LAB 5 TREE ID (SIMPLIFIED DICHOTOMOUS KEY )
Studied by 0 people
Call with Kai
Knowt Play
Learn
Practice Test
Spaced Repetition
Match
Flashcards1/54
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
55 Terms
Ginkgo biloba - Maidenhair tree
1. gymnosperms
----------------
2. leaves large, 2-3 inches, fan-shaped
- lobed or not,
- venation parallel with som branching
Cupressus sempervirens - Italian Cypress
1. gymnosperm
----------------
2'. Leave not large and fan-shaped, often needles or scales
----------------
3. leaves opposite, in decussate pairs, often needles or scales
----------------
4. tree growth form narrow and columnar; cones egg-shaped with flat-topped scales
Platycladus orientalis - Chinese arborvitae
1. gymnosperm
----------------
2'. Leave not large and fan-shaped, often needles or scales
----------------
3. leaves opposite, in decussate pairs, often needles or scales
----------------
4'. tree growth broader, cones small and spiky or elongated with narrow scales
----------------
5. Flattened branches held vertically, looking like vertical plates; cones spiky
Calocedrus decurrens - incense cedar
1. gymnosperm
----------------
2'. Leave not large and fan-shaped, often needles or scales
----------------
3. leaves opposite, in decussate pairs, often needles or scales
----------------
4'. tree growth broader, cones small and spiky or elongated with narrow scales
----------------
5'. Yellow-green foliage, leaves ¼ - ½ inch long, internodes
elongated; cones narrow and elongated
Pinus pinea - Italian Stone Pine
1. gymnosperm
----------------
2'. Leave not large and fan-shaped, often needles or scales
----------------
3'. Leaves alternate or appearing spirally arranged, not in clear
decussate pairs, needle-like or flattened, easy to see
----------------
6. Tree with obvious needle-like leaves, bark smooth or scaly, but not fibrous
----------------
7. Needles falling in clusters of two, twisted; cones large and
woody
Cedrus atlantica, atlas cedar
1. gymnosperm
----------------
2'. Leave not large and fan-shaped, often needles or scales
----------------
3'. Leaves alternate or appearing spirally arranged, not in clear
decussate pairs, needle-like or flattened, easy to see
----------------
6. Tree with obvious needle-like leaves, bark smooth or scaly, but not fibrous
----------------
7'. Needles attached to stem singly, often attached in spiral groups
to stubby spur shoots; large woody cones absent (disintegrate)
----------------
8. Needles 1 inch long or shorter, foliage blue-green to silvery
blue
Cedrus deodara - Deodar Cedar
1. gymnosperm
----------------
2'. Leave not large and fan-shaped, often needles or scales
----------------
3'. Leaves alternate or appearing spirally arranged, not in clear
decussate pairs, needle-like or flattened, easy to see
----------------
6. Tree with obvious needle-like leaves, bark smooth or scaly, but not fibrous
----------------
7'. Needles attached to stem singly, often attached in spiral groups
to stubby spur shoots; large woody cones absent (disintegrate)
----------------
8'. Needles 1-2 inches long, foliage dark-green to blue-green, branch tips and central stem tip drooping
Sequoia sempervirens - Coast redwood
1. gymnosperm
----------------
2'. Leave not large and fan-shaped, often needles or scales
----------------
3'. Leaves alternate or appearing spirally arranged, not in clear
decussate pairs, needle-like or flattened, easy to see
----------------
6'. Tree with flattened narrow leaves or awl-like (short and sharply
pointed), bark furrowed with large rounded ridges, fibrous
----------------
9. Leaves ½-1 inch long, linear, two-ranked and flattened, leaf
underside with two distinct bands, foliage yellow-green to
green
Sequoiadendron giganteum - Giant sequoia
1. gymnosperm
----------------
2'. Leave not large and fan-shaped, often needles or scales
----------------
3'. Leaves alternate or appearing spirally arranged, not in clear
decussate pairs, needle-like or flattened, easy to see
----------------
6'. Tree with flattened narrow leaves or awl-like (short and sharply
pointed), bark furrowed with large rounded ridges, fibrous
----------------
9'. Leaves much smaller and pointed, awl-like (some scale-like),
foliage bluish-green
Washingtonia filifera - California Fan Palm
1'. Angiosperms
----------------
10. Leaves compound
----------------
11. Leaves palmately compound
----------------
12. Monocot tree with unbranched trunk, fibrous roots
Aesculus x carnea - Red Horsechestnut
1'. Angiosperms
----------------
10. Leaves compound
----------------
11. Leaves palmately compound
----------------
12'. Eudicot tree with branched trunk, leaves opposite, usually with 5
leaflets, each 4-6 inches long
Lyonothamnus floribundus - Catalina Ironwood
1'. Angiosperms
----------------
10. Leaves compound
----------------
11'. Leaves pinnately compound
----------------
13. Leaves twice-pinnately compound
----------------
14. Leaves opposite
Albizia julibrissin - silk tree
1'. Angiosperms
----------------
10. Leaves compound
----------------
11'. Leaves pinnately compound
----------------
13. Leaves twice-pinnately compound
----------------
14'. leaves alternate
----------------
15. Leaf feathery or fern-like
----------------
16. Leaf large, 10-20 inches long, each leaflet narrow and small, approximately 3/8 inch long
Grevillea robusta - Silk Oak
1'. Angiosperms
----------------
10. Leaves compound
----------------
11'. Leaves pinnately compound
----------------
13. Leaves twice-pinnately compound
----------------
14'. leaves alternate
----------------
15. Leaf feathery or fern-like
----------------
16'. Leaves smaller, 6-12 inches long, with greyish white or rusty undersides, primary leaflets often not completely divided into secondary leaflets
Gymnocladus dioicus - Kentucky Coffeetree
1'. Angiosperms
----------------
10. Leaves compound
----------------
11'. Leaves pinnately compound
----------------
13. Leaves twice-pinnately compound
----------------
14'. leaves alternate
----------------
15'. Leaf not feathery or fern-like, very large, 1-3 feet long, with numerous 1 1/2 to 2 inch long ovate leaflets
Fraxinus velutina - Modesto Ash
1’. Angiosperms
----------------
10. Leaves compound
----------------
11’. Leaves pinnately compound
----------------
13’. Leaves once-pinnately compound
----------------
17. Leaves opposite
Robinia pseudoacacia - Black Locust
1'. Angiosperms
----------------
10. Leaves compound
----------------
11'. Leaves pinnately compound
----------------
13'. Leaves once-pinnately compound
----------------
17'. Leaves alternate
----------------
18. Many nodes bearing stipular spines (in pairs)
Ceratonia siliqua - Carob
1’. Angiosperms
----------------
10. Leaves compound
----------------
11’. Leaves pinnately compound
----------------
13’. Leaves once-pinnately compound
----------------
17’. Leaves alternate
----------------
18’. Nodes lacking spines
----------------
19. Leaves generally less than 9 inches long
----------------
20. Leaflets generally 11 or less, pulvini present at leaflet bases, leaflet margins wavy; legume pods sometimes
present
Gleditsia triacanthos - Honey Locust
1’. Angiosperms
----------------
10. Leaves compound
----------------
11’. Leaves pinnately compound
----------------
13’. Leaves once-pinnately compound
----------------
17’. Leaves alternate
----------------
18’. Nodes lacking spines
----------------
19. Leaves generally less than 9 inches long
----------------
20’. Leaflets generally 15-30, or sometimes leaflets are further compound with 4-7 minor leaflets
Schinus molle - California Pepper Tree
1'. Angiosperms
----------------
10. Leaves compound
----------------
11'. Leaves pinnately compound
----------------
13'. Leaves once-pinnately compound
----------------
17'. Leaves alternate
----------------
18'. Nodes lacking spines
----------------
19'. Leaves generally more than 9 inches long
----------------
21. Leaflets > 17, leaf drooping, often curved, leaflets narrowly lance-shaped
Pistacia chinensis - Chinese Pistache
1’. Angiosperms
----------------
10. Leaves compound
----------------
11’. Leaves pinnately compound
----------------
13’. Leaves once-pinnately compound
----------------
17’. Leaves alternate
----------------
18’. Nodes lacking spines
----------------
19’. Leaves generally more than 9 inches long
----------------
21’. Leaflet < 17, not drooping noticeably
----------------
22. Leaflets with entire margins, lanceolate to narrow
ovate, with tapering pointed tips
Koelreuteria paniculata - Goldenrain Tree
1'. Angiosperms
----------------
10. Leaves compound
----------------
11'. Leaves pinnately compound
----------------
13'. Leaves once-pinnately compound
----------------
17'. Leaves alternate
----------------
18'. Nodes lacking spines
----------------
19'. Leaves generally more than 9 inches long
----------------
21'. Leaflet < 17, not drooping noticeably
----------------
22'. Leaflets with irregular serrations or lobes on leaflets, some leaves may be partially bipinnate; papery triangular fruits are often seen hanging in clusters
Acer saccharinum - Silver Maple
1'. Angiosperms
----------------
10'. Leaves simple
----------------
23. Leaves opposite or appearing opposite but actually alternate (sub-
opposite)
----------------
24. Leaves lobed
----------------
25. Lower leaf surface white or white-green
Acer palmatum - Japanese Maple
1'. Angiosperms
----------------
10'. Leaves simple
----------------
23. Leaves opposite or appearing opposite but actually alternate (sub-
opposite)
----------------
24. Leaves lobed
----------------
25'. Lower leaf surface green
----------------
26. Leaf lobes 5-7, very deeply lobed
Acer circinatum - Vine Maple
1'. Angiosperms
----------------
10'. Leaves simple
----------------
23. Leaves opposite or appearing opposite but actually alternate (sub-
opposite)
----------------
24. Leaves lobed
----------------
25'. Lower leaf surface green
----------------
26'. Leaf lobes 7-9, not deeply lobed
Lagerstroemia indica - Crape Myrtle
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23. Leaves opposite or appearing opposite but actually alternate (sub-
opposite)
----------------
24’. Leaves not lobed, margins entire
----------------
27. Leaves clearly sub-opposite
Ligustrum lucidum - Glossy Privet
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23. Leaves opposite or appearing opposite but actually alternate (sub-
opposite)
----------------
24’. Leaves not lobed, margins entire
----------------
27’. Leaves opposite, not sub-opposite
----------------
28. Leaf margin lacking hairs; leaf folded upward like a V from the midvein; flowers small, white, with 2 stamens; fruit black,
in clusters
Viburnum tinus, Laurustinus
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23. Leaves opposite or appearing opposite but actually alternate (sub-
opposite)
----------------
24’. Leaves not lobed, margins entire
----------------
27’. Leaves opposite, not sub-opposite
----------------
28'. Leaf margin hairy; bark not very smooth; fruits are metallic
blue berries in compact, flat-topped clusters
Morus alba - White Mulberry
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29. Leaves lobed, or a mixture of lobed and unlobed
----------------
30. Some leaves lobed, others not, can be up to 5 lobes, margins coarse serrate, venation at blade base palmate, pinnate distally, blade can exceed 12 inches; lateral buds teardrop-shaped
Liquidambar styraciflua - Sweet Gum
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29. Leaves lobed, or a mixture of lobed and unlobed
----------------
30’. Leaves all lobed
----------------
31. Leaves palmately lobed
----------------
32. Leaves with 5-7 lobes, looking like stars, finely serrate margin, shiny green above
Platanus x acerifolia - London Plane
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29. Leaves lobed, or a mixture of lobed and unlobed
----------------
30’. Leaves all lobed
----------------
31. Leaves palmately lobed
----------------
32’. Leaves with 3-5 lobes, coarsely toothed, medium green above, pale below, petiole base covers over the axillary bud
Crataegus laevigata - English Hawthorn
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29. Leaves lobed, or a mixture of lobed and unlobed
----------------
30’. Leaves all lobed
----------------
31’. Leaves pinnately lobed
----------------
33. Stipules kidney-shaped (check youngest shoots); small thorns sometimes present; fruit a red fleshy
pome
Quercus shumardii, Shumard Oak
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29. Leaves lobed, or a mixture of lobed and unlobed
----------------
30’. Leaves all lobed
----------------
31’. Leaves pinnately lobed
----------------
33’. Stipules absent; thorns absent; fruit an acorn
----------------
34. Main veins in leaf extend past blade as fine bristles
Quercus macrocarpa, Burr Oak
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29. Leaves lobed, or a mixture of lobed and unlobed
----------------
30’. Leaves all lobed
----------------
31’. Leaves pinnately lobed
----------------
33’. Stipules absent; thorns absent; fruit an acorn
----------------
34’. Main veins do not extend as bristles
----------------
35. Leaf base cuneate/attenuate, leaves up to 6 inches long, leaf undersurface markedly lighter in color than top
surface.
Quercus lobata - Valley Oak
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29. Leaves lobed, or a mixture of lobed and unlobed
----------------
30’. Leaves all lobed
----------------
31’. Leaves pinnately lobed
----------------
33’. Stipules absent; thorns absent; fruit an acorn
----------------
34’. Main veins do not extend as bristles
----------------
35’ Leaf base obtuse/truncate, leaves up to 4 inches long, leaf undersurface slightly lighter in color than top surface
Tilia americana - American Linden
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36. Leaf base asymmetrical (one side different in shape/size compared to the other side)
----------------
37. Persistent strap-shaped bracts present; leaves broadly
ovate, longer than 5 inches
----------------
38. Youngest stems (at shoot tip) lime-green in color; leaves
large, up to about 10 inches
Tilia chordata - Little-leaf Linden
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36. Leaf base asymmetrical (one side different in shape/size compared to the other side)
----------------
37. Persistent strap-shaped bracts present; leaves broadly
ovate, longer than 5 inches
----------------
38'. Youngest stems (at shoot tip) brown in color; leaves
medium, up to about 6 inches
Celtis occidentalis - Common Hackberry
1'. Angiosperms
----------------
10'. Leaves simple
----------------
23'. Leaves alternate
----------------
29'. Leaves not lobed
----------------
36. Leaf base asymmetrical (one side different in shape/size compared to the other side)
----------------
37'. Strap-shaped bracts absent; leaves narrowly ovate -
elliptical, shorter than 5 inches
----------------
39. Fruit a spherical berry borne on a stalk; leaf venation palmate at base, pinnate distally, lateral veins connected by perpendicular smaller veins
Ulmus parvifolia - Chinese Elm
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36. Leaf base asymmetrical (one side different in shape/size compared to the other side)
----------------
37’. Strap-shaped bracts absent; leaves narrowly ovate - elliptical, shorter than 5 inches
----------------
39’. Fruit a flat, papery disc or a rounded small drupe that is sessile (no stalk), dangling below and among the leaves;
leaf venation pinnate throughout
----------------
40. Fruits flat and papery, hanging in close clusters of about 12; some of the lateral leaf veins forked
Zelkova serrata - Zelkova
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36. Leaf base asymmetrical (one side different in shape/size compared to the other side)
----------------
37’. Strap-shaped bracts absent; leaves narrowly ovate - elliptical, shorter than 5 inches
----------------
39’. Fruit a flat, papery disc or a rounded small drupe that is sessile (no stalk), dangling below and among the leaves;
leaf venation pinnate throughout
----------------
40'. Fruits rounded and inconspicuous, hanging singly beneath the leaves; lateral leaf veins unforked or rarely
forked, ending in the leaf serrations
Eriobotrya japonica - Loquat
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41. Leaves large, generally at least 9 inches long
----------------
42. Lower leaf surface felt-like, felt easily rubbed off
Eriobotrya deflexa, Bronze Loquat
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41. Leaves large, generally at least 9 inches long
----------------
42’. Lower leaf surface smooth and without felt, leaves markedly serrate
Cercis canadensis - Eastern Redbud
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43. Leaf margins entire
----------------
44. Leaf ranking distichous (2-ranked)
----------------
45. Leaf venation palmate with 7 main veins branching from blade base, leaves broadly ovate, leaf base chordate, pulvini at petiole base; dry legume pods
hanging from shoots
Eucalyptus sideroxylon - Red Iron Bark
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43. Leaf margins entire
----------------
44. Leaf ranking distichous (2-ranked)
----------------
45’. Leaf venation pinnate
----------------
46. Leaves linear-lanceolate, narrow, and sickle- shaped, highly aromatic if crushed
Cotoneaster lacteus - Parney’s Cotoneaster
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43. Leaf margins entire
----------------
44. Leaf ranking distichous (2-ranked)
----------------
45’. Leaf venation pinnate
----------------
46’. Leaves not linear-lanceolate and sickle-shaped, not aromatic when crushed, but could smell of burnt
almonds
----------------
47. Leaf undersurface markedly lighter in color than top surface, leaves up to about 2 ½ inches long, leaves obovate
Prunus laurocerasus - English Laurel
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43. Leaf margins entire
----------------
44. Leaf ranking distichous (2-ranked)
----------------
45’. Leaf venation pinnate
----------------
46’. Leaves not linear-lanceolate and sickle-shaped, not aromatic when crushed, but could smell of burnt
almonds
----------------
47’. Leaf undersurface slightly lighter in color than top surface, leaves up to about 4 inches long, leaves elliptical-oblanceolate
Callistemon viminalis - Weeping Bottlebrush
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43. Leaf margins entire
----------------
44’. Leaf ranking spiral; leaves strongly aromatic when crushed
----------------
48. Leaves narrow oblanceolate, stiff, margins not wavy; sessile flowers spirally arranged on stem, last year’s fruits leaving a bare interval on shoot.
Cinnamomum camphora - Camphor Tree
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43. Leaf margins entire
----------------
44’. Leaf ranking spiral; leaves strongly aromatic when crushed
----------------
48’. Leaves ovate, not stiff, margins wavy, venation on leaf top surface appears palmate, but point of vein branching is distal to blade base; youngest stems green fruit a small berry attached to a swollen stalk
Betula pendula - European White Birch
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43’. Leaf margins serrate or bearing thin bristles
----------------
49. Leaf ranking distichous (2-ranked)
----------------
50. Catkins present, generally both male and female; leaf base generally strongly truncate
Prunus cerasifera - Purple-leaf Plum
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43’. Leaf margins serrate or bearing thin bristles
----------------
49. Leaf ranking distichous (2-ranked)
----------------
50’. Catkins absent; leaf base not truncate, leaves
purple in color
Quercus agrifolia - Coast Live Oak
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43’. Leaf margins serrate or bearing thin bristles
----------------
49’. Leaf ranking spiral
----------------
51. Leaves with thin bristles on leaf margin, appearing as serrations (bristles are extensions of leaf veins); fruit an acorn
----------------
52. Leaves not flat, markedly cupped downward, leaf undersurface largely resembles top surface however the
undersurface bears tufts of hair in the angles between the midvein and the lateral veins; bark not noticeable
thick and spongy
Quercus suber, Cork Oak
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43’. Leaf margins serrate or bearing thin bristles
----------------
49’. Leaf ranking spiral
----------------
51. Leaves with thin bristles on leaf margin, appearing as serrations (bristles are extensions of leaf veins); fruit an acorn
----------------
52’. Leaves mostly flat, margins maybe turned downward slightly, leaf undersurface whitish in color; bark
extremely thick and spongy
Pyrus calleryana - Bradford Pear
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43’. Leaf margins serrate or bearing thin bristles
----------------
49’. Leaf ranking spiral
----------------
51’. Leaves lacking marginal bristles
----------------
53. Stipules present on youngest shoots
----------------
54. Stipules long and linear, leaf broadly ovate; each bud scale with a single black bristle, which readily falls off; fruit fleshy and spherical
Salix matsudana - Corkscrew Willow
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43’. Leaf margins serrate or bearing thin bristles
----------------
49’. Leaf ranking spiral
----------------
51’. Leaves lacking marginal bristles
----------------
53. Stipules present on youngest shoots
----------------
54’. Stipules auriculate (earlobe-shaped) with long twisted tips, leaf linear, cupped upward, contorted
Arbutus unedo - Strawberry Tree
1’. Angiosperms
----------------
10’. Leaves simple
----------------
23’. Leaves alternate
----------------
29’. Leaves not lobed
----------------
36’. Leaf base symmetrical
----------------
41’. Leaves not large, generally less than 9 inches long
----------------
43’. Leaf margins serrate or bearing thin bristles
----------------
49’. Leaf ranking spiral
----------------
51’. Leaves lacking marginal bristles
----------------
53’. Stipules absent
----------------
55. Leaf margin serrate, leaves elliptic-
oblanceolate; inflorescence (flower cluster) large and terminal, with many small bracts
Note 
Flashcards (128)