Tree Taxonomy 108A Flash Cards ID Exam 1 Angiosperm

UC Berkeley Tree Taxonomy Angiosperm ID Exam FA2026

palmately lobed leaves, 3-5 pointed lobes, center lobe wider than long, sticky buds

Platanus racemosa - Western Sycamore

palmately lobed, 5 lobes, longer than wide, pronounced lobes

Platanus x acerifolia - London plane

compound leaf, 3 to 7 leaflets, thick, serrated margins, round to tapered

Fraxinus dipetala - California Ash/Foothill Ash

compound leaf, 5-9 leaflets, ovate w triangle tip, light green

Fraxinus latifolia - Oregon Ash

pinnately compound, 5-7 leaflets with entire or scalloped margins, acute tip

Fraxinus velutina - Velvet Ash

opposite gray-green leaves with silver underside, oval/lance

Olea europaea- Olive

opposite, palmately compound, 5 (sometimes 7) leaflets, dark green and paler, distinct ribs, green buds

Aesculus californica- California Buckeye

palmately compound, 5-7 leaflets, paddle shape (teardrop shaped, acute tip), mahogany red bud that is sticky

Aesculus hippocastanum - Horse Chestnut

opposite palmate lobed, 5 distinct lobes, huge leaf, large coarse teeth

Acer macrophyllum - big leaf maple

opposite palmate lobe, 5-9 shallow lobes, bright green, serrated edges, T shaped samara (seed)

Acer circcinatum - Vine Maple

pinnately compound leaves, 3-7 leafelets, highly variable in shape, coarse tooth margins

Acer negundo- Box Elder

opposite palmate, 3-5 lobes, serrated margins, 2-4 inches

Acer rubrum - red maple

palmate, 5 lobes, deep notched rounder tipped lobes, dull green

Acer saccharum- sugar maple

palmate, 5 deep lobes, angular notches, green upper surface and silvery white underside

Acer saccharinum- silver maple

broad egg shape, finely scalloped

Populus tremuloides- quaking aspen

heart shaped, alternate, simple, coarsely scalloped margins

Populus fremontii - Fremont cottonwood

lance, fine tooth margins, single bud scale

Salix lucida var lasiandra

elliptical, fine tooth/entire margins, glossy green with fine hair, single bud scale

Salix hookeriana

lance shape, finely scalloped margin, pale green and glossy, single bud scale

Salix laevigata- red willow

alternate arrange, ovulate tapered at beginning, single bud scale, fglossy green, rounded end

Salix scouleriana- Scouler’s willow

triangular tip, lance body, some more rounded, smooth edge or toothed with edges rolled under

Salix sitchensis- Sitka willow

alternate, small leaf, ovate to rhombic, double serrated margins, preformed aments and singular strobli

Betula occidentalis- Water birch

alternate arrange, egg shaped with pointed acute tip, double serrated margin, preformed aments with singular strobli (strobli break easy)

Betula alleghaniensis- yellow birch

clustered woody male aments, finely single serrated margins, ovulate, thin hairs, not rolled under

Alnus rhombifolia- White alder

clustered woody male aments, ovate shape, bluntly serrated edges that curl under, large leaf

Alnus rubra- Red alder

clustered woody male aments, double serrated margins, dark green and hairless, leaves do not roll downwards

Alnus incana spp. tenuifolia- mountain alder

soft hairy broad leaf with irregularly double-toothed margins

Corylus cornuta- beaked hazelnut

opposite, simple, oval, large curving veins on underside, hairy on top, stretchy veins when torn apart

Cornus nuttallii- Pacific dogwood

ovate/oblong, thick curved veins, circular top, bright green w red stems

Cornus sericea- Red Osier Dogwood

alternate leaf, ovate/pointed ends, mahogany wood

Arctostaphylos patula- Greenleaf manzanita

alternate arrangement, dark green, simple sparsely toothed with small teeth that terminate each vein

Fagus grandifolia- American beech

sparsely to densely pubescent surface, spiny tooth margin, broadly oval, armpit hairs

Quercus agrifolia- Coast live oak

spiny, deep lobes, larger leaf

Quercus kelloggii- California Black oak

mainly spiny toothed, dull dark green leaves

Quercus wislizeni- interior live oak

ovate leaves, full margins, circular tips, dull bullish top and bright green bottom

Quercus engelmannii- Engelmann oak

DEEP lobes, slighly serrated margins, rounded, matte green, velvetty hair

Quercus lobata- Valley Oak

5-7 shallow lobes, oblong to egg shaped, wider above middle , dull bluish green tops

Quercus douglasii- Blue oak

5-9 lobes, small leaf, deep lobe, thick leaf, entire to coarsely toothed dark green and shiny

Quercus garryana- Oregon white oak

shiny, oblong/elliptical leaves, spiny teeth or smooth margins, glossy dark green surface and dull bottom

Quercus chrysolepis- Canyon live oak

oblong to elliptical, margins entire sometimes spiny, leaf tips round and pointed

Quercus vaccinifolia- Huckleberry oak

toothed margins, hard leathery texture, underside dense orange hairs, very prominent veins on upper surface

Notholithocarpus (Lithocarpus) densiflorus- tanoak

spiky balls, palmately lobed, 5 triangular lobes, 3 distinct bundle scars, alternate arrangement

Liquidamber styraciflua- American Sweetgum

simple, ovate, large leaves with smooth margins, stiff leathery and scruffy underneath

Magnolia grandiflora- Southern magnolia

alternate leaves, pinnately veined, 4 lobes and heart shaped or slightly wedge shaped, somewhat square

Liriodendron tulipifera- American tuliptree

alternate, double serrate margins, oblique base, 3-8 inches long

Ulmus americana- American elm

small, corky ridges on branchlets, oblique base, double serrate margins 2-5 inches

Ulmus minor- Field elm

ellipitcal, pointed tips, single toothed margins, fishbone pattern, 1-2 inches

Ulmus parvifolia- Chinese elm

lance/elliptical, triangular end with rounded tip, distinct smell

Umbellularia californica- California Bay

thick waxy texture, elliptical, spiral arangement, dark glossy green above and lighter green beneath with entire margin

Arbutus menziesii- Pacific Madrone

leathery, round, entire margins, heart/cordate shaped,

Cercis occidentalis- Western redbud

pinnate compound, 9-19 leaflets, rounded egg shape, paired spines at bases

Robinia pseudoacacia- Black locust

pinately compound, two leaflet forms, 7-17 pairs of leaflets

Prosopis (neltuma) glandulosa- Honey mesquite

heart shaped, finely serrate, asymmetrical base

Tilia americana- basswood

pinnately compound, 11-19 lance leaflets with toothed margins and no hair, three pronged attachment at stem base

Juglans californica- Southern California walnut

3 distinct veins, gray stems, alternate arranged 1 inch long leaf, dark green, thorns where branches end

Ceanothus cordulatus- Mountain whitethorn

3 distinct veins, flat leaves ovate to lance, glossy, thin, entire or sligtly dentate margins, light green and hairy, bright green stems

Ceanothus integerrimus- deerbrush ceanothus

3 veined, oval shape, full margins, large leaf (2 inch), white stems, bright green leaf

Ceanothus incanus- Coast whitethorn

3 veined, shiny ovate, ~1.5 inches, wavy/serrated margins, tough thick leaves, evergreen

Ceanothus thrysiflorus- blue blossom

oval, minute glandular teeth, large waxy and hairless, 3 inch leaf, smells good

Ceanothus velutinus- tobacco brush

oval, broad, wavy tooth or shallowly lobed margins

Hamamelis virginiana- American Witch Hazel

wavy leaf, full margins, 4-7 lobes, big leaf

Quercus alba - white oak

spiky lobes, oblong-ovate, 5-10 inches long, 7-10 lobes, wide deep glossy green

Quercus rubra- red oak