Tree Identification and Botany Vocabulary

Flashcards based on lecture notes detailing tree anatomy, leaf morphology, and related terminology.

Valvate bud

Opens town the middle

Imbricate bud

Scaled and unfolds when growth occurs

Terminal bud

Bud at the apex of a twig

Lateral bud

Buds coming off the side of a twig from nodes

Node

Place growth can occur coming from stick, commonly has a bud nestled in/near it

Leaf scar

Indent or “scar” left by the removal of a leaves petiole from a twig

Alternate arrangement

Leaves are arranged on different sides of the twig

Opposite arrangement

Leaves are parallel coming out of the twig

Simple leaves

One leaf connected to a petiole, “standard” leaf

Compound leaves

Multiple leaflets coming from one stem/axis, connected to twig by petiole found at the bottom of this stem

Entire margin

Flat smooth line with no interruptions on the edge of a leaf

Serrate margin

Uneven/disrupted edges, more like a sawblade

Lanced shape

Longer than wide

Ovate

Asymmetrical from tip to bottom, wider at base

Obovate

Wider at the top, inverse of ovate

Lobe

Protruding part of a leaf, commonly rounded with “sinuses” being the lower part of the dip

Pubescent

Has hairs

Lenticals

Small dots which are used for respiration

Shade tolerance

The ability to thrive with a lack of light

Form

Overall shape of a tree (ex: shrub, vertical)

Canoeing

Canoe shaped ridges formed in the bark

EAB

Emerald ash bore, an invasive beetle devastating ashes across the united states including minnesota