Bio 342 - Exam 3 Vegetative & Floral terms

branched trichome

extrafloral nectary

Specialized glands found on parts other than the flower

latex

Milky sap or juice excretion that dries into a stretchy solid

mucilage

A gelatinous plant excretion that dries into a glue-like solid

prickle

Small, sharp outgrowth, scattered in internode region

resin

A highly viscous plant excretion

sessile

Attached directly to the stem without a petiole or stalk

spine

A modified leaf or stipule found beneath a bud or branch, occurs as a paired structure

stellate trichome

thorn

A long, hard, woody modified branch, often begins growing as a normal stem

tri-nerved

A leaf with three prominent veins extending from base

banner

Large uppermost petal at the top of a papilionaceous flower

wings

Two large side petals of a papilionaceous flower

keel

Two fused boat-shaped petals of a papilionaceous flower, encloses floral parts

epicalyx

Ring of bracts under the true calyx

heterostyly

Style and stamen heights differ between members of the same species

involucre

A ring of bracts surrounding receptacle of flower

cyathium

A cuplike involucre with staminate flowers surrounding one pistillate flower