vs. Hairy: Smooth, hairless surfaces are glabrous.
"Hairy surfaces (not true hairs) bear epidermal trichomes
of varying lengths and appearance:
Pubescent = short, soft hairs
= hard, short, rigid hairs (sandpapery)
= dense, short, rigid hairs
= densely tomentose
= bristly hairs
= close-pressed, soft and straight hairs
= sticky glands on the hair tips, or stalked glands (stipitate-glandular)
= long, tortuous or matted hairs
= stiff, strong trichomes
coverings are scale-like or bran-like panicles or glands, sometimes
mixed with close, loosely attached trichomes.
surface is bumpy or irregular due to scurfy scales.
glands are flattened, bran-like scales which look like small
fringed dots (use lens).
surface shows a white scurfy substance.
surfaces are folded, channeled, or deeply lined.
surfaces are wrinkled.
surfaces have a whitened or pale color, sometimes caused by a powdery
or waxy bloom. When blooms are present,
these pale waxy coverings rub off easily with handling, as in blueberry
fruit or raspberry canes.
surfaces show minute dots. These dots may be pale or darkened glands
or depressions on the epidermis.
dots and resin globules
are usually lustrous specks, best visible at an angle to light.
plant parts include green leaf-like growth along small stems such
as petioles or rachi, corky growth of bark cells on twigs or branchlets,
or membrane-like attachments to seed or fruit.
properties are found in fresh sap fluids and are best ascertained
from scraping or bruising of tissues. Identification of potentially
poisonous plants is recommended before experimentation in this area.
properties of sap and fruit juices cause "puckering" sensations
of the mouth.