Glossary
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Vein
The vascular bundles or veins or ribs of the blades, glumes, lemmas, and paleas.

Velvety
A vestiture of thick medium length hairs.

Vernal
Growth form for spring and early summer.

Verrucose
Covered with warty protuberances.

Verticil
A whorl of parts arising from a common point or around an axis.

Verticillate
Having branches or flowers arranged in whorls at two or more levels of an inflorescence.

Vestigial
Not fully developed; rudimentary.

Verification
Matching unknown but keyed specimen with known material in the herbaium.

Vestiture
Surface coverings (e.g., hairs, or wax, or scales).

Villous
Long, soft, unmatted hairs; shaggy.

Viscid
Sticky, glutinous.

Voucher specimen
An herbarium specimen that documents the morphology and identification for chromosome, ecological & anatomical studies, plant breeding (parents and progeny), and taxonomy.