valvate (1 image): opening by valves; arranged with the margins of the petals, sepals, or bud scales adjacent throughout their length, without overlapping.

valve: one of the portions of the ovary wall into which a capsule separates at maturity; in anthers opening by pores, the portion of the anther wall covering the pore.

vascular: pertaining to conduction. vascular plants are those that have xylem and phloem; a vascular bundle is a strand of xylem and phloem and associated tissues.

vein: a vascular bundle, especially if externally visible, as in a leaf.

velum: a thin membrane partially covering the cluster of sporangia near the leaf base in isoetes.

velutinous (1 image): velvety.

venation (1 image): the mode of veining.

ventral: pertaining to or located on the front or belly side.

ventricose: inflated or swelling out on 1 side only, or unequally, as the corolla of many species of penstemon.

vernation: the arrangement of leaves in the bud.

verrucose: warty.

versatile anther (2 images): one attached near the middle and therefore capable of swinging freely on the filament.

verticil (6 images): a whorl of leaves or flowers.

verticillaster (3 images): a false whorl.

verticillate (3 images): arranged in verticils.

vespertine: pertaining to or opening or functional in the evening.

vestigial: much reduced and hardly or not at all functional.

vestiture (3 images): general term referring to the hairs covering parts of a plant.

villose: same as villous.

villosulous: diminutive of villous.

villous (2 images): pubescent with long, soft, often bent or curved but not matted hairs.

virgate: wand-like; slender, straight, and erect.

viscid: sticky or greasy.

viscidulous: diminutive of viscid.