American Hosta Society Glossary of Terms
compiled by C.H.Falstad,III
and published in
The Hosta Journal Vol. 29, No. 1, page 25
reproduced here with the express permission of the editor of
The Hosta Journal.

stable
(in Hosta) a plant that maintains its solid or variegated pattern when propagated by division.

stamen
the male parts of the flower consisting of the filament and the anther, usually six per flower.

stigma
the receptive female tip of the flower at the end of the style.

stoloniferous
(in Hosta see rhizomatous.)

streaked
(see splashed.)

style
the long tube connecting the stigma with the ovary.

substance
the amount of thickness between the veins, to the touch, of a fully expanded leaf blade.

tepal
the combination of petal and sepal; the shovry part of a flower that has no sepals.

texture
the characteristic of the leave surface to the eye.

twisted
a leaf rotated around itself producing an askew condition.

undulated
a coarse wave to the leaf blade; i.e., H. 'Undulata'.

unfurled
the stage of leaf development when the blade is open and separated from the petiole; usually when leaf blade completely untangled from itself

variegated
leaf having more than one color due to a difference in pigment components as margined, medio-variegated, splashed, misted or mottled.

vein pairs
the matched set of veins on opposite sides of the center midrib.

veins
the prominent lines of connective tissue for carrying water and nutrients.

viridescent
having leaves which begin the season lighter colored and become more green as the season advances.

wavy
(see undulated.)

white-backed
having a glaucous underside; i.e., H. hypoleuca.