3S8 



GLOSSARY. 



vitSl'line, pe7-iaining to the yolk of the egg ; 



vTt'ta (pi. vit'tse), one of the oil tubes in the 

 fruit of umbelliferous plants. 



vi vip'ar ous, sprouting or ger?ninating while 

 attached to the parent plant. 



vol'uble, having the poiver or habit of turn- 

 ing or twining. 



vo lute', rolled up in any direction. 



Tol'va, a sac-like envelope of certain fungi, 

 which bursts open as the plant develops, 



w. 



wav'y, undulating on the border or surface. 



wax'y, resembling ivax in texture or appear - 

 ance. 



wedge '-shaped, broad and truncate at the 

 summit, and tapering down to the base. 



wheel-shaped, expanding into aflat, circular 

 border at top, with scarcely any tube, as a 

 wheel-shaped corolla. 



whSrl, a circle of tivo or more leaves, flow- 

 ers, or other organs, about the same part 

 or joint of a stem. 



wh6rled, arranged in whorls. 



wing, any membraneous expansion ; either 

 of the ttvo side jjefals of a papilionaceous 

 floiver. 



■winged, fur 7iished icith a leaf-like append- 

 age, as the fruit of the Ash and Elm. 



witch grass, a troublesome weed, with creep- 

 ing underground stems, 



wood, the hard or solid part of a stem or 

 branch. 



wood cell, a slender cylindrical or pris- 

 matic cell, usually tapering to a point at 

 both ends, and the principal constituent 

 of woody fiber. 



wood'y plant, a shrub, tree, or plant in 

 which the stems and branches are woody. 



wool'ly, clothed with long and entangled 

 soft hairs. 



xan'thic, yellowish. 



xe nog'a my, cross-fertilization ; fertiliza- 

 tion of a flower by pollen from a flower 

 of another plant of the same species. 



xe'rophil, a plant that requires great heat and 

 little moisture, and is specially adapted to 

 arid regions. 



xy'lem, that portion of a fibro-vascidar bun- 

 dle developed into wood cells. 



xy'lo carp, a hard and woody fruit. 



Y. 



yeast plant, a unicellular plant which is the 

 active agent of fermentation ; it has the 

 power of disintegrating starch and setting 

 carbon dioxide free. 



Z. 



zo'o phyte, any one of the numerous species 

 of itivertebrate animals which more or 

 less resemble plants in appearance or 

 mode of growth. 



zo'o spore, a spore provided ivith one or 

 more slender cilia, by the vibration of 

 which it swims in the water. 



zyg'o spore, a spore formed by the union of 

 two or more cells. 



