volvoclnaceous 



Winter-annual 



sac enclosing the sporophore of 

 Agarics, ruptured at its apex by 

 the growth of the unfolding pileus. 



volvocina'ceous, of the nature of the 

 genus Volvox. 



Vul'va [from Volva} Vegetabil'ium, a 

 Linnean name for the STIGMA ; 

 vul'viform (forma, shape), like a 

 cleft with projecting edges. 



Wart, a hard or firm excrescence ; 

 wart'y, covered with warts or 

 verrucae. 



Wa'ter Cul'ture, growth of plants in 

 compound solutions of salts ; ~ 

 Gland, a group of cells beneath a 

 water-pore, which help to excrete 

 water ; <~ Leaf, in Salvinia, a 

 submersed and finely divided leaf, 

 which simulates a root ; <~ 

 Par'asite, when the host serves 

 only as a root, and provides 

 absorption, conduction and me- 

 chanical support, as in Mistleto, 

 whose havistoria contain no sieve- 

 tubes ; <- Plants, those growing 

 in water, immersed wholly or in 

 part ; ~ Pore, <- Stom'a, a stoma 

 devoid of guard-cells, discharging 

 water ; ~ Stor'ing-tis'sue, a form 

 of water-tissue adapted for storing 

 water, especially in dry climates ; 

 <~ Tis'sue, parenchyma filled with 

 clear sap and some mucilage. 



waved, wa'vy, undulate or sinuate. 



Wax, veg'etable, a fatty body occur- 

 ring as a waste product, either 

 superficially as BLOOM on leaves, 

 or in quantity in fruits and stems 

 as in Myrica cerifera, Linn., and 

 CeroxylonKlopstockia,M.&rt,.;wa:'x.'y, 

 resembling bees' wax in consistence 

 or appearance ; ~ Coat'ing, a thin 

 epidermal layer of rods or grains, 

 forming a glaucous bloom on fruits 

 and leaves ; <- yellow, an impure 

 yellow, cf. cereus, melleus. 



wedge form, ~ -shape, cuneate. 



Weed, any useless or troublesome 

 plant which occurs without in- 

 tentional cultivation. 



Weel, a term borrowed from a wicker 

 eel-trap, for an arrangement of 



hairs which keeps out unbidden 

 insect guests from flowers (Ogle). 



Weep'ing, excessive loss of sap from 

 wounds, as in the vine or birch ; 

 bleeding ; adj. = pendulous in habit. 



Welt, a raised stripe on fruit such as 

 the lemon (Crozier) ; welt'ed, is given 

 by Crozier as " flaccid, drooping " ; 

 it is probably an error for WILTED. 



Wendangszellen (Ger. ), a disc-shaped 

 group of hyaline cells (or a single 

 cell) at the base of the oosphere 

 in Characeae. 



Wheat-ear Carnation, an abnormal 

 increase or pleiotaxy of bracts. 



wheel- shaped, rotate. 



whip-shaped, nauelliform. 



Whirl (S. F. Gray) = WHORL. 



white, when positive colour is absent ; 

 albus is white generally, nireus, as 

 pure as snow, candidus, radiantly 

 white, etc. ; ~ Chlor'ophyll, Gau- 

 tier's term for chlorophyll which 

 is rich in hydrogen and colourless ; 

 the normal green type is stated to 

 be poorer in that gas ; whi'tened, 

 dealbate, with a darker ground 

 tint ; whi'tish, albidus, albulus, etc. 



Whorl, pr. hwurl, the arrangement of 

 organs in a circle round an axis ; 



false- 



spurious 



= VERTICIL- 



LASTER ; whorled, pr. hwurld, dis- 

 posed in one or more whorls. 



Wick'er-hairs, an awkward and inex- 

 pressive rendering of the German 

 " Reusenhaare " ; cf. TRAP-HAIRS ; 

 WEEL. 



wild, spontaneous, growing without 

 cultivation or introduction. 



Wild'ering (Crozier) = Wilding, (1) 

 any wild plant ; (2) an escape from 

 cultivation. 



wilt'ed, become flaccid, the opposite 

 of turgid ; wilting, drooping, 

 having lost the quality of fresh- 

 ness. 



Wing, (1)=ALA, any membranous ex- 

 pansion attached to an organ ; (2) 

 a lateral petal of a papilionaceous 

 corolla; <~ Bract, the attached sub- 

 tending bract of Tilia ; winged, 

 alate. 



Win'ter-an'nual, a plant which ger- 



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