Water-gland 



A DICTIONARY 



Wing 



WATER-GLAND, a group of cells 

 beneath the water-pores of cer- 

 tain plants, as in Saxifraga, 

 which serve to facilitate or 

 regulate the transpiration ^ of 

 water. The cells composing 

 the glaud are rich in proto- 

 plasm but destitute of chloro- 

 phyll. 

 WATER-PORE, an aperture in 

 the epidermis directly over the 

 extremity of a vein in the leaves 

 of certain plants, as Galadium 

 esculentum. It is a stoma 

 whose guard-cells have lost 

 their function and become im- 

 movable, and its probable func- 

 tion is to facilitate the transpi- 

 ration of water. 



WATER-SPROUT (Hort.), an un- 

 usually long shoot or limb of 

 one year's growth, especially 

 upon the body of a tree where 

 older limbs have been removed. 



WATER-STOMA, see Water- 

 pore. 



WA'TER-STOR'iNG TlS'StJE, a 

 form of water-tissue adapted 

 for the storage of water for 

 the supply of surrounding 

 cells in times of drought, as 

 in many plants of dry climates. 



WAVED, said of a margin when 

 strongly undulate, but less 

 strongly than Ruffled. 



WAVY, alternately concave and 

 convex upon the surface or 

 margin. See Sinuate, Re- 

 pand, Undulate, and Crisp. 



WEATHER-PROUD, a gardener's 

 term, employed in England, 

 denoting that plants are 

 larger or more thrifty than 

 common for the season of the 

 year. 



WflDGE'-SHAPED, see Cuneate. 



WEED, a plant which grows 

 where it is not wanted and 

 which becomes troublesome. 

 Applied chiefly to wild plants. 



WEEP'lNG, (1) having the smaller 

 branches so lax that many of 

 them hang directly downward, 

 as those of sevenil species of 

 willow; (2) the copious exuda- 

 tion of sap from water-pores 

 or from an injured surface, iu 

 the latter case more often called 

 Bleeding. 



WflFT, a collection of interlacing 

 hyphae or other filaments. 



WflLT, a broad, raised stripe or 

 ridge upon the surface of a 

 fruit, as is occasionally seen in 

 the orange and lemon. 



WflLT'iiD, flaccid; droopiug. 

 (Obs.) 



WHEEL' -SHAPED, see Rotate. 



WHIP' -SHAPED, see Flagelli- 



FORM. 



WHIRL, see Whorl. 



WHORL, a set of organs arranged 

 in a circle around a stem or 

 axis; verticil. 



WHORLED, see Verticillate. 



WILD, (1) growing spontaneously 

 without care or cultivation, 

 either native or introduced; 

 feral; (2) in a natural con- 

 dition, not improved by cul- 

 tivation or artificial selection. 

 When used without qualifica- 

 tion Wild means strictly native. 



WILD'ERING, see Wilding. 



WILDING, (1) a cultivated plant 

 that has "run wild " or repro- 

 duced itself spontaneously; 

 wildering; (2) any wild plant; 

 wildling. In both senses ap- 

 plied to fruit-trees. A fruit- 

 tree, however, which has 

 sprung up spontaneously 

 -within cultivated ground is 

 not usually called a Wilding, 

 but merely a "chance seed- 

 ling." 



WlNG, (1) any thin or membra- 

 nous appendage, especially a 

 flattened appendage to a seed 



200 



