358 GLOSSARY. 



Valve: a lid ; one of the pieces into which a pod, etc., splits. 

 Variety : a group of individuals having some character in which 



they differ from the typical form of the species. 

 Vascular : having or like vessels or ducts. 

 Vasculum : the botanist's collecting-bos. 



Vegetative cone : same as growing point. Functum vegeiaMonis. 

 Vegetative point : same as growing point. 

 Vein : a branch of the skeleton or frame-work of a leaf. 

 Veinlet : a small vein. 



Venation : the veining or pattern of veining in a leaf. 

 Ventral : on the side next the axis or centre ; opposite of dorsal. 

 Vernation : the arrangement of leaves in the bud. 

 Versatile : attached at a point so as to allow swinging to and fro. 

 Verticillate : whorled ; in whorls. 

 Vesicle : a little sac or bladder. 

 Vesicular : bladdery. 

 Vessel : duct. 



Vexillum : the upper petal or "banner" of a Papilionaceous corolla. 

 ViUose : having long soft hairs. 

 Viscid : sticky ; adhesive. 

 Vitreous: glassy. 



Vittce : oil-tubes in the fruit of the Umbelliferse. 

 Viviparous : germinating or sprouting from seed or bud while yet on 



the parent plant. 

 Voluble : twining. 

 Volva : an external covering or veil ; as in many Fungi. 



Water-pore : an orifice similar to a stomate, but with immovable 



guard-cells, filled with water. 

 Whorled : verticillate ; in whorls. 

 Wing : a thin expansion. 

 Winged : with a wing or thin expansion. 

 Woolly : with long entangled hairs. 



Xanthos (in compounds) : yellow. 



Xylem : the woody portion in the fibro-vascular bundle. 



Zone of life : the cambium in exogenous stems. 

 Zoospore : naked motile cells (spores) in some Cryptogams. 

 Zygospore : sexual spores with thick walls ; as in the Conjugata;, etc. 

 Zygosporem : the division whose representatives produce " resting" 

 spores or zygospores. 



