GLOSSARY 



1087 



Twining. Ascending by coiling round a 

 support. 



Umbel. A determinate, usually convex 



flower-cluster, with all the pedicels 



arising from the same point. 

 Umbellate, Borne in umbels; resembling 



an umbel. 

 Umbellet. A secondary umbel. 

 Umbellifer. A member of Ammiaceae, or 



Carrot Family. 

 Umbonate. Bearing a stout projection in 



the center; bossed. 

 Unarmed. Destitute of sphies, prickles, 



and the like. 



Ucinate. Hooked, or in form like a hook. 



Undulate. With a wavy surface; repand. 



Unguiculaie, Contracted at base into a 

 claw. 



Uni- (in compoimds) means one. 



Unicellular, One-celled. 



Unifoliolate. Applied to a compoxmd 

 leaf that has but one leaflet, as the 

 leaves of the Orange and Lemon. 



Unilocular, Possessing one locule or cell. 



Uniserial. Arranged in one series. Ap- 

 plied to parts that are arranged in one 

 horizontal whorl. 



Unisexual. Having only one kind of sex- 

 organs; applied also to flowers having 

 only stamens or pistils. 



Urceolate. Urn-shaped. 



Utricle, A small, thin-walled, one-seeded 



fruit. 

 Utricular. Like a small bladder, 



Vaginate. Surroimded by a sheath. 

 Valvate. IVIeeting by the margins in the 

 bud. not overlapping ; deliiscent by 



valves. 

 Valve. One of the pieces into which a 



dehiscent pod, or any similar body, 



splits . 

 Vein let. The smaller ramifications of 



veins. 

 Veins. Threads of fibro-vascular tissue 

 in a leaf or other organ, especially those 



which branch (as distinguished from 

 nerves) . 

 Velum. A fold of the inner side of the 



leaf-base in Isoetes. 



Velutinous, Velvety; with dense fine 

 pubescence. 



Venation. The veining of leaves, etc. 



Ventral, Ventrally. Being on the side 

 next the axis. 



Ventricose. Swelling imequally, or in- 

 flated on one side. 



Venidose. Finely veiny. 



Vernation. The arrangement of leaves in 

 the bud. 



Verrucose, Warty; covered with pro- 

 tuberances. 



Versatile. An anther attached at or near 

 its middle to the filament. 



Verticil. A whorl. 



Verticillaster . A pair of opposite cymes 

 that occur in the axils of the leaves of 

 Mints. 



Verticillate. Whorled. 



Vesicle. A small bladder or air-cavity. 



Vespertine.' Belonging to the evening; 

 applied to flowers that open at night- 

 fall. 



Vexillum. The standard of a papiHon- 

 aceous flower. 



Villous. Bearing long and soft hairs. 



Virgate. Wand-shaped; slender, straight 

 and erect. 



Viscid. Glutinous; sticky. 



Whorl. A group of three similar organs 

 or more, radiating from a node. Verti- 

 cil. 



Wing. Any membranous expansion. 



WooUij. Clothed with long and entangled 

 soft hairs. 



Zoospore, Literally, an animal spore ; 

 a vegetable spore endowed with the 

 power of locomotion, and therefore 

 appearing like an animal. 



Zygomorphous, Zygomorphic. Flowers 

 which are divisible in only one plane into 

 similar halves are called zygomorphous. 



