432 



GLOSSARY. 



petiole 3 times divided, or with bipin- 



Date divisions on each side. 

 Tripinndiijid; pinnately dissected, with the 



primary divisions twice pinnatifld. 

 TripUnerved ; having 3 principal nerves 



from the base. 

 Triqmtrous ; having 3 angles and 3 flat 



sides, as the cu]ms"of many Cypeeace-e. 

 Trisepalous ; having 3 sepals. 

 Tritemate leaf. When the petiole is twice 



divided tornately, and each final branch 



bears 3 leaves. 

 Truncate; having the end blunt, as if 



transversely cut off. 

 Tube; a pipe or hollow cylinder. 

 Tuber. A solid fleshy knob attached to 



roots. 



Tiihercle. A small excrescence, knob, or 

 point on a surface, making it rough or 

 uneven. 



Tttberculate; covered with tubercles. 



Tiiberijerous; bearing or jux)ducing tubers. 



TiiJjeroii^., consisting of, or fleshy and solid 

 like tubers. 



Tubular; having a tube, or constructed 

 like a tube. 



Tuft; a bunch or fascicle growing from the 

 same root, or originating nearly at the 

 same point. 



Tumid; swelled, or enlarged li':e a swell- 

 ing. 



Tunicate; coated ; having concentric coats, 



or thin layers. 

 Turbinate; top shaped ; resembling an in- 

 verted cone. 

 Tu)f. The green sward, or grassy sod. 

 Turgid; swelled, but not inflated. 

 Tiirion. A thick, tender 5"oung shoot of & 



plant, as of Asparagus, Hop, <vc. 

 Tussock. A dense tuft or bunch formed at 



the root, as in some species of Oarex, 



Grasses, &c. 

 Twin; two of the same kind connected, or 



growing together. 

 Tiiinincj; winding round and ascending 



spirally. 



Txco ranked (or roiced). See disiicJiouff. 



Type; a model or form; a pattern individ- 

 ual which unites in itself most complete- 

 ly the characters of a gro p. 



Umbel. A kind of inflorescence, in which 

 the flower stalks proceed from a common 

 centre, like rays, or the braces of an um- 

 brella. Umbels are simple, or compound, 

 which see. 



Vmbcllate; in the form or manner of an 

 umbel. 



Vmbfllet. A partial umbel : one of the 

 subdivisions of a compound urnbtl : 

 which see. 



JJmljelliferous; bearing the flowers in um- 

 bels. 



UmMUcate; navel like; having a central 



pit. or depression. 

 Umbonate; protuberant, having a boss or 



elevated point in the centre. 

 Unarmed; without thorns or prickles. 



Uncinate; hook shaped; hooked at the 

 end. 



Undulate; wnvy ; curved, or risiig and 

 depressed, like waves. 



Unequal; the parts not corresponding in 

 length, size, form, or duration. 



UnguicxClate; having a slender or narrow 

 base, like an unguis, or claw. 



Uniform, or tiniformly; in one form, or 

 manner ; equally and alike. 



Unilateral; on one side; growing, or in- 

 serted, all on one side of a stem, or com- 

 mon peduncle. 



Unisexual ; of one sex — i. e., staminate or 

 pistillate, only. 



Urceolate; pitcher-shaped, or urn-shaped ; 

 swelling below, and contracted to a neck 

 above. 



Utricle. A little sac, or thin membranace- 

 ous pericarp, which encloses, but does 

 not adhere to, the seed. See Caryop' 



Valvate aestivation. TVhen the sepals or 

 petals are folded together, and fit by their 

 edges, without overlapping. 



Valves. The several parts of a regularly 

 dehiscent pericarp, — especially of a cap- 

 sule: also, the scales which close the tube, 

 in some corollas : and the chaffy pieces 

 which cover the flowers of the Grasses. 



Var. ( Varietas); a variety or modification 

 of a species. 



Yarietu. A new or unusual form, or mod- 

 ification of a i>lant. produced by acciden- 

 tal causes. — such as crossins, soil, climate, 

 culture, &c. but not permanently, or at 

 least, not spe<:ificalb/, distinct. 



Vascular plants. The higher orders of 

 plants (including all above the Mosses^, 

 — composed moi-e. or less of woody fi.bres, 

 and elongated cells or vessels, in the form 

 of slender tubes. 



Vaulted; arched over, like the roof of the 

 mouth. 



Veins: the elongated vessels of leaves ; of 



ten synonymous with nerves. 

 Veined; having the vessels variously 



branching, over the surface. 

 Venation of a leaf. The distribution of the 



veins, or frame-work, in the lamina or 



blade. 



Ventral; contained in, or belonrins to, the 

 belly. " " 



Ventral suture. The line or scam of a 

 carpel, or folded leaf, formed bv the union 

 of its margins; the opjjosite of dorsal. 



Ventr icose. ■' l)c'[]\c(\: swelling out in the 

 middle, or below it. 



Vernation. The mode in which young 

 leaves are folded and packed in a bud. 



Verrucose: warty; covered ^\-jth wart like 

 exercsences. 



Versatile anther. When it is fixed by the 

 middle on the point nf the filament, and 

 moves round lightly and readily, — as in 

 the Grasses &c. 

 I Vertical, or vertically; in a perpendicular 



