ULMUS-VACCINIUM. 147 



IfLMUS. 5—2. (AmentacetB.) 



america'na, (elm, white-elm, g-p. Ap. T^.) branches smooth; leaves oblique at 

 the base, having acuminate serratures a little hooking ; flowers pedicelled ; 

 fruit fringed with dense down. Var. pend^ila, has hanging branches and 

 smoothish leaves. 40-70 f. Flowers appear before the leaves, a magnificent 

 tree. 



ful"va, (slippery-elm, M. Ap. T^.) branches scabrous, white; leaves ovate-ob- 

 long ; very acuminate, pubescent on both sides ; buds tomentose, with a 

 thick tawny wool ; flowers sessile, smaller than the white-elm. Leaves 

 larger; stamens often 7. The mucilage of the inner bark medicinal. 

 CLVA. 21^. iAlga.-) 



lin'za, frond lance-linear ; margin undulate-crisped ; about an inch broad, ta- 

 pering at the base, green. Sea-shore. 

 URASPERMUM. 5—2. (UmbelUfercB.) [From owra, a tail, and Sjoermo, seed.] 



dayto'ni, (sweet cicely, J. %..) leaves compound, hairy ; leafets gash-toothed ; 

 umbels axillary and terminal, about 5-rayed ; style as long as the villose 

 germ, filiform, reflexed. 2 f. 

 UREDO. 21 — 6. (Fungi.) [From wro, to burn, on account of its burnt colour.] 



linca'ris, (yellow grain-rust, J. ©.) linear, very long, stained yellow, at length 

 but obscurely coloured. On the culms and leaves of barley, oats, rye^ 

 wheat, &c. 

 DRTICA. 19 — 4. {Urticea.') [From urendo, burning ; on account of the sensation it causes.] 



dia'cia, (common nettle, J. %..) leaves opposite, cordate, lance-ovate, coarsely 

 serrate ; flowers dioecious ; spikes panicled, glomerate in pairs, longer than 

 the petioles. 2-3 f. 

 USNEA. 21—5. (Filices.) 



plica'fa, frond pendulous, smooth, pale ; branches lax, very branching, sub- 

 fibrous ; the extreme ones capillary ; receptacles flat, broad, ciliate ; the 

 hairs very slender and long. On trunks and branches of trees ; most com- 

 mon on dry, dead limbs of evergreens, from which it often hangs in long, 

 green locks. 

 UTRICULARIA. 2—1. (Scrophularim.) [From utriculus, a litt\e bladder.] 



vulga'ris, (bladder-wort, y. Au. %.) floating; stem submerged, dichotomous; 

 leaves many-parted, margins bristly; scape 5-9-flowered; upper lip of the 

 corolla entire, broad, ovate ; spar conical, incurved ; flowers in racemes. 

 Ponds. 



siria'to, floating; scape 2-6 flowered ; root furnished with air-vessels; corolla 

 large, yellow striate with red ; spur much shorter than the lower lip. 



purpu'rea, scapes axillary, generally 2 to 3 inches long ; flowers purple. Ponds 

 on mountains. Mass. to Flor. 



tJVULARIA. 6—1. (LiliacecB.') [From uvula, a membrane of the throat, the soreness of 

 which this was supposed to heal.] 



perfolia'ta, (bell-wort, y. M. %..) leaves perfoliate, oval-obtuse, (lance-linear or 

 oval-oblong in the young state ;) corolla bell-liliaceous, scabrous or granu- 

 lar within ; anther cupsidate. 8-12 i. 



sessilifo'lia, (y. M. %..) stem smooth ; leaves sessile, oval-lanceolate, glaucous 

 beneath ; petals flat, smooth within ; capsules stiped. 6-12 i. 



grandiflo'ra, leaves perfoliate, oblong, acute; perianth smooth within, anthers 

 without awns; nectaries nearly round; pistil shorter than the stamens; 

 whole plant larger than the preceding species. 



VACCINIUM. 10—1. (EricecB.) [A corruption of baccinium, a berry.] 

 resino'siivt, (whortleberry, a. p. M. T2.) leaves slender, petioled, oblong-oval, 

 mostly obtuse, entire, bedewed with resinous specks beneath ; racemes lat- 

 eral, 1-sided ; pedicels shor', somewhat bracted; corolla ovate-conic, 5-cor- 

 nered ; berries black. One variety has a yellowish green, and another has 

 a reddish yellow corolla. 1-4 f. 

 corymbn'sum, (high whortleberry, w. M. T7.) flower bearing branches almost 

 leafless ; leaves oblong-oval, acute at each end ; the young leaves pubescent ; 

 racemes short, sessile, bracted ; corolla cylindrical-ovate. Swamps and wet 

 woods, 4 to 8 feet high. Berries large, black, sub-acid. 



