Ordbr 116.— URTICACBoE. 63'7 



some axil Rare northward, frequent South. Feb., Mar. (South). Apr. — Jn. 

 (North). § Eur. 



4 XT. purpurdsoens Nutt. Assurgent, beset with spreading stings ; his. hroadig 

 ovate, cordate, S-veined, coarsely crenate-serrate ; glomemles capitate, much shorter 

 than the petioles, dense, axillary, spioate at top. — Ky. to La. Sts. purplish, 12 

 to 18' high, clustered. Lvs. variegated, 1' long and wide, petiole 6 to 9". Ifar. 

 — ^May. 



5 TJ. chamsdroides Ph. St. bristly with stings ; lvs. subsessile, ovate, serrate, 

 strigous beneath; glomerules a±iUsiy, sessile, subglobozis, re&exeA. — On the islands 

 of Ga. (Pursh.) Lvs. small. Stings white and very conspicuous. May. — Is this 

 a variety of U. urens ? 



2. LAPOR'TEA, Gaudicli. Wood Nettle. Flowers ff or 3 $ ; $ 

 calyx 5-parted ; stamens 5 ; ovary rudimentary, hemisplierical ; ? calyx 

 4-sepaled, the 2 outer minute, the 2 inner foliaceous in fruit ; stigma 

 subulate, elongated; achenia compressed-lenticular, very oblique, finally 

 reflexed on the winged pedicel. — 21 Hairs stinging. Lvs. ample, alter- 

 nate, ovate. Fls. in axillary panicles, the lower sterile, upper fertile. 

 L. Canadensis Gaud. Hispid and stinging ; lvs. on long petioles, broad-ovate, 



rounded or subcordate at base, serrate, acuminate ; panicles axillary, solitary or 

 in' pairs, divaricate, mostly shorter than the petioles, the fertile nearly terminal, 

 elongated in fruit. — Bamp woods, TJ. S. and Can. St. 2 to 6f high, mostly simple, 

 flexuous at top. Lvs. 3 to 5' by 2 to 3', more or less hispid both sides, sometimes 

 nearly smooth. Lower petioles 3' long. Fls. minute, in panicles 1 to 4' in length, 

 the fertile panicle about 2', erect, enlarged in fruit. Aug. (Urtica Canadensis 

 and divaricata L.) 



3. PrLEA, Lindley. Rich-wked. (Lat. pileus, a cap ; from the 

 resemblance of one of the sepals of P. muscosa.) Flowers 8 ox $ $ . 



3 CaJyx of 3 or 4 equal sepals ; stamens 3 or 4. $ Calyx of 3 oblong, 

 unequal sepals ; stamens rudiments 3, cucullate opposite the sepals ; 

 achenium roughened, opaque, ovate, erect, nearly naked. — (D Smooth, 

 stingless, with opposite lvs., united stipules and dense, axillary clusters, 

 both kinds mixed. 



P. pdmila Gr. Ascending, weak, succulent ; lvs. on long petioles, rhombic- 

 ovate, crenate-serrate, membranous and glabrous, 3-veined ; fls. in short clusters ; 

 S sepals slightly unequal. — CD In waste places, about buildings and in woods, U. 

 S. and Can. St. fleshy, semi-transparent when growmg in shades, smooth and 

 shining, 3 to 18' long, simple or branched. Lvs. pale green, 1 to 2' by 8 to 16", 

 I>etioles of about the same length. Sep. much shorter than the greenish, mottled 

 achenium, one of them a little longer than the other two. Jl. — Sept. (Urtica, 

 L. Adice, Eaf.) 



4. BCEHME'RIA, Jacq. False Nettle. '(Named for G. F. Bmhmer, 

 a German botanist.) Flowers 51 or 3 $ . $, Calyx 4-parted, with lan- 

 ceolate, acute segments ; stamens 4 ; ? calyx tubular, truncate or 4- 

 toothed, persistent and closely investing the ovate, pointed achenium. 

 — Herbs or shrubs, stingless. Lvs. opposite or alternate. Fls. clus- 

 tered. 



1 B. cylindrioa Willd. Herbaceous, dioecious, smoothish; lvs. opposite, ovate, 

 acuminate, dentate, on long petioles; sterile spikes interrupted, fertile cylindrio. — 

 A coarse, nettle-like plant, in swamps and bottoms. Mid. and 'W. States. St 

 slender, obtusely 4-angled, channeled on each side, 2 to 3f high. Lvs. 3-veined, 

 3 to 5' long, half as wide, petioles 2 to 3', the upper sometimes not quite opposite. 

 Fls. minute, tho fertile spikes 1 to 2' in length, the barren spikes longer and more 

 slender. JL, Aug. (Urtica capitata L ?) 



2 B. lateriflora Muhl. Whole plant rongh-pubescent, monceeious ; lvs. all alter- 

 nate, ovaie-lamceotate, long-acuminate, dentate, rounded and subpeltate at base, on 



