4M XCIII. LABIATiE. Lamium. 



6. S. RUGfifiFLORUM. Nutt. Sniall-flcnvered Dragonhead. 



SL Albescent; Ivs. ovate-lanceolate, deeply serrate, petiolate; bracts leafy, 

 rugflg'^ ciliate, raucronate-serrate ; caL upper segment much the Mpest ; Jls. 

 'small, verticillate, subcapitate, corolla scarcely exceeding the calyx.-jE) Woods, 

 Watertown, N., Y. Vasey. Mo., Nuttall. Saskatchawan ll^sj^R/c/ta idson. 

 Very rare. Flowers whitish, very small, the verticils iiivo^^B^BRid almost 

 spicate. Calyx dry and membranaceous. Upper lip ^j^^^K^olla. arched, 

 emarginate, central lobe of lower lip crenate. July, ^^^^^r 



Tribe 8. STACHYDE^.— Calyx oblique or ra^H^Ailabiate, 3—10- 

 toothed. Corolla bilabiate, upper lip galeate or ^^^^er lip unequally 3- 

 lobed. Stamens ascending, upper pair shorter. W^ -.^^ 



26. PHYSOSTEGIA. Benth.' 



dr. (pvaa, a bladder, and oTrjyrj, a covering; from the inflated corollas. 



Calyx campanulate, subequally 5-tootlied ; corolla tube mucli ex- 

 serted, throat inflated, upper lip concave, middle division of lower 

 lip largest, roundish, emai-ginate ; sta. 4, unconnected, ascending be- 

 neath the upper lip, the two lower rather longer. — Flowers opposite, in 

 a terminal, bradeate, A-roioed spike. 



P. ViRGiNiANA. Benth. (Dracocephalum Virg., denticulatum, variega- 

 tura and obovatum oT auth. fide Bailk.) Lioji's Heart. — Calyx teeili acute, 

 subequal. — % A beautiful plant, native in Penn., S. and W. States ! often adorn- 

 ing our gardens, where it spreads rapidly. It is 2 — 3;' high, very smooth, dark 

 green. Stem square, thick, rigid. Leaves opposite, closely sessile, 4 — 5' by §', 

 with remote and shallow teeth, of a shining dark green. Flowers in 4-rowed 

 spikes, nunierous, dense, or often subremote. Bracts subulate. Corolla pale 

 purple, about an inch long, spotted inside. Aug. Sept. ^ 



27. SYNANDRA. Nutt. * '^ 



Gr. (Tvv, together, avSpes ', in allusion to the coherence of the anthers. 



Calyx 4-cleft, segments unequal, subulate, converging to one side ; 

 upper lip of cor. entire, vaulted, the lower obtusely and unequally 

 3-lobed ; throat inflated ; upper pair of anthers cohering, having the 

 contiguous cells empty. 

 ■ / S. GRANDiFLORA. Nutt. Larse-fiowcrhig Synandra. 

 j -.SL subsiraple, nearly smooth, subterete ; Ivs. cordate-ovate, acuminate, ob- 

 tbsely dentate, often dilated at base, upper ones smaller, cauline sessile, lower 

 subpetiolate; yZi-. solitary and sessile; cat. seg. ovate, setaceously acuminate, 

 two upper larger than the two lower; cor. tube somewhat funnel-form, mouth 

 much inflated, upper lip entire, vaulted, lower 3-lobed, lobes' entire. — Banks of 

 the Ohio, Cincinnati, Nutt. Woods, near Vermillion liiver. 111. I Stem about 

 If high. Corolla about 1' long, yellowish-white, lower lip elegantly striated 

 with purple lines. June. 



/?. 1 petlolata. Wood. St. quadrangular, hirsute ; tvs. hirsute, deltoid, trun- 

 cate-cordate, all long-petiolate, lower petioles 4 — G' long, upper 1— 4'. Calyx 

 hirsute, almost hispid. — Cincinnati, Clarlc ! This is, perhaps, a distinct species. 



28. LAMIUM. 



Lat. lamUi, the name of a sea !Tio:.sler, to which the grotesque flowers may be likened. 



Upper lip of the corolla vaulted,- galeate, nearly entire, lower lip 

 broad, emarginate, lateral lobes truncate, often toothed on each side 

 near the margin of the dilated throat. 



L. AMPLEXICAULE. IlcnbU. 



Lvs. roundish, incisely crenate, floral ones broadly cordate, obtuse, sessile, 

 amplexicaul, lower ones petiolate. — (i) A small, slender herb, found in culti- 

 v'ated groumis. Stems ascending, .several from the same root. 6 — 10' high, with 



