4i4 DIADELPHIA DECANDRIA 



inch wide, ovate-oblong, or lancc-ovatc, mostly obtuse (tho lateral ones often ellip. 

 tic), slightly mucronate, sometimes emarginate, rounded at base, rcticulaiely 

 veined, somewhat coriaceous, yellowish green and scabrous on the upper surface 

 hairy and somewhat canescent beneath,— the terminal one 1 fourth to 1 third 

 longer than the lateral ones; common petioles 1 fourth of an inch to an inch Loot, 

 hairy ; stipules ovate-lanceolate, with a long acumi nation, nerved, hairy and cili. 

 ate. Flowers in long paniculate racemes ; branches rough with an uncinate pu. 

 besccncc ; pedicels pubescent ; lower bract lance-ovate, acuminate, ciliate. Caly x 

 hairy ; segments acute, the lower one longer, conspicously pilose. Corolla violet. 

 purple, becoming greenish. Legume mostly of 2 or 3 joints, uncinately hispid; 

 joints semiorbicular, oval, or obliquely obovate. 



Hub. Dry open woodlands, and clearings: frequent. Fl. Aug. Fr. Sept— Octo. 



Obs. This was collected by D. Townsend, Esq. in 1831. It is in Muhlenberg } $ 

 Herbarium, along with his Hcdysurum ciliare, and is labelled "//. canadensi off? 

 I sent it to Dr. Boott, who pronounced it quite new to him, but suggested that it 

 might be the rigidum, of Elliott ; and in confirmation of that suggestion, I find 

 the plant so labelled in the Herbarium of the late Mr. tichircinitz, at the Phil a . 

 delphia Academy. Dr. B. also noticed its affinity to the canadense. In its gene- 

 ral habit, it has some resemblance to D. /xz/itcu/a/u/N,— and in fact it seems to be 

 intermediate between that species and D. cunadense ; but apparently distinct 

 from both. It must be confessed, however, that there are varieties which seem 

 to connect the present species with D. ciliare on the one side, and with D. cana- 

 dense and D. Dillenii (or D. marilarulicum, Willd. &c.) on the other,— so as to 

 render the discrimination somewhat dillicult. 



5. D. Dillktsii. Stem erect, branching, pilose ; leaflets oblong, or 

 ovate-oblong, somewhat glaucous and villosc beneath ; stipules subu- 

 late ; racemes paniculate, rather loose and slender; legumes with 3 or 

 4 rhomboid reticulated pubescent joints. Icoar, Dill. J/ort. Jilt ham. 

 tab. 144./ 171. 



D. marilandicum. I) C. Pvodr. 2. p. 328. Beck, Bot. p. 84. 

 Hcdysarum marilandicum. Willd. Sp. 3. p. 1189. Pers. Syn. 2. p % 

 321. Ait. Keiv. 4. p. 342. Muhl. Catal. p. 66. Pursh, Am. 2. p. 482. 

 Jfutt. Gen. 2. p. 109. Bart. PMU%.p. 78. Ell Sk.Z.p. 214. Tore. 

 Comp.p.268. Lindl. Ency. p. 689. Eat. Man. p. 160, Hoi oi Linn. 

 and Clayt. {fide Boott. in Litt.). 

 H. canadense. Florul. Cestr. p. 82. Not of Linn. &c. 



DlLLENIUs's DeSMODIUM. 



Root perennial. Stem about 2 feet high, striate, puberulent and pilose, branch* 

 ing, branches angular and striate. Leaflets an inch and half to 3 inches long, and 

 3 fourths of an inch to near 2 inches wide, varying from oval to oblong, and ovale, 

 mostly obtuse, sometimes acute, pilose with appressed hairs on both sides, villose 

 when young; common petioles half an inch to an inch and half long, pilose ; stip- 

 ules subulate, a little dilated at base, pilose. Flowers in rather slender paniculate 

 racemes ; branches angular, and often sulcate, rough ish with uncinate pubescence. 

 pedicels roughlsh-pubescent ; lower bract lance-ovate, acuminate, pilose. Calyx 

 pilose ; segments lance-ovate, the lower one longer. Corolla purple. Legume 

 mostly of 3 or 4 joints, uncinately pubescent ; joints more or less rhomboid by an 

 obtuse angle on the upper margin. 



Hob. Woodlands, and borders of thickets: frequent. Fl. Aug. Fr. Scpt-Octo. 



