Planted Lindheimeriatue. 175 



A. nana, Nutt., Bot. Mag., and A. laevigata, JSutt. from A. fru- 

 ticosa. The A. Roemeriana, Scheele in Linncea, 21. p. 461, 

 is doubtless a form of A. fruticosa or of A. panieulata. 



375. Dale a laxiflora, Pursh. Fl. 2. p. 741 ; Torr. &f 

 Gray, FL 1. p. 307. D. penicillata, Moric. PI. Nouv. Amer. 

 t. 45. Dry and rocky prairies, between the Rio Colorado 

 and Guadaloupe. June, in flower. September, in fruit. 



f D. pogonathera, Gray, PL Fendl. p. 31. On the 

 Liano. October. — Stems a span high, numerous, from 

 a thickish, apparently perennial root. Vexillum violet-pur- 

 ple. 



f D. aurea, Nutt. Gen. 2. p. 101. Dry prairies, Upper 

 Guadaloupe. June. 



f D. nana, Torr. in Gray, PL Fendl. p. 31. Post-Oak- 

 openings, on the Pierdenales. June. Also gathered by Mr. 

 Wright on the Rio Grande, and by Mr. Gordon on the Ar- 

 kansas. 



376. D. frutescens (sp. Tiov.) : glaberrima ; caulibus lig- 

 nescentibus ramosis glandulis tuberculiformibus raris obsitis ; 

 foliolis 6-8-jugis glauceseenti-asruginosis obovatis retusis 

 obcordatisve manifeste petiolulatis subtus (rachique in foliis 

 summis submarginata) grosse glandulosis ; spicis paniculatis 

 brevibus paucifloris ; bracteis coriaceis ovatis muticis glandu- 

 losis calycem vix eequantibus caducis ; tubo calycis sessili 

 glabro glandulis magnis cerinis ornato, dentibus brevibus tri- 

 angulato-subulatis margine villosis ; corolla violacea, carina 

 maxima vexillo plus duplo longiore. — Rocky hills, and high 

 plains, along the margin of thickets, on the Guadaloupe, 

 Sabinas, and Pierdenales. July, August. (Western Texas, 

 and on the Rio Grande, Mr. Charles Wright. Monterey, 

 N. Mexico, Dr. Edwards in Herb. Torr.) This is a shrubby 

 species, a foot or two in height, and totally distinct from D. 

 citriodora, for which I at first mistook it. The flowers are 

 more like those of D. nutans, but they are much fewer, 

 sessile, the calyx remarkably glandular ; the leaflets are of 

 a different form, not at all crenate ; and there is a gland, 



