OF ARTS AND SCIENCES. 369 



teeth. — In the JSanta Catalina Mountjiins, Arizona ; C. G. Pringle, 

 1881. Our other species, H. Tcxanu, Gray, is taller, with the twice 

 larger reddish flowers more or less pauicled, the calyx-lobes more 

 acuminate, the petals more abruptly contracted to a comparatively 

 narrower claw, and the carpels pectinately crested. The narrowed 

 base of the erect petal is in both species strongly concave or chan- 

 nelled. 



LuPiNus Plattensis. {L. ornatus, Dough, var. f/labratus, Wat- 

 son.) Stems herbaceous from an underground rootstock ; appressed 

 silky-villous throughout, with a somewhat glaucous hue : leaflets 7 to 

 9, spatulate, acutish or obtuse, glabrous above, on rather short petioles : 

 racemes loose, shortly peduncled ; bracts short, deciduous : flowers 

 half an inch long, pale blue, with a conspicuous darker spot upon the 

 standard. — A readily recognized species, common on the Upper Platte 

 and northward. 



LuPiNUS Havakdi. Apparently perennial, the several herbaceous 

 stems 1 to 1^ feet high, leafy, at length branched, loosely appressed 

 silky-villous throughout, the pubescence upon the stems mostly short : 

 leaflets 7, oblanceolate, glabrous above, 4 to 10 lines long, short-peti- 

 oled ; stipules very narrow, elongated : raceme elongated, the decid- 

 uous bracts shorter than the narrow slightly gibbous calyx : petals 

 purple with a light spot on the standard, broad, G lines long : pod 

 narrowly linear, 12 to 18 lines long by 2 broad, 6-8-seeded. — Hills 

 near Presidio, W. Texas; Dr. V. Havard, U. S. A., May, 1881, 

 Allied to Zi. sericeus, L. Sitgreavesii, and some Mexican species, and 

 the most eastern representative of the group. 



Dalea rubescens. {D. nana^ Torr., var, elatior, Gray, PI. 

 Wright. 1. 46.) With the simple tall erect stems and dense oblong 

 heads of D. aiirea, but more slender, the leaves pinnately trifoliolate, 

 and the flowers smaller, the yellow petals becoming purplish. — West- 

 ern Texas; at the Limpia Pass, 124 Wright, and at Fort Davis, Dr. 

 V. Havard, 1881. 



Dalea scariosa. Glabrous and glaucous, the herbaceous stems 

 slender and branching: leaflets 7 to 9, cuneate-obovate, obtuse or 

 refuse, 3 or 4 lines long ; lower half of the rhachis naked : spike 

 dense, becoming 2 inches long and open in fruit, on a short peduncle ; 

 bracts thin and greenish, ovate, acuminate, the white margin somewhat 

 lacerate : calyx slightly pubescent and obscurely ribbed, the acuminate 

 narrowly deltoid teeth about half the length of the tube and some- 

 what tomentose on the margin ; petals pink. — Near Albuquerque, 

 New Mexico; Kev. E. L. Greene, 1877. 

 VOL. XVII. (n. s. IX.) 24 



