270 PROCEEDINGS OP THE AMERICAN ACADEMY 



blunt, the erect styles somewhat coherent below ; dissepiments ciliate. 

 — On shaded slopes in the Sierra Madre, Chihuahua ; C. G. Pringle 

 (n. 1200), Sept., 1887. Somewhat resembling L. Greggii, under 

 which name it has been distributed. 



Ceanothus azureus, Desf., var. (?) parvifolius. A widely 

 branching shrub, with slender branchlets and small narrow leaves, 3 to 



9 lines long; fascicles of flowers in a very short, mostly naked, raceme- 

 like thyrse (an inch long or less), the pedicels scarcely a line long. — 

 On rocky slopes of the Sierra Madre, Chihuahua ; C. G. Pringle 

 (n. 1205), Oct., 1887. 



Lupinus montanus, H.B.K., var. glabrior. A nearly glabrous 

 form, with some fine pubescence. — On high wooded slopes of the 

 Sierra Madre, Chihuahua, at 9,700 feet altitude ; C. G. Pringle 

 (n. 1206), Oct., 1887. There can be little doubt that this species 

 includes both L. vaginatus, Cham. & Schlecht., and L. jlagillaris, 

 Bertol. 



Hosackia Chihuahuana. Annual, erect, very finely appressed- 

 pubescent, a foot high ; stipules foliaceous, small (about a line long), 

 oblong-oblanceolate ; leaves shortly petiolate, 5-7-foliolate, the leaflets 

 oblanceolate, acute to retuse, 6 lines long or less : peduncles about 

 equalling the leaves, 1-3-flowered, the bract at the summit small, 

 trifoliolate ; calyx 2 lines long, the teeth as long as the tube ; petals 

 yellow, turning brownish purple: pod nearly straight, about an inch 

 long. — On shaded rocky slopes in the Sierra Madre, Chihuahua ; 

 C. G. Pringle (n. 1210), Sept., 1887. Differing from H. gracilis in 

 pubescence, small stipules, shorter petioles, and shorter calyx. 



Astragalus Yaquianus. Of the Mollissimi ; tomentose (the 

 leaflets appressed-villous), perennial, the ascending stems a foot high : 

 leaflets 10 to 15 pairs, narrowly oblong, acute or subacuminate, 6 to 

 12 lines long: peduncles stout, about equalling the leaves: flowers 

 yellow, becoming reflexed, 8 to 10 lines long; calyx white-tomentose, 

 half as long, the linear teeth shorter than the cylindrical tube ; petals 

 erect : ovary and pod glabrous, 2-celled, the latter erect, sessile, coria- 

 ceous, compressed-ovate deeply sulcate on the back, h inch long. — 

 On moist banks and gravelly bars of the upper Yaqui River at Guer- 

 rero, Chihuabua; C. G. Pringle (n. 1218), Sept., 1887. 



Astragalus scalaris. § Scytocarpi; biennial, very sparingly and 

 finely pubescent, the suberect very slender stems 2 feet high : leaflets 



10 to 12 pairs, linear, 2 to 6 lines long, retuse or obtuse: peduncles 

 equalling or exceeding the leaves, bearing a slender raceme of small 

 distant spreading flowers : calyx campanulate, a line long, with short 



