104 BOTANY. 



Phaseolus retusus, Benth. (PL Hartw. 11). — Stems stout, trailing, 

 6 to 8 feet long-, from a very large perennial root, pubescent with short 

 spreading hairs: leaflets rhomboid-ovate, 2 or 3 inches long, thick, obtuse 

 or acutish, occasionally retuse, mucronate, strongly veined : racemes elon- 

 gated and long-pedunculate, rather many-flowered : flowers purple, half an 

 inch long, on short pedicels : pods broadly oblong, slightly falcate, 2 inches 

 long, compressed, 4-6-seeded. — From Western Texas to Arizona; at 

 Chiricahua Agency, Ariz., Rothrock (522). 



Rhynchosia Texana, Ton*. & Gray (Fl. i, 687). — Diffuse, slender, 

 somewhat twining, a foot or two high, minutely pubescent throughout: 

 leaflets ovate to linear-oblong, an inch long or usually less, obtuse at each 

 endj mucronulate, often resinous-dotted beneath: flowers 3 lines long, on 

 short pedicels, solitary in the axis, or rarely 2 to 5 together upon a very 

 short peduncle: pods oblong, narrowed to the base, about 8 lines long. — 

 From Texas to Arizona ; at Sulphur Springs, Ariz., Rothrock (646). 



Hoffmanseggia* Jamesh, Torr. & Gray (Fl. i, 393). — Finely pubes- 

 cent ; stems clustered, herbaceous, from a stout woody root, erect or decum- 

 bent, often a foot high or more : pinnae 1 to 3 pairs ; leaflets 4 to 7 pairs, 

 oblong, obtuse, 2 or 3 lines long, glandular-dotted beneath : stipules and 

 bracts subulate-setaceous : raceme open : sepals oblong, acute, 3 or 4 lines 

 long, equalling the corolla, glandular-dotted, as also the upper petals : claws 

 of the petals short and nearly naked : pods an inch long, nearly half as 

 broad, falcate, dotted and pubescent, with plumose hairs on the edges, 2—1- 

 seeded. — From Colorado and Texas to New Mexico ; at El Rito and else- 

 where in New Mexico, Rothrock (95, 1010). 



Hoffmanseggia stiucta, Benth. (Gray, PI. Wright i, 56). — Finely 

 pubescent, somewhat glandular above, not glandular-dotted ; the clustered 

 stems erect, from a perennial root, a half to a foot high : pinna?. 4 to 6 pairs; 

 leaflets 6 to 8 pairs, oblong, obtuse, a line or two long ; stipules and brads 



* HOFFMANSEGGIA, Cavanilles. — Calyx-tubo very short, the 5 oblong or lanceolate, nearly equal 

 segments slightly imbricate or valvate. Petals oblong or ovate, slightly unequal, imbricated, the upper 

 one included and usually dissimilar. Stamens 10, distinct ; filaments usually glandular at base: anthers 

 uniform, versatile, dehiscent longitudinally. Style often incurved-clavate J stigma terminal. Pod flat, 

 thin, '2-valved, linear or ovate, several-seeded. — Perennial herbs or low shruhs, mostly glandular, with 

 bipinnate leaves and small leaflets, yellow racemose flowers, and deciduous bracts.— Bkcth. d Hook. 

 Gen. PI. i, 567. 



