SYNOPSIS OF THE FLORA OF COLORADO. 33 



HOFFM ANSEGGiA 1 JAMES!!, T. & G. Fl. N. Am.} p. 393. Canescently- 

 pubescent ;. low, much branched from a shrubby base; stipul s .subu- 

 late, entire; pinnae 5, abruptly 10-16 foliolate; leaflets oval, obtuse at 

 both ends, nearly glabrous above ; racemes elongated, opposite the 

 leaves ; flowers nodding or reflexed, rather large ; calyx a little oblique, 

 the four upper segments lanceolate, acute, all meuibranaceous, at length 

 deciduous from the persistent base ; petals not glandular at the base, 

 the upper one smallest, marked with reddish spots; filaments declined, 

 hairy below, all fertile ; style subulate, dilated above and somewhat 

 gibbous at the apex; legumes about 1' long, broadly oblong, more or 

 less lunate, scabrous, flat, 2-3 seeded, sprinkled, as well as the leaves, 

 calyx, and petals, with sessile black glands. On the plains of Eastern 

 Colorado, Dr. Bell, 



HOFFMANSEGGIA DREPANQCARPA, Gr. PI. Wright, 1, p. 58. Mi- 



iiutely cinereous-puberuleut, wholly destitute of glands ; stems nu- 

 merous, l'-8' high, springing from a thick, ligneous root 6'- 8' deep; 

 stipules and bracts ovate-acute, caducous 1 ; pinnae 3-5 pairs, besides 

 the terminal one ; leaflets 7-10 pairs, about 3" long, crowded, subfal- 

 cate, nerveless ; racemes loose-flowered, elongated, on long, slender, 

 axillary peduncles; calyx 3" long, persistent, its divisions oblong-lan- 

 ceolate, obtuse or acutish ; petals yellow, a little longer than tbe calyx, 

 broadly obovate, very obtuse, nearly alike, without claws, naked and 

 glabrous ; filaments equal, antlieriferous, villous-barbate below the 

 middle ; ovary smooth ; pod broad-linear or oblong, very obtuse at each 

 end, strongly falcate, flat, li'-U' long, following the strong curvature, 

 3"-o f/ wide, of exactly the same width throughout, glabrous or minutely 

 puberulent under a lens, 9-10-seeded ; valves chartaceous, finely reticu- 

 lated, transversely impressed between theseeds. Canon City. Brandeyee. 



CASSIA CILUI.ECRISTA, L. Xear Denver, Porter. 



SCHRASKIA USCIXATA, Willd. On the plains, Porter. 



ROSACE/E. 



PRUNUS AMERICANA, Marsh. Near Denver, Dr. Smith. 



PRUXUS CHICASA, MX. ? Canon City, Brandegee . 



PRUNUS PEXXSYLVAXICA, L. Hall & Harbour, 148 : Porter. 



PRUNUS YIRGIXIAXA, L. Hall & Harbour ; Brandegee ; B. H. Smith. 

 South Park and Mountain of the Holy Cross, Coulter. 



SPIRJEA OPULIFOLIA, L. Meehan. Platte River, Coulter. 



Var. PARYIFOLIA, Gr. Much smaller in all its parts. Hall & Har- 

 bour, 150; Brandegee. 



SPIR^A DUUOSA, Xutt. (S. arucfolia, Smith, var. discolor, T. & G.) A 

 branching shrub, 2 -5 high; leaves broadly ovate, cuneate and 

 petioled, obtuse, sublobate and dentate, scarcely mucronate, paler and 

 sericeous beneath, smoother or nearly glabrous above, 6"-ll!" long : 

 flowers numerous, in more or less branched terminal panicles; branches 



1 HOFFMAXSKGGIA, Ciiv. Sepals 5, united into a short, obcouic base, somewhat 

 equal. Petals 5, obovate, on short claws, somewhat unequal, spreading, the upper one 

 concave, one or more of them often glandular at base. Stamens 10 ; filaments i: 

 hairy or glandular, and thickened or dilated towards the base, nearly equal : antlu-i's 

 oval, nearly uniform. Style as long as tin- stamens, somewhat thickened towards ihe 

 apex. Legume oblong or linear, often falcate, compressed, dry, ->-valved. ^-10-serdt.-<l. 

 Low, perennial herbs, or suffrutesceut plants, often dotted with blaek glands. 1 .. 

 abruptly or unequally bipiimate. Racemes opposite the leaves ; flowers yellow. Glands 

 either sessile or pedicellate. T. f G. FL X. Am. 



3 F C 



