PLATYSTEMON AND ITS ALLIES. 161 
Carpels soft-hirsute and with stronger linea- 
i 26. P. horridulus. 
Carpels hirsute; marking not known............ 47. P. australis. 
Petals sessile; corollas rotate or saucer-shaped. 
Fruiting peduncles erect; 
Corolla white; filaments often toothed at sum- 
mit 42. P. leucanthus. 
Corolla cream-color or yellow; filaments narrow, obtuse. 
etals broadly obovate. 
Carpels lineolate, obscurely tuberculate be- 
10n 
tween the lines 45. P. remotus. 
Carpels smooth, even the dorsal nerve ob- ‘ 
scure 43. P. microlobus. 
Carpels finely lineolate only 44. P. Arizonicus. 
Petals narrow, oblong to elliptical. 
Carpels delicately wrinkled 25. P. elegans. 
» CIES 
Carpels obscurely both lineolate and tuberculate 46. P. leptander. 
Fruiting peduncles nodding 
Carpels long and slender, many-jointed, hirsute 
to almost glabrous > yerecundus. 
Carpeis short, forming an oval or oblong fruit; 
carinate, otherwise even, short-hirsute....... 50. P. hispidulus. 
ightly carinate and closely-wrinkled, hi 
Sule. 54. P. cernuus. 
delicately lineolate, glabrous......s........++---- 52. P. setosus. 
1. P. catrrornicus. Benth. Trans. Hort. Soc., 2 ser. i. 
405, 406, in part; Hook. Bot. Mag. t. 3579; Torr. & Gray, 
Fl. i.65,excl.vars. lineare and leiocarpum. Seldom a foot-high, 
loosely branched, decumbent, the branches stout, fleshy, 
glabrous: leaves linear-oblong, about 1} inches long, often 
2 inch broad, very obtuse, even occasionally retuse, rather 
closely hispid-ciliate with ascending hairs, otherwise nearly 
glabrous: peduncles little exceeding the leafy branches, 
stout, sparsely almost hispid-hairy with short, stiff, slightly 
ascending hairs: corollas 1 inch broad, saucer-shaped, the 
Obovate petals cream-color, with a yellow spot at base: 
stamens very unequal, the outer filaments scarcely half as 
long as the inner, not longer than their linear anthers and 
obcordate, the inner spatulate-oblong, merely obtuse; both 
