1902] 



ROCKY MOUNTAIN PLANTS 



367 



1" 



I- 



mostly short petioled ; stem leaves from broadly to narrowly 

 oblong or oblanceolate, 15-30 ^^ long including the short taper- 

 ing petiole : raceme crowded even in fruit, naked above : 

 petals obovate, emarginate, two of them with slightly narrowed 



mm 



m 



long : 



and claw -like base, 5-7"''" long: pod nearly globose, 5-8 

 diameter, two or three ovules in each cell ; style 2-3"^"^ 

 pedicels recurved, 5-10"^"^ long. 



This excellent species has the appearance of a Physaria» but of course is at 

 once separated by the fruit. It was secured on naked clay flats and ridges 

 on the Red desert, near the Bush ranch, Sweetwater co, Wyoming, June 10, 

 I900. The type number is 7081. It was again collected not far from the 

 type locality in June 1901, by J/t^rr/// and IVikox, no. 568. 



Opulaster Ramaleyi, n. sp. — Shrubby, 1-2"" high; the stems 

 and older branches brown with fibrous-shreddy bark; young 

 branchlets green, glabrous and somewhat angled : leaves numer- 

 ous and large, broadly ovate or subcordate in outline, some of 

 them slightly incisely 3-lobed, the margin more or less doubly 

 crenately dentate, 2-7*^"" long and almost as broad, glabrous on 

 both sides except occasionally some ciliolations on the veins 

 below: pubescence on pedicels soft and rather long, somewhat 

 tufted and substellate; on hypanthium and calyx short, hoary- 

 tomentose: sepals ovate, acute, soon reflexed in blossom but 

 erect in fruit, about 3™°" long: petals orbicular, slightly exceeding 

 the sepals: anthers dark purple: ovaries four, loosely united to 

 the middle, densely pubescent; carpels elliptic, inflated, more 

 than twice as long as the sepals, about 7 '"^ long, moderately 

 divergent, nearly distinct, pubescent, somewhat laterally com- 

 pressed at apex and terminated by the short style, usually 

 three maturing (sometimes only two): seeds single in the cells. 



obovoid, shining, about 2 



mm 



long. 



kh -u^ 



% 



',-A-- 



This is O. opulifolius probably, in so far as Rocky mountain specimens 

 have been so named. It is not the O, opuHfolitis (L.) Kuntze of the eastern 

 United States. The characters as given show that, and it is at once evident 

 to the eye when both species are seen together. The type specimens are nos. 

 108. 793, and 874 by Francis Ramaley, all from the same locality, near 

 Boulder, Colorado, 1900 and 1901. The earlier number is in blossom, the 

 two later in fruit. No. 2406 by G, E, Osterhout, 1901, is the same and from 

 the same locality. 



I'?. 



