CATALOGUE. 113 



than the subulate ovary ; petals j-1" long, obovate, entire, scarcely exceed- 

 ing the longer stamens and style, deciduous with the stamens from the calyx; 

 capsules sessile upon the petiole, somewhat 4-angled, nearly straight, attenu- 

 ate-subulate above ; seeds oblong-cylindrical, on a filiform placenta. — Stems 

 1-4' high, often becoming densely crowded with the obconical capsules, which 

 are 4-6'' long. Discovered by Nuttall in Southern Idaho. Not rare in Ne- 

 vada from the Havallah Range to the East Humboldt Mountains, and found 

 in Heber Yalley in the Wahsatch ; 6-8,000 feet altitude; June-Au- 

 gust. (425.) 



Gaura paevifloea, Dougl. Stem tall, erect, and with the margin of 

 the leaves villous with soft white hairs ; leaves ovate-lanceolate, acute or acu- 

 minate, repand-denticulate, clothed on both sides with a short velvety pubes- 

 cence ; spike virgate, strict, many-flowered, elongating in fruit ; bracts lance- 

 olate-subulate ; flowers very small, the calyx-tube shorter than the glabrous 

 ovary and exceeding the segments; anthers oval, retuse, attached by the 

 middle ; stigmas not at all or scarcely produced beyond the indusium ; fruit 

 oblong, sessile, obtusely angled above, 4-nerved. — Stems 2-5° high, with 

 small rose-colored flowers, and leaves 1-3' in length ; capsules 3-4" long, 

 obtuse at maturity. From Louisiana to Arizoiia and northward to the Platte 

 and the Columbia ; rather rare. Humboldt Pass, Nevada ; Stansbury Island, 

 Salt Lake ; June, September. (426.) 



CiEC-S!A ALPINA, L., Yar. INTEEMEDIA, Ehrh. DC. Prodr. 3. 63. Stems 

 erect, 3-10' high ; leaves slightly repand-denticulate, cordate, acuminate ; ; 

 bracts almost none ; fruit 1 -celled. — It is nearest to C. alpina, but is the C. 

 Lutetiana, Var. occidentalism of Nuttall, in Herb. Grray. Also collected by 

 LyaU in the Galton Mountains, and by Bolander in California. The species 

 extends from the Northern States and Canada to the Saskatchewan, Oregon 

 and Sitka. Foundin the Wahsatch Mountains, Utah ; 7-8,000 feet altitude ; 

 July, August. (427.) 



LOASACE^. 



Mentzelia albicaulis, Dougl. Stem 6-18' high, branching from the 



base, white and polished and nearly glabrous below, rather weak; leaves 



lanceolate, remote, more or less deeply sinuate-pinnatifid or toothed, sessile ; 



flowers solitary or somewhat clustered, bracteolate; petals obovate, 2" tong, 



light yellow, scarcely exceeding the short subulate-lanceolate calyx-segments ; 

 15 



