\ RypBERG: Rocky MounraiN FLORA 405 
sgpals rounded ovate, rounded at the apex, about 5 mm. long, half 
as long as the pink obovate petals; inflorescence 5~10-flowered, 
-Short, little exceeding the leaves, bractlets lanceolate ; capsule 
shorter than the sepals ; seeds about 2 mm. long, black and very 
glossy. ; 
The few specimens of this species that are found in our her- 
baria bear a variety of names, as C. caroliniana, C. caroliniana 
lanceolata, C. caroliniana sessilifolia and C. lanceolata sessilifolia. 
The original C. /anceolata Pursh is a much larger plant with broad, 
strongly 3-ribbed stem-leaves, elongated inflorescence and large 
flowers, the sepals being about 6 mm. long. The type of C 
caroliniana sessilifolia Torr., is a plant somewhat resembling the 
present species, but with somewhat broader leaves abruptly con- 
tracted at the sessile base and with acutish sepals. Neither in 
the herbarium of the New York. Botanical Garden nor in that of 
Columbia University is found any other specimen matching the 
original collected by Bigelow. Most species of C/aytonia are 
found near water or in damp places. The type of C. rosea was 
collected on rather dry hills, at an altitude of 2200-2300 m. 
CoLtorapo: La Veta, 1900, Rydberg & Vreeland, 6300 (type) ; 
“Colorado,” G. C. Woolson; 1875, W. A. Henry; Graham’s 
Peak, 1899, C. F. Baker, 305. 
Wyominc: Pole Creek, 1894, Avex Nelson, 27. 
Cerastium pulchellum sp. nov. 
how decumbent perennial with horizontal cespitose rootstock : 
stems 5-10 cm. long, finely viscid pubescent; leaves oblong to 
oval, obtuse or rarely acutish, about 1 cm. long and 4 mm. wide, 
subsessile and slightly connate at the base, viscid pubescent on 
both sides; peduncles 1-1.5 cm. long ; inner sepals oblong ; outer 
oval, scarious- -margined both on the side and at the rounded apex, 
about 4 mm. long; petals obcordate, 10-12 mm. long. 
This species is nearest related to C. Zarlet and C. behringianum. 
From the former it differs in the low habit, the very obtuse scar- 
ious-tipped sepals and the short blunt leaves; from the latter in 
the large petals and the scarious-tipped sepals. . It grows in the 
mountains at an altitude of about 3900 m. 
Cotorapo: Hayden Peak, 1898, Baker, Earle & Tracy, 573. 
