NEW OR NOTEWORTHY SPECIES OF PACIFIC COAST 
PLANTS. 
By CHARLES V. PIPER. 
The identity of many of the older described species of northwestern 
plants can only be settled by an examination of the original speci- 
mens. The conclusions reached from an examination of some of 
these are presented herewith, together with descriptions of several 
new species sent to me from time to time by various correspondents. 
Luzula arcuata major Hook. Fl. Bor. Amer. 2: 189. 1840. 
The type specimens of this collected by Tolmie on Mount Rainier is at Kew. 
It is identical with Juncoides piperi Coville. 
Alsine viridula sp. nov. 
Perennial, forming dense, prostrate, circular mats, 10 to 20 cm. broad; herb- 
age entirely glabrous except for a few ciliate hairs at the bases of the leaves; 
stems 5 to 10 cm. long, green, scarcely shining, branched; leaves ovate, plane, 
short-acuminate, dull, rather thin, but the veins obscure, 5 to 15 mm. long, 
nearly as long as the internodes, each abruptly narrowed into a short petiole, 
this bearing a few long hairs; flowers solitary in the axils, the pedicels mostly 
shorter than the leaves; sepals oblong-ovate, acutish, green, with a narrow, 
white, scarious margin, thin, 3-nerved, 2 to 2.5 mm. long; petals none; pods 
green, ovoid, not longer than the calyx; seeds dark brown, 0.5 mm. long. 
Type in the U. S. National Herbarium, no. 249940, collected on ridges south 
from Wiessners Peak, Idaho, July 28, 1895, by J. B. Leiberg (no. 1396). 
Growing in springy places in canyons, altitude 1,700 meters. Also collected 
along rivulets in woods, altitude 1,400 meters, in the Blue Mountains, Columbia 
County, Washington, July, 1896, by C. V. Piper (no, 2328). 
This species is a close ally of Alsine crispa (Cham. & Schlecht.) Holzinger,’ 
but that has a much looser habit, with internodes much exceeding the leaves, 
shining stems, less distinctly petioled leaves lacking the basal hairs, pedicels 
mostly exceeding the leaves, and thick, lanceolate sepals which are shorter 
than the capsule and when mature 3-ribbed. The seeds, too, are larger and 
paler. 
Alsine crispa also occurs in Idaho and in the Blue Mountains, but it remains 
perfectly true in its characters. 
Oreobroma longipetala sp. nov. 
Root stout, simple or branched, about 6 cm. long; leaves linear, 2 to 3 cm. 
long, about 2 mm. wide; flowering stems simple or bearing 1 to 3 erect branches, 
2 Alsine crispa (Cham. & Schlecht.) Holzinger, Contr. U. S. Nat. Herb. 3: 
216. 1895. 
Stellaria crispa Cham. & Schlecht. Linnaea 1: 51. 1826. 
61364? —13——2 207 
