PIPER—-FLORA OF THE STATE OF WASHINGTON. 447 
The illustration in the Flora de Serres seems to be exactly the plant common in the Bitter- 
root Mountains, of Idaho, so far as one may judge from the flowering plant alone. The 
Cascade Mountains plant (D. viviparum) differs only in having the leaves obscurely crenate 
instead of entire or denticulate. The capsule characters are the same in both 
DOUGLASIA. 
Leaves canescent with forked hairs...........-.------- Lecce ee ee ee ee eee 1. D. dentata. 
Leaves glabrous or nearly so..........-.------------------------ .... 2. D. laevigata. 
1. Douglasia dentata 8. Wats. Proc. Am. Acad. 17: 375. 1882. 
Douglasia nivalis dentata A. Gray, Syn. Fl. ed. 2. 2 ': 399. 1886. 
Androsace dieckiana Haussk. Mitt. des Bot. Ver. fiir gesammt-Thuringen 1890: 22. 1890. 
Type Locauity: “On a dry ridge above Peshastin Cafion,’’ Washington. Collected by 
Watson. 
RanGE: In the Wenache region, Washington. 
SPECIMENS EXAMINED: Mount Stuart, Elmer 1230; Sandberg & Leiberg 545; Wenache 
Mountains, Whited in 1896; Wenache Region, Brandegee 952; Yakima Region, Brandegee; 
Peshastin Canyon, Watson 264; Kittitas County, Henderson 2365; Clealum, Henderson in 
1892; without locality, Vasey in 1889. 
2. Douglasia laevigata A. Gray, Proc. Am. Acad. 16: 105. 1880. 
Type LocaLity: Mount Hood, Oregon. Collected by Howell. 
Rance: Washington and Oregon. 
SPECIMENS EXAMINED: Olympic Mountains, Piper, August, 1895; Flett 804; Henderson 
July, 1890, 2366; J. M. Grant in 1889; Elmer 2801; Goat Mountains, Allen 187. 
ZONAL DISTRIBUTION: Hudsonian. 
Dove .asia NIVALIS Lindl., listed by Suksdorf, is not known west of the Rocky Mountains. 
GLAUX. 
1. Glaux maritima L. Sp. Pl. 1: 207. 1753. 
Type LocaLity: Europe. 
Rance: Sea coasts, California to Alaska and New England to Greenland. Europe. 
Asia. 
SPECIMENS EXAMINED: Westport, Henderson, June 25, 1892; Whidby Island, Gardner 
199; Seattle, Piper; Whatcom County, Suksdorf 989; without locality, Cooper. 
The last three specimens are referable to @. maritima obtusifolia Fernald, differing from 
the species in its more erect habit, simple or sparingly branched stems, and broader leaves. 
ZONAL DISTRIBUTION: Humid Transition. 
CENTUNCULUS. 
1. Centunculus minimus L. 5p. Pl. 1: 116. 1758. 
Type Locauity: “Habitat in Italiae, Galliae, Scaniae arenosis.” 
Rance: Washington to Illinois, south to Florida and Texas. South America. Europe. 
SPECIMENS EXAMINED: Falcon Valley, Suksdorf, June, 1880; Spokane, Piper 2765; 
Silver Lake, Henderson, July 13, 1892; Lake *alispel, Kreager 322. 
ZONAL DISTRIBUTION: Arid Transition. 
TRIENTALIS. Srar FLOWER. 
Leaves crowded near the summit of the stem........-.---.------------- 1. T. latifolia. 
Leaves scattered along the stem; bog plant............-.--------------- 2. 7. arctica, 
1. Trientalis latifolia Hook. FI. Bor. Am. 2: 121. 1838. 
Prientalis europaea latifolia T Torr. Proc. Am. Acad. 4: 118. 1860. 
a Rhodora 4: 215. 1902. 
