12 l Charles V. Piper. 
131. Epilobium fastigiatum (Nutt.) Piper, l. c., p. 404. 
Epilobium affine fastigiatum Nutt.; Torr. & Gr., Fl., I, 489; 1840. — 
Epilobium glaberrimum latifolium Barbey in Brewer & Wats. Bot. Cal., I, 
290; 1876. — Epilobium glaberrimum fastigiatum Trelease, Rep. Mo. Bot. 
Gard., II, 105; 1891. — Washington to California and Utah. 
132. Epilobium fastigiatum var. glaberrimum (Barbey) Piper, L. c., p. 404. 
Epilobium glaberrimum Barbey in Brewer € Wats., Bot. Cal. I, 220; 
1876. — Washington to California and Nevada. 
133. Epilobium mirabile Trelease apud Piper, l. c., p. 404. 
Turioniferous; stems rather slender, terete, crisp-puhesc ent, ascending 
from near the base, about a foot high, with rather short strict branches; 
leaves scarcely 25 mm long, somewhat ascending, broadly ovate-lanceo- 
late, obtuse, remotely very low denticulate, rounded at base and very 
short-petioled, rather thick, minutely crisp-puberulent or at length sub- 
glabrescent; inflorescence somewhat glandular; flowers suberect, crowded 
at summit; petals about 5 mm long, pale; capsules short-stalked, about 
40 mm long, curved, fusiform; seeds as in E. paniculatum, the at first 
very white ample coma soon falling and at length dingy. — Meadows 
at 1500 meters altitude, in the Olympic Mountains, Washington (Piper, 
August, 1895, no. 2344). — A very peculiar plant, with the seed and 
foliage characters of E. minutum, but exaggerated, and the turions of 
the delicatum section, in which in stem and pubescence characters it falls 
near E. leptocarpum. 
134. Taraxia tanacetifolia (Torr. & Gr.) Piper, |. c., p. 405. 
Oenothera tanacetifolia Torr. & Gr., Pacif, R. Rep., II, 121, pl. 4: 1854. 
Taraxia longiflora Nutt.; Small, Bull. Torr. Club, XXIII, 185; 1896. — 
Oenothera nuttallii Torr. & Gr., FL, I, 506: 1840, not Sweet, 1830. — 
Washington to Nevada and California. 
135. Oenothera biennis var. strigosa (Rydberg) Piper, l. c., p. 407. 
Onagra strigosa Rydberg, Mem. N. Y. Bot. Gard., I, 278; 1900. — 
Oenothera biennis canescens Torr. & Gr. Fl, I, 499; 1840, not Oenothera 
canescens Torr. & Frem. in Frem. Rep. 315; 1845. — Washington to 
Montana and Colorado. 
136. Pachylophus marginatus (Nutt.) Piper, l. c., p. 408. 
Oenothera marginata Nutt.; Torr. & Gr., Fl, I, 500; 1840. 
137. Pachylophus canescens Piper, |. c., p. 409. 
Acaulescent or nearly so, cespitose, the whole plant canescent with 
a fine appressed pubescence: root stout and woody, becoming 30 cm 
long or more; leaves rather numerous, pale green, oblanceolate, repandly 
dentate or subentire, obtuse or acute, each atienuate into a petiole with 
margins narrower than the broad white midrib; calyx canescent, the 
tube very narrow, 5 to 6 em long, twice the length of the lanceolate 
attenuate lobes: petals broadly obovate, pink, 2 to 3 cm long; pods 2 
to 3 cm long, linear-oblong, attenuate into a stout beak, canescent like 
the leaves. 
This species is distinguishable from the others of the genus only 
by the character of the pubescence. 
