RyDBERG: Rocky MOUNTAIN FLORA 65 
- It resembles somewhat E. Palmeri, but the flowers are nearly 
twice as large. 
Ipauo: Moist places, valley of Mud Lake, Kootenai County, 
July 25, 1892, Sandberg, MacDougal & Heller 737 (type, in herb. 
N. Y. Bot. Gard.). 
Montana: Bozeman, July 22, 1895, Rydberg 2720. 
Gayophytum Helleri Rydb. sp. nov. 
Annual; stem branched with nearly erect, strict branches, 
1-3 dm. high, more or less pubescent with spreading hairs; leaves 
linear, 0.5-2 cm. long, softly hirsutulous; pedicels very short, 
even in fruit scarcely more than 1 mm. long; sepals and petals 
scarcely 1 mrh. long; capsules linear, erect, 8-10 mm. long, almost 
sessile, hirsutulous, not torulose; seeds about 1 mm. long, strigu- 
lose 
This resembles G. racemosum in habit and the pod, G. caesiun in 
pubescence and G. lasiospermum in the seeds. 
IpaHo: Forest, Nez Perces County, July 16, 1896, Heller 3433 
(type, in herb. N. Y. Bot. Gard.). 
Anogra leptophylla (Nutt.) Rydb. = 
Oenothera pallida leptophylla (Nutt.) T. & G. Fl. N. Am. 1: 495. 
1840. ; 
Oenothera leptophylla Nutt.; T. & G. FI. loc. cit., as a synonym. 
Oenothera longissima Rydb. sp. nov. 
A tall biennial; stem strict, 5-10 dm. high, densely canescent 
with short crinkled hairs as well as sparingly hirsute; leaves linear 
or narrowly linear-lanceolate, 1-1.5 dm. long, densely canescent, 
entire, acute at both ends, the lower short-petioled; spike rather 
lax: bracts linear-lanceolate, 2-5 cm. long; hypanthium tube 10- 
12 cm. long, densely canescent, only slightly widening upwards; 
sepals linear-lanceolate, about 4 cm. long; free tips about 4 mm. 
long; petals golden yellow, 4 cm. long; stamens and pistil of about 
the same length; capsule about 4 cm. long, densely canescent, 
slightly tapering upwards. 
This is related to O. macrosceles A. Gray and O. Jamesii T. & G., 
but differs from the former in being canescent instead of glabrous 
and in the smaller and narrower bracts, and from the latter in the 
longer, narrower and entire-margined leaves, and in being more 
canescent and less hirsute.. It grows on sandy river banks at an 
altitude of about 1,600 m. 
