408 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Conconully, Whited 1313; Spokane, Piper 2634; Henderson 2467; Nile, Henderson 2464 ; 
Sprague, Lake & Hull, August, 1892. 
ZONAL DISTRIBUTION: Arid Transition. 
2. Gayophytum diffusum Torr. & Gr. Fl. 1: 513. 1840. 
Tyre Locaity: “Rocky Mountains and plains of Oregon.” Collected by Nuttall. 
Rance: Washington and Idaho to California and Colorado. 
SPECIMENS EXAMINED: Wenache, Whited; along Methow River, Whited 220; Loomis- 
ton, Elmer 609; Lake Chelan, Lake & Hull, August, 1892; Klickitat River, Flet? 1405; 
Columbia River, latitude 46° to 49°, Lyall in 1860; without locality, Geyer 546. 
ZONAL DISTRIBUTION: Arid Transition. 
3. Gayophytum ramosissimum Torr. & Gr. Fl. 1: 513. 1840. 
Type Locatity: Rocky Mountains. Collected by Nuttall. 
Rance: Washington and Montana to California and Arizona. 
SPECIMENS EXAMINED: Mount Adams, Suksdorf 2310, 2297, 2296, 2295, 22: Henderson, 
August, 1892; Mount Rainier, Piper, August, 1895; Falcon Valley, Suksdorf 2257, 20, 21; 
North Yakima, Piper, June, 1897; Henderson, May, 1892; Wenache, Whited in 1896; 
Washtucna, Elmer 1042; Peshastin, Sandberg & Leiberg 528: Cascade Mountains, Piper, 
July, 1895; Nason City, Sandberg & Leiberg, July, 1893; without locality, Brandegee 781; 
Ritzville, Sandberg c& Leiberg 159; without locality, Vasey in 1889; Blue Mountains, 
Horner 293, 292; Walla Walla, Nuttall. 
ZONAL DistriBuTION: Arid Transition. 
Hooker @ recognizes two subspecies, but evidently his names have become interchanged 
in respect to the characters. 
Capsules short, the fruiting pedicels refracted .... 2.2... 22... (7, ramosissimum strictipes. 
Capsules longer, canescent, pedicels erect ia fruit............. @. ramosissimum deflerum. 
4. Gayophytum pumilum S. Wats. Proc. Am. Acad. 18: 193. 1883. 
Tyre Locatiry: “From San Bernardino County, California, to Washington Territory.” 
Rance: Washington to California. 
SPECIMENS EXAMINED: Mount Adams, Suksdorf 376; Falcon Valley, Suksdorf, June, 
(1881, and 19; Klickitat River, Suksdorf' 82; bars of Touchet River, Horner 286; near 
Salmon River, Horner 284; Blue Mountains, Horner 317, 119; Skamania County, Flett 
1236. 
ZONAL DISTRIBUTION: Canadian? 
“GAYOPHYTUM RACEMOsUM Torr. & Gr., and Gayorpuyrum cagsium Torr. & Gr. Both 
these names, which are considered to represent one species, appear in Suksdorf’s list. The 
type of the latter was collected in “Oregon, on dry open plains near Walla Walla,” by Nut- 
tall, possibly a Washington locality, but many of Nuttall’s plants so labelled were collected 
far to the southeast of Wallula (Old Fort Walla Walla). At any rate we have seen no Wash- 
ington specimens of the plant, those labelled @. racemosum being as a rule G, ramosissimum. 
PACHYLOPHUS. 
Leaves green, glabrous, except the villous margins.................... I P. marginatus. 
. , ’ i. 5 / 
Leaves canescent-puberulent on both sides..............-............ 2. 2. P. canescens. 
1. Pachylophus marginatus (Nutt.) 
Ocenothera marginata Nutt.; Torr. & Gr. Fl. 1: 500. 1840. 
Type Locatiry: ‘‘ Rocky Mountains in Upper California, about lat. 42°,” probably in 
Idaho. Collected by Nuttall. 
SPECIMENS EXAMINED: Steptoe Canyon, McKay. 
ZONAL DISTRIBUTION: : Upper Sonoran. 
a Lond. Journ. Bot. 6: 224. 1847. 
