406 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Flowers white or rose-colored, in nodding spikes. 



Herbage viscid-glandular 4. S. booth ii. 



Herbage puberuleut, not glandular 5. 5. alyssoides. 



1. Sphaerostigma contortum (Dougl.) Walp. Repert. 2: 78. 1843. 

 Oenothera contorta Dougl; Hook. Fl. Bor. Am. 1: 214. 1833. 



Type locality: "Sandy barren soil on the interior banks of the Columbia River." 

 Collected by Douglas. 



Specimens examined: 1. Form with stalked pods: Wilson Creek, Sandberg cfc Leiben/ 

 263; without locality, Vasey in 1889; Pasco, Piper 296.5a; North Yakima, Henderson, 

 May 27, 1892. 



2. Form with pods .sessile: Pasco, Piper 2965b; west Klickitat County, Siihsdorf 555, 85; 

 Bingen, Suhsdorf 2311 ; Ilia, LaJce cfc Hull. 



Zonal distribution: Upper Sonoran. 



The two forms above listed are probably distinct, but it remains to be determined which 

 is typical S. contortum, as the distinguishing character does not appear in the original 

 description. The sessile-podded form was later described as S. strigulosa Fisch. & Mey. 

 from California. The whole group is in need of critical study. 



2. Sphaerostigma andinum (Xutt.) Walp. Repert. 2: 79. 1843. 

 Oenothera andina Nutt.; Torr. & Gr. Fl. 1: 512. 1840. 



Type locality: "Dry plains in the Rocky Mountains, near Black-Foot River." Col- 

 lected by Nuttall. 



Range: Wa.shington and Montana to Nevada and Utah. 



Specimens examined: Wenache, Whited 86; EUensburg, Piper 2675; Elmer 429; 

 North Yakima, Henderson, May, 1892; Klickitat County, SuJcsdorf 311; Flett 1230; Klicki- 

 tat Valley, Howell 1503; Pasco, Piper 2994; Spangle, Piper, June, 1899; Walla Walla 

 region, BtYindegee 786: without locality, U^.^ey 235: Coulee City, Pi/^er 3907, 3908: Ellens- 

 burg, Cotton 865. 



Zonal distribution: Upper Sonoran. 



3. Sphaerostigma hilgardi (Greene) Small, Bull. Torr. Clul) 23: 188. 1S96. 

 Oinothira hdyardl Greene, Bull. Torr. Club 10: 41. 1883. 



Type locality: "On moist alkaline soil of the Klickitat Swale," Washington. Col- 

 lected by Hilgard. 



Range: Eastern W^ashington. 



Specimens examined: Wenache, Whited 1093; EUensburg, Piper, May 20, 1897; 

 North Yakima, Elmer 1082; Crab and Wilson creeks, Sandberg & Leiberg 290; Sprague, 

 Sandberg cfc Leiberg 145; l)etween Coulee City and Waterville, Spillman, May 27, 1896; 

 EUensburg, Cotton 865. 



Zonal Distribution: Upper Sonoran. 



4. Sphaerostigma boothii (Dougl.) Walp. Rep. 2: 77. 1843. 

 Oenothera boothii Dougl.; Hook. Fl. Bor. Am. 1: 213. 1833. 

 ^Oenothera pygmaea Dougl.; Hook. Fl. Bor. Am. 1: 213. 1833. 



Type locality: "On low exposed gravelly hills, near the branches of Lewis and Clark's 

 River, lat. 46° north." Collected by Douglas. 



Range: Washington to California and Nevada. 



Specimens examined: Rock Island, Sandberg d- Leiberg 441; Snake River, Walla Walla 

 region, Brandegee 785; Troeedy, June, 1883. 



Zonal distribution: Upper Sonoran. 



5. Sphaerostigma alyssoides minutiflorum (S. Wats.) Small, Bull. Torr. Club 23: 



192. 1896. 

 Oenothera alyssoides minutijlora S. Wats. Proc. Am. Acad. 8: 591. 1873. 

 Type locality: "Northern Nevada and about Salt Lake, Utah." 



