406 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Flowers white or rose-oolored, in nodding spikes. 



Herbage viscid^landular 4. iS. boothii. 



Herbage puberulent, not glandular 5. S. alyssoides. 



1. Sphaerostdgma contortxiin (Dougl.) Walp. Repert. 2: 78. 1843. 

 Oenothera contoiia 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 ex.\mixed: 1. Form with stalked pods: Wilson Creek, Sandberg d' Leihenj 

 263: without locality, Vasey in 1889; Pasco, Pijyer 2965a: North Yakima, Henderson, 

 May 27, 1892. 



2. Fonn with pods sessile: Pasco, Pi/wr 2965b; west Klickitat County, SwArs^o// 555, 85; 

 Bingen, Suksdorf22\\\ Ilia. Lake dt Hull. 



Zonal distribition: Upper Sonoran. 



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

 is typical 5. contorUim, 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. Sphaerostigina andinum (Nutt.) 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: Washington and Montana to Nevada and Utah. 



Specimens e.xamined: Wenache, Whited 86; Ellensburg, Piper 2675; Elmer 429; 

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

 tat Valley. Hoxrdl 1503: Pasco, Piper 2994; Spangle, Piper, June, 1899; Walla Walla 

 region, Brandegee 786: without locality, Va^ey 235; Coulee City, Piper 3907, 3908; Ellens- 

 burg, Cotton 865. 



Zonal distribution: Upper Sonoran. 



3. Sphaerostigma hilgardi (Greene) Small, Bull. Torr. Club 23: 188. 1896. 

 Oenothera hilgardi Greene, Bull. Torr. Club 10: 41. 1883. 



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

 lected by Hilgard. 



Range: Eastern Washington. 



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

 North Yakima, Elmer 1082; Crab and Wilson creek*, Sandberg <& Leiberg 290; Sprague, 

 Sandberg cfr Leiberg 145; between Coulee City and WaterviJle, Spillman, May 27, 1898; 

 Ellensburg, 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. 

 Wenothera pyginaea 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 Is\&nd, Sandberg d; Leiberg 441; Snake River, W^alla Walla 

 region, Brandegee 785; Tweedy, June, 1883. 



Zonal distribution: Upper Sonoran. 



6. Sphaerostigina alyssoides minutiflorum (S. Wats.) Small, Bull. Torr. Club 23: 

 192. 1890. 

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

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



