304 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



HUTCHINSIA. 



1. Hutchinsia procumbens (L.) DC. Desv. Journ. Bot. 3: 168. 1814. 



Lepidium procumbens L. Sp. PI. 2: 643. 1753. 



Capsella eUiptica C. A. Meyer in Ledeb. Fl. Alt. 3: 199. 1831. 



Capsdla procumbens Fries, Novit. Fl. Suec. Mant. 1: 14. 1832. 



Hymendohus divaricaius Nutt.; Torr. & Gr. Fl. 1: 117. 1838. 



Hymenolobus erectus Nutt. loc. cit. 



Type locality: "Habitat Monspelii." 



Range: British Columbia to Labrador and southward. Europe. Asia. Australia. 



Specimens examined: Whidby Island, Gardner 26; Ellensburg, Wkited, April, 1897; 

 Rock Lake, Sandberg cfc Leiberg 117; Sunnyside, Cotton 315; Coulee City, Piper 3890; Lin- 

 coln County, Henderson 4382; Spokane, Piper 2944. 



Zonal distribution: Arid Transition and Upper Sonoran. 



CAMELINA. 



Glabrous or nearly so; pods 6 to 8 mm. long , 1. C. sativa. 



Pulicsccnt at least l)elow ; pods 4 to 6 mm. long 2- C microcarpa. 



1. Camelina microcarpa Andrcz. in DC. Syst. 2: 517. 1818. 

 Camelina sylve-slris Wallr. Sched. Crit. 347. 1822. 



Type ukality: European. 



Specimens examined: Ellensburg, Whited 448; Wawawai, Piper 1475; Frontier, Krea- 

 ger 465. 



2. Camelina sativa Crantz, Stirp. Austr. 1: 18. 1769. 

 Type i>ocality: Austria. 



Specimens examined: Wilbur, Henderson, July, 1892. 



LEPIDIUM. Peppergbass. 



Apex of the capsules bidentatc, tiie valves strongly reticulated 6. L. dictyotum. 



Apex of the capsules merely emarginate, the valves not reticulated. 



Capsules 4 to 5 mm. long, shining 5. L. nitidum. 



Capsules 2 to 3 mm. long, not shining. 

 Petals wanting or very minute. 



Pods glabrous 1. L. apetalum. 



Pods puberulent 2. L. lasiocarpum. 



Petals present. 



Basal leaves pinnately parted, pubescent 3. L. menziesii. 



Basal leaves dentate, glabrous 4. L. m,edium. 



1. Lepidium apetalimi Willd. Sp. PI. 3': 439. 1800. 

 Lepidium elongatum Rydberg, Bull. Torr. Club 29: 234. 1902. 

 Type locality: "In Siberia." 



Range: British Columbia to New England and southward. Asia. 



Specimens examined: Wenache, Whited 1113; Yakima, Hender,son, May, 1892; Pasco, 

 Hindshaw 13; west Klickitat County, Suksdorf 1942; Pasco, Piper, May, 1899; Spiague, 

 Sandberg cfc Leiberg 175; Cascade Mountains to Colville, latitude 49°, Lyall in 1860; Lake 

 Chelan, Elmer, September, 1897; Coulee City, Piper 3878, Walla Walla, Brandegee 645; 

 Almota, Piper 2788 ; Wawawai, Piper, June, 1894, 3064; Pullman, Piper, July, 1894, 3507; 

 Clarks Springs, Kreager 572; Almota, Elmer 21. 



Zonal distribution: Arid Transition and Upper Sonoran. 



2. Lepidium lasiocarpum Nutt.; Torr. & Or. Fl. 1: 115. 1838. 



Type locality: "Near St. Barbara, Upper California." Collected by Nuttall. 

 Range: Washington to California and Texas. 



