296 CONTRIBUTIONS’ FROM THE NATIONAL HERBARIUM, 
STREPTANTHUS. 
1. Streptanthus longirostris S. Wats. Proc. Am. Acad. 25: 127. 1890. 
Arabis longirostris S. Wats. Bot. King Explor. 17: pl. 2. 1871. 
Type Locatity: “Growing in alkaline soil at the Steamboat Springs near Washoe City, 
about Humboldt Lake, Nevada, and on Stansbury Island in Salt Lake.” 
Rance: Washington to Nevada and Utah. 
SPECIMENS EXAMINED: Pasco, Henderson 2378; without locality, Brandegee 629. 
ZONAL DISTRIBUTION: Upper Sonoran. 
RORIPA. 
Flowers white; leaves pinnately divided ............................. 1. R. nasturtium. 
Flowers yellow; leaves various, mostly pinnate. 
Plants perennial by rootstocks. 
Pods glabrous or nearlyso .......-.-.....2. 22. -2-.-2-22-- 2. R. sinuata. 
Pods not glabrous. 
Pods pappilose-puberulent .............-.-..--.-.-.--- 3. R. calyeina. 
Pods soft pubescent, short-pediceled. ...-.............. 4. R. columbiae. 
Plants annual or biennial, without rootstocks. 
Pedicels short, 2 to 4 mm. long; stems diffuse. 
Pods curved; leaf-lobes acute.......................... 5. R. curvisiliqua. 
Pods straight; leaf-lobes obtuse -.......-.-.-2-. 22-0 0.. 6. R. obtusa. 
Pedicels longer, 6 to 8 mm. long; stems erect. 
Pods oval or globose; stems hispid... ...--- 2-222... 7. R. hispida. 
Pods oblong; stems glabrous or nearly so. 
Pods 4 to 8 mm. long .........-.-.....-.-.-.-.-.. 8. R. palustris. 
Pods 8 to 12 mm. long ..........-.-.-.-.--2---2--. 9. R. pacifica. 
1. Roripa nasturtium (L.) Rusby, Mem. Torr. Club 3°: 5. 1893. WaTER CRESS. 
Sisymbrium nasturtium L. Sp. Pl. 2: 657. 1753. 
Nasturtium officinale R. Br. in Ait. Hort. Kew. ed. 2. 4: 110. 1812. 
Type Locaity: ‘Habitat in Europa & America septentrionali ad fontes.”’ 
SPECIMENS EXAMINED: Tacoma, /lett6; Wawawai, Elmer 765; Hull 477; Clarks Springs, 
Kreager 124; Colville, Kreager 523. 
2. Roripa sinuata (Nutt.) A. S. Hitchcock, Spring Fl. Manhat. 18. 1894. 
Nasturtium sinuatum Nutt.; Torr. & Gr. Fl. 1: 73. 1838. 
Tyee LocaLity: ‘ Banks of the Oregon and its tributaries.”’ Collected by Nuttall. 
Rance: Washington to Saskatchewan, Arkansas, and New Mexico. 
SPECIMENS EXAMINED: West Klickitat County, Suksdorf 2103; Almota, Piper 2653, 2654. 
ZONAL DISTRIBUTION: Upper Sonoran. 
8. Roripa calycina (Engelm.) Rydberg, Mem. N. Y. Bot. Gard. 1: 175. 1900. 
Nasturtium calycinum Engelm. in Warren, Prelim. Rep. 156. 1855-7. 
Type Loca.ity: ‘Sandy bottoms of Yellowstone River; Fort Sarpy to Fort Union.” 
Rance: Washington and Oregon to Montana. . 
SPECIMENS EXAMINED: Without locality, Sandberg & Leiberg in 1892. 
4: Roripa columbiae Suksdorf; Howell, Fl. N. W. Am. 1: 40. 1897. 
Nasturtium sinuatum columbiae Suksdorf; Robinson in Gray, Syn. Fl. 1!: 147. 1895. 
Nasturtium columbiae Suksdorf, Deutsch. Bot. Monat. 16: 211. 1898. 
Type LocaLiry: ‘“ Low gravelly banks of the Columbia River near Bingen,’’ Washington. 
Rance: Oregon and Washington on gravelly river banks. 
SPECIMENS EXAMINED: Near Bingen, Suksdorf 952. 
