WOOTON AND STANDLEY—FLORA OF NEW MEXICO, 285 
Roripa palustris Besser, Enum. Pl. 27. 1821. 
Type LocaLity: European, 
Rance: British America to California, New Mexico, and North Carolina; also in 
Europe and Asia. 
New Mexico: Alamo Viejo (Jfearns 12), 
8. Radicula obtusa (Nutt.) Greene, Leaflets 1: 113. 1905. , 
Nasturtium obtusum Nutt.; Torr. & Gray, Fl. N. Amer. 1: 74. 1838. 
Type Locauiry: ‘Banks of the Mississippi.” 
Ranae: British Columbia to California, Michigan, and Texas, 
New Mexico: San Juan Valley; Inscription Rock; Ramah; Mogollon Mountains; 
White and Sacramento mountains; Mesilla Valley. Wet ground. 
25. SCHOENOCRAMBE Greene. 
Perennial glabrous green herb with long horizontal rootstocks; stems simple or 
branched, slender; cauline leaves linear, mostly entire; flowers rather large, yellow; 
siliques 3 to 6 cm, long, slender, terete, suberect, on short spreading pedicels. 
1. Schoenocrambe linifolia (Nutt.) Greene, Pittonia 3: 127. 1896. 
Nasturtium linifolium Nutt. Journ. Acad. Phila. 7: 12. 1834. 
Irysimum linifolium Jones, Proc. Calif. Acad. II. 5: 622. 1895. 
Type Locauity: ‘‘Head of Salmon River, in dry soils,’’ Montana, 
RANGE: Montana to British Columbia, Utah, and New Mexico. 
New Mexico: Carrizo Mountains ( Matthews). 
26. SISYMBRIUM L. 
An anomalous remnant which needs further study and generic segregation. The 
species here assembled show little relationship to each other. 
KEY TO THE SPECIES. 
Pubescence of branched hairs. ........----.--.- wee eee eee cece eee 1. S, diffusum, 
Pubescence of unbranched hairs, or none. 
Plants pubescent; flowers bright yellow; pedicels erect........ 3. S. officinale 
leiocarpum. 
Plants glabrous; flowers white or ochroleucous; pedicels spread- 
ing or ascending. 
Plants glaucous; leaves entire...... wee ee eee eee eee e reese 2. S. vaseyi. 
Plants green; leaves pinnatifid......--..--------------- 4, S. altissimum. 
1. Sisymbrium diffusum ‘A. Gray, Pl. Wright. 1: 8. 1852. 
Type tocauity: ‘‘Pass of the Limpia, in crevices of rocks on the mountains,” 
Texas. Type collected by Wright (no. 10). 
Rance: Western Texas to California, south into Mexico. 
New Mexico: Hop Canyon; Mangas Springs; Mogollon Mountains; Black Range; 
Florida Mountains; Organ Mountains. Dry hills and canyons, in the Upper Sonoran 
Zone. 
2. Sisymbrium vaseyi S. Wats. in A. Gray, Syn. Fl. 17: 138. 1895. 
Thelypodium vaseyi Coulter, Contr. U. 8. Nat. Herb. 1: 30. 1890, in part. 
Type Locatity: Mountains west of Las Vegas, New Mexico. Type collected by 
G. R. Vasey in 1881. 
RANGE: Mountains of New Mexico. 
New Mexico: Santa Fe and Las Vegas mountains: Sandia Mountains; Graham; 
White and Sacramento mountains. Transition Zone. 
A handsome plant of the open parks at higher elevations in the mountains. Its 
masses of white flowers make it very attractive, especially when, as often happens, it 
is combined with brighter colored flowers, 
