[Vel. 8 
208 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
shorter style. It is apparently a more slender plant than the 
preceding species. 
39a. Var. nudicaulis Payson.: 
Perennial, silvery stellate throughout; caudex much branched, 
stems erect, 1—4 cm. long, naked ; terminal 
bud apparently remaining undeveloped; 
radical leaves linear to linear-oblanceo- 
late, mostly less than 1 em. long; petals 
yellow; fruiting inflorescence subcorymbi- 
form; pods sessile, stellate, about 4 mm. 
long, sometimes compressed at the apex; 
styles 1-2 mm. long; ovules4—5 in each cell. 
Distribution: northern Arizona. 
Specimens examined: 
Arizona: Buckskin Mountains, June 
19, 1890, Jones (U. S. Nat. Herb. TYPE). 
: A most interesting plant resembling su- 
Fig. 25. L. arizonic 
nudicauls, Habit ors ig a < perficially some of the perennial, scapose 
2$. Trichomes x 25. Drabas, but undoubtedly closely allied 
to L. arizonica. The leafless stems are, of course, its distinguish- 
ing feature. 
40. L. alpina (Nutt.) Wats. Proc. Am. Acad. 23: 251. 1888 ; 
Wats. in Gray, Syn. Fl. N. Am. 1': 117. 1895; Rydb. Mem. 
N. Y. Bot. Gard. 1: 179. 1900; Rydb. Fl. Colo. 155. 1906; 
Nelson in Coulter & Nelson, Mámtal Cent. Rocky Mountains, 
219. 1909; Nelson, Spring Fl. Intermountain States, 65. 1912; 
Clements & Clements, Rocky Mountain Flowers, 25. 1914; 
Rydb. Fl. Rocky Mountains, 332. 1917. 
Vesicaria alpina Nutt. in Torr. & Gray, Fl. N. Am. 1: 102. 
1838; Walp. Rep. 1: 141. 1842; Dietr. Gen. Pl. 3: 638. 1843 : 
Hooker's London Jour. Bot. 6: 70. 1847; Coulter, Manual 
Rocky Mountain Region, 25. 1885. 
Alyssum alpinum Kuntze, Rev. Gen. Pl. 2: 931. 1891. 
Lesquerella parvula Greene, Pittonia 4: 308. 1901; Rydb. 
Fl. Colo. 155. 1906; Rydb. Fl. Rocky Mountains, 332. 1917. 
Cespitose perennial, stellate throughout, stellae small, rays 
Pag: ag 1 arizonica Wats. var. nudicaulis ,var. nov., perennis s humilis; cauli- 
bus ongis, nudatis; siliculis ovatis, stellato pubescentibus, sessilibus.— 
Collected in E ud kskin Mountains, Arizona, June 19, 1890, M. E. Jones (U. S. 
