[Vol. 8 
204 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
in Gay, Fl. Chilena 1: 161. 1845; Gilg & Muschler, Engl. Bot. 
Jahrb. 42: 466. 1909. 
V. mendocina Phil. Linnaea 33: 12. 1864. 
V. andicola Gill mss.; Ball, Jour. Linn. Soc. 21: 212. 1880. 
Alyssum Urbanianum Muschler, Engl. Bot. Jahrb. 40: 274. 
1908 
A. bolivense Muschler, Engl. Bot. Jahrb. 40: 275. 1908. 
Perennial, densely stellate-pubescent throughout, stellae many- 
rayed, rays forked, coalescing at the base; stems decumbent or 
prostrate, 5-12 em. long, unbranched; terminal bud remaining 
undeveloped; radical leaves 2-3 cm. long, narrowly oblanceo- 
late, rarely over 5 mm. wide, entire or repand, very gradually 
narrowed to a slender petiole; cauline leaves narrowly oblanceo- 
late, often rather numerous; petals yellow, obovate, about 1 cm. 
long; filaments linear; fruiting inflorescence rather short, lax; 
pedicels straight or often sigmoid, 1-2 em. long; pods erect to 
horizontal, sessile, densely stellate-pubescent, short-ellipsoid, 
not compressed, 7-9 mm. long; styles about 4 mm. long, stig- 
mas capitate; septum strongly nerved, areolae scarcely tortuous; 
ovules about 5 in each cell, funiculi long and slender, attached 
to the septum for about one-half their lengths. 
Distribution: northern Argentine, adjacent Chile, and Bolivia. 
Specimen examined: 
Argentine: Cerro Negro, Catamarca, Sept. 2, 1916, Jorgensen 
1062 (U. S. Nat. Herb. and Mo. Bot. Gard. Herb.). 
Bolivia: Escayache bei Tarija, 3600 M., austro-Bolivia, Feb. 1, 
1904, K. Fiebig 3034 (Gray Herb.); Puna Patanca, 3700 M., 
Jan. 8, 1904, K. Fiebig 2619 (Gray Herb.). 
This species, although curiously isolated from its fellows, 
bears all the characteristics of a true member of this genus and 
seems more nearly related to certain species of the Rocky Moun- 
tains than to L. montevidensis of Uruguay. Kurtz observes 
that this plant grows in dry and especially in calcareous habitats. 
The flowers are said to be fragrant. 
37. L. valida Greene, Pittonia 4:68. 1899; Wooton & Stand- 
ley, Contr. U. S. Nat. Herb. 19: 275. 1915. 
Densely silvery stellate throughout; stems numerous, stout, 
decumbent, 12-15 cm. long, axillary to the outer leaves of a 
