426 PATAGONIAN EXPEDITIONS : BOTANY. 



(Widely distributed, about habitations.) Magellan, N. and E. Fuegia. 

 (Dusen.) 



2. LEPIDIUM BONARIENSE Linn. 1753. (L. pubescens Desv., 1814.) 



Stem and pedicels villous. Upper branches surpassing the stem. 

 Leaves glabrous, pinnatifid; the lobes linear, few-toothed. Flowers 

 minute. Silicic subelliptical, retuse-emarginate, its valves carinate, wing- 

 less. Style very short. 



Of wide range through Brazil and N. Patagon. ; S. Patagon., by Rio 

 Sta. Cruz ; Magellan. Varying much : form typica is tall, with spicate 

 flowers ; form salinicola, dwarf, with lax racemes. 



3- L. RACEMOSUM Gris. 



Diffuse annual, stem puberulous. Leaves glabrous, pinnatisect, with 

 few pairs of segments, these oblong-linear, acutish ; in the lower leaves 

 with a short anterior tooth. Racemes dense, the pedicels equalling the 

 silicle. Upper flowers apetalous, with 2 stamens. Silicle oval-orbicular, 

 emarginate. Stigma sessile. Valves at length reticulate. 



Magellan, at Oazy Harbor, and at Punta Arenas. Brunswick Penins., 

 about the bays and capes. (Lechler). 



4. L. RUDERALE Linn. 



Radical leaves pinnatifid. Cauline linear, entire, or nearly so; all 

 glabrous. Flowers minute, usually apetalous, 2-staminate, with minute 

 style on the small, roundish, emarginate silicle. (Fig. in Brit & Br. ii. 

 in.) 



(Eur. & N. Amer.), Patagon., by R. Sta. Cruz, not common, a low and 

 weak form ; and near Rio Negro. 



5. L. SATIVUM Linn. Garden-cress. 



Leaves variously divided and incised, the upper being smaller and often 

 entire, all bright green. Silicles orbiculate, 4 by 2 mm., emarginate, the 

 valves navicular, winged. Styles very short. 



(Eur. and N. Am. in waste places and cultivated) ; S. Patagon., in 

 fields near R. Sta. Cruz. 



