424 PATAGONIAN EXPEDITIONS I BOTANY. 



e2. Calyx closed, saccate or not. Silicic inflated, its valves cartilaginous ; 

 basi-attenuate. Seeds flat. 14. Lesquerella (Vesicaria), p. 439. 



c2. Surface cells of the septum transversely parted. Flowers white to purple. 



d\ . No glandular hairs or tubercles. No fibrous layer on the septum. Fruit ovate 

 to linear, with convex valves and capitate stigma. Seeds 2-ranked. Radicle 

 dorsal (?). 21. Bray a, p. 451. 



d2. Glandular hairs or tubercles usual. Hairs usually branched. Radicle dorsal. 

 Stigma with 2 erect lobes. Siliques subcylindric ; valves I -nerved. Seeds 

 i-ranked. 22. Hesperis, p. 453. 



1. MENONVILLEA DC. 



Perennial to suffruticose, smooth plants, with linear or pinnatifid leaves, 

 rather fleshy, and racemose flowers. Sepals long, erect, saccate. Petals 

 linear, white or dull red. Honey-glands upright, scale-like. Silicle on a 

 gynophore, dorsally compressed, with broad lateral wings, and long style. 

 Mericarps i -seeded. Embryo incumbent. 



Species 4 in Chili and Peru. Closely allied to Decaptera and Hex- 

 aptera. 



M. PATAGONICA SpCg. 



Low, hispid, green annual, with simple hairs ; branching from the base. 

 Leaves pinnatifid. Racemes dense-corymbiform, elongating in maturity ; 

 rachis straight or subflexuose. Flowers small, white. Silicle glabrous, 

 its valves suborbicular, subconvex ventrally, concave dorsally, having a 

 mid-nerve, otherwise smooth. IVing broad, rigid, repandulous at apex 

 and emarginate at base. 



Chubut, in dry hills between Teka-choique and Carren-leofu. 



2. HEXAPTERA Hook. 



Herbs or undershrubs, with radical and cauline, entire or pinnatifid, 

 subspatulate leaves, and short, bractless corymbs of whitish flowers. 

 Sepals equal at the base. The longer stamens sometimes connate in 

 pairs. Silique rather large, dorsally compressed, 6-winged ; the cells 

 i -seeded. Style short. Stigma capitate. Seeds not margined. Coty- 

 ledons plane. 



Species 7, Chili and Patagon. 



i. H. CUNEATA Gill. & Hook. 



Slightly hairy. Leaves with slender petioles, apically 3-toothed, only 

 i -nerved. Stems cespitose, ultimately erect. 



