CRUCIFEEiE 275 



6. L. Menziesii, DO. Syst. ii. 539 (1821): L. Calif ormcum, Nutt.; 

 T. & G. Fl. i. 115 (1838). Low aud diffuse, herbage light green, hispid- 

 puberiilent or glabrate; branches 3—6 in. long; racemes numerous, 

 rather nari'ow and dense: leaves of oblong outline, piunatifid, the seg- 

 ments usually 3-cleft or -toothed: petals 0: pods rounded, 1 — 1% lines 

 broad, glabrous, or around the margin more or less hispidulous, faintly 

 reticulate; teeth at the summit very short and obtuse; pedicels short, 

 ascending or spreading, often very little flattened. — Common, especially 

 by waysides and in hard clayey soil; late flowering, i. e., Apr. — June. 



* * Stouter and taller; pedicels terete. 



7. L. iiiteriiiediniii, Gray, PI. Wright, ii. 15 (1853). Erect, branching 

 above the middle, 3 3 — 1)^2 ft. high, puberulent or glabrous: lower leaves 

 12 in. long, toothed or pinnatifid; upi)er entire or only sparingly toothed, 

 oblanceolate or linear: petals 0: pods glabrous, rounded, 1 — If., lines 

 broad, very shortly winged, the obtuse teeth slightly divergent; pedicels 

 2 lines long. — Only occasionally met with in middle western California; 

 more common east of the Hierra; differing from the Atlantic coast L. 

 Virginicuiti in being more slender, and having incumbent cotyledons. 



8. L. Deaba, Linn. Sp. PI. ii. 645 ( 1753). Biennial or perennial, erect, 

 a foot high or taller, the several stems corymbosely branched at summit; 

 herbage canescently pubescent: lower leaves oblong-obovate, 1 — 3 in. 

 long, sparingly serrate or entire; cauline narrower, sagittate and clasping: 

 petals white, conspicuous: pods cordate, not winged, turgid, acutish. 

 tipped with a slender short style. — Native of Europe, representing a type 

 of Old World species widely different in appearance from all our native 

 kinds, and probably not congeneric with them. It is met with occasion- 

 ally in old fields at Berkeley and elsewhere in California. 



24. THYSANOCARPUS, Hooker (Lace-Pod). Erect and slender 

 sparingly branched annuals, with minute or rose-colored flowers, in 

 slender elongated racemes. Petals cuneate-obovate, or linear-oblong. 

 Stamens 6, tetradynamous, or sometimes 4 only. Pistil a compressed 

 rounded uniovulate ovary, short slender style, and small obtuse stigma; 

 becoming a plano-convex or concavo-convex samara; the hard substance 

 of the body of the fruit branching into several (12 to 16) radiating lines 

 with diaphanous spaces or even complete rounded perforations between 

 them, the whole forming a crenate wing. Seed solitary, somewhat com- 

 pressed, wingless.- Genus almost too near TauscJteria of Asia, which 

 differs in having a beak to the fruit, into which the otherwise involute 

 wing tapers; and in some of our forms the wing is involute. 



1. T. curvipes, Hook. Fl. i. 69. t. 18 (1829): T. runcinalun, Hook.; 

 Don. Diet. i. 196 (1831). A foot high or more, with few and rather strict 

 racemose branches, or smaller and simple-stemmed; radical leaves in a 



