158 BRASSICACEAE. 



more or less cinereous-tomentose with stellate hairs. In- 

 florescence racemose, dense, often branched. Flowers 

 whitish or purple. Sepals ovate to oblong, erect or 

 spreading, pubescent. Petals conspicuous with spread- 

 ing blade and slender claw. Stamens 6 with linear sagit- 

 tate anthers. Pods strongly obcompressed, 2-celled; the 

 cells nearly orbicular, indehiscent with a thickened mar- 

 gin, separating at maturity from the persistent linear 

 axis, 1-seeded. Seeds flat, marginless. Cotyledons ac- 

 cumbent. 



1. D. calif ornica maritima Davidson. Branching from the 

 base, 15-30 cm. high; leaves thick, fleshy, densely pubescent, the 

 basal narrowed to slender petioles, the upper sessile, coarsely toothed 

 or subentire; racemes short, very dense, elongated in fruit; flowers 

 about 12-15 mm. broad; limb purplish; pedicels dark purple; pods 

 8-10 mm. wide, half as long, emarginate above and below, pubescent 

 on the margins. 



Occasional along the seashore between Redondo and Playa del 

 Key. 



17. HUTCHINSIA R. Br. 



Low slender mostly diffuse herbs, more or less pubes- 

 cent with forked hairs, ours annual with entire or pin- 

 nately lobed leaves and minute white flowers in terminal 

 racemes. Stamens 6. Style none or very short. Sili- 

 cles oval, obcompressed, the valves strongly 1 -nerved. 

 Seeds numerous in each cell. Cotyledons incumbent or 

 accumbent. 



1. H. procumbens (L.) Desv. Branching from the base, slender, 

 ascending or procumbent, 5-20 cm. long; lower leaves short-petioled, 

 pinnatifid, lobed, dentate or sometimes entire, 1-2.5 cm. long; 

 upper leaves sessile or nearly so, entire or lobed; pedicels slender, 

 ascending or spreading, 6-12 mm. long in fruit; pods elliptic or oval, 

 obtuse, rarely emarginate, 3-4 mm. long. ( Capsella divaricata 

 Walp.; C. elliptica Meyer.) 



In moist saline places throughout our range. March-April. 



18. BURSA Weber. Shepherd's Purse. 



Erect annual herbs, pubescent with forked hairs. 

 Basal leaves tufted. Flowers racemose, small, white. 

 Silicles cuneate-obcordate, obcompressed, the valves 

 keeled. Style short. Seeds numerous in each cell, 

 marginless. Cotyledons accumbent. 



1. B. bursa-pastoris (L.) Britton. Erect, branching, 15-40 cm. 

 high, pubescent below, mostly glabrous above; basal leaves lobed or 



