42 
CRUCIFERAE 
6 BARBAREA R. Br. 
Perennial herbs with lyrate or pinnatifid leaves. Flowers yellow. Pod 
linear, somewhat quadrangular, the valves strongly 1-nerved. (Named 
after St. Barbara.) 
1. B. vulgaris R. Br. Winter Cress. Stem erect, 2.4 to 3.8 dm. 
high ; herbage glabrous ; leaves with the terminal lobe largest and often 
oblong-lanceolate; petals about 6 mm. long; pods 3.6 cm. long.—Along 
streams in the hills or mountains. 
7. ERYSIMUM L. Wall-Flower 
Biennial or perennial herbs. Stem simple or with few branches. 
Leaves narrow, entire or toothed. Flowers.orange to light yellow. Pod 
linear, flattened or 4-sided. (Greek name of a garden plant.) 
Flowers orange; pods 4-sided; mountains.1. E. asperum . 
Flowers light yellow ; pods flattened ; coastal.2. E. capitatum. 
1. E. asperum DC. Western Wall-Flower. Stem 3 to 7 dm. high, 
rather densely clothed below with leaves ; herbage roughish-pubescent; 
lower leaves petioled, 7.2 to 14.4 cm. long, 4 to 12 mm. wide, the upper¬ 
most shorter; flowers 1.6 to 2 cm. broad; blade of petals broadly elliptic; 
pods 7.2 to 9.6 cm. long, 2 mm. wide.—Rocky places in the hills and moun¬ 
tains. The root was used medicinally by the native tribes. 
2. E. capitatum (Dougl.) Greene. Coast Wall-Flower. Stem 1.4 
to 4.3 dm. high, finely pubescent; flowers cream-color to yellowish, rarely 
white, at first in a head-like cluster, the axis in fruit elongating and be¬ 
coming a short raceme; pods 3.6 to 6 cm. long, nearly 4 mm. broad.— 
Sandy lands along the coast. 
8. ARABIS L. Rock Cress 
Annuals, biennials or perennials. Flowers rose-purple, white or yel¬ 
lowish white. Petals with narrow claw and flat blade. Pod flattened 
parallel to the partition. Valves more or less 1-nerved. (Name from 
the land Arabia.) 
1. A. glabra (L.) Bernh. Tower Mustard. Biennial; stem erect, 
simple, 4.7 to 11.5 dm. high; basal leaves broadly spatulate to narrow 
obovate, dentate, 3 to 10.8 cm. long; cauline leaves ovate to lanceolate, 
entire, clasping; flowers dull white; pods narrow, strictly erect, 7.2 to 
9.6 cm. long.— Foothills and mountains. 
9. CARDAMINE L. Bitter Cress 
Erect herbs with leafy stems. Leaves pinnate, the basal in a rosette. 
Flowers white or pinkish. Flowers smaller and pods narrower than in 
Dentaria. (Ancient Greek name of some species of cress.) 
1. C. oligosperma Nutt. Stems 7 to 30 cm. high; leaves 1.2 to 3.6 
cm. long, with 5 to 11 leaflets; petals much surpassing sepals; valves 
of pod separating while still green.—Openly wooded country, Coast 
Ranges from Monterey Co. n. 
10. DENTARIA L. Toothwort 
Glabrous perennials. Stem and 1 or 2 long-petioled leaves from a 
tuberous rootstock, the stems rarely branched and sparingly leafy. 
Flowers white or rose-tinted, appearing in early spring. Petals with 
