110 CRUCIFERACEAE (MUSTARD FAMILY) 



STANLEYA 



Biennial or perennial, stout. Leaves entire or few-toothed. Flowers 

 white or greenish or yellow, in elongated many-flowered racemes. Sepals 

 long, spreading. Petals long, narrow, slender-clawed. Stigma sessile, 

 entire. Pod terete or subterete, elongated. Seeds oblong, in i row in 

 each cell. (Honor of E. Stanley, ex-president of the Linnaean Society.) 



A. Flowers white or greenish. 



B. Stem angular; buds scattered before opening; pedicels in fruit 6-8 mm. long. E. 



S. viridiflora 



BB. Stem terete; buds densely massed before opening; pedicels in fruit 12-15 mm. 



long. E. S. confertiflora 



AA. Flowers yellow. E. S. rara 



THELYPODIUM (PURPLE MUSTARD) 



Annual or biennial, mostly coarse. Leaves entire or pinnatifid. Flowers 

 white or purple, in long racemes. Petals plane. Stamens well exserted. 

 Pod linear, terete or 4-angled, with short thick stipe. Seeds in i row. 

 (Gk. thelys = female, pous = foot or stalk ; the pod is short-stalked.) 



A. Stem leaves cordate-clasping or auriculate at base, sessile. 

 B. Pods 1.2-3.1 cm. long; petals 4-12 mm. long. 



C. Flowers in young clusters opening considerably below the bud-bearing apex 

 of the flowering axis. 



D. Plant hispid near the base; buds and flowers ascending. E. T. howellii 

 DD. Plant glabrous throughout; buds and flowers widely spreading. E. 



T. eucosmum 

 CC. Flowers opening close to the summit of the cluster while it is still corymbose. 



E. Basal leaves spatulate; auricles of stem leaves obtuse. E. T. torulosum 

 EE. Basal leaves lanceolate; auricles of stem leaves acute. T. flexuosum 



BB. Pods 5-7.5 cm. long; petals 14-17 mm. long. E. T. sagittatum 



AA. Stem leaves not cordate-clasping nor auriculate at base, either sessile by a narrow 



base or distinctly petioled. 



F. Annual; racemes loose; pods reflexed. W. E. T. lasiophyllum 



FF. Biennial; racemes dense; pods spreading. 



G. Leaf margin entire or wavy; pods about 2.5 cm. long. E. T. integrifolium 

 GG. At least some of the leaves with margin serrate or more deeply lobed. 

 H. Leaves coarsely dentate to entire; pedicels and rachis milky-white. E. 



T. milleflorum 

 HH. Leaves laciniate to dentate; pedicels and rachis green. C. E. T. laciniatum 



CAULANTHUS (WILD CABBAGE) 



Biennial or perennial, stout. Leaves mostly pinnatifid. Flowers dull- 

 colored, in long racemes. Sepals large. Pod sessile, terete, with short 

 thick stipe. Seeds in i row in each cell, oblong, flat. (Gk. kaulos = a 

 stem, anthos = a flower; referring to the long claws of the petals.) 



A. Stem somewhat hairy; flowers ascending. E. C. pilosus 



AA. Stem glabrous. 



B. Flowers erect or ascending; sepals 10-12 mm. long. E. C. crassicaulis 



BB. Flowers horizontal or reflexed; sepals less than 10 mm. long. E. C. hastatus 



