166 BRASSIACEAE. 



24. CONRINGIA Heist. 



i. Conringia orientalis (L.) Dum. Introduced from Europe; from Me. and 

 Alb. to Del. and Colo. Minnehaha. 



25. STREPTANTHUS Nutt. 



i. Streptanthus wyomingensis A. Nels. On dry hills of Wyo. and Colo. 

 Alt. about 7000 ft. Palisades, Mesa Co. ; Cimarron ; Glenwood Springs, Gar- 

 field Co. 



26. EUKLISIA (Nutt.) Rydb. 



Stem leaves oblong or ovate, with cordate base. 



Leaves thick; sepals with bristles near the apex. i. E. crassifolia. 



Leaves thin ; sepals without bristles. 2. E. cordata. 



Stem leaves linear. 3. E. longirostris. 



1. Euklisia crassifolia (Greene) Rydb. (Streptanthus crassifolius Greene) 

 On dry hills from Colo, to Utah, N. M. and Ariz. Alt. about 7000 ft. 

 Grand Junction ; Cimarron. 



2. Euklisia cordata (Nutt.) Rydb. (Streptanthus cordatus Nutt.) On dry 

 hills from Wyo. to Colo, and Utah. McCoy's, Eagle Co. ; Mesa Verde. 



3. Euklisia longirostris (S. Wats.) Rydb. (Arabis and Streptanthus longi- 

 rostris S. Wats.) In valleys from Wyo. to Utah, N. M. and Ariz. Palisades. 



27. THELYPODIUM Endl. 



Plant glabrous or with simple hairs. 

 Upper leaf-blades auricled at the base. 

 Petals rose-color, purplish or white. 



Pods 7-10 cm. long. i. T. elegans. 



Pods 3-5 cm. long. 



Stem-leaves lanceolate-sagittate ; petals rose or purplish. 



2. T. paniculatum. 

 Stem-leaves ovate-sagittate ; petals white or straw color. 



3. T. Bakcrl. 

 Petals bright yellow. 4. T. anreitin. 



Upper leaf-blades attenuate at the base. 



Some of the leaves sinuately toothed or laciniate. 



Pedicels slender, 6-15 mm. long; upper leaves entire or slightly toothed; 



pods divergent. 5. T. Wrightii. 



Pedicels short and stout, 2-5 mm. long ; most of the leaves laciniate ; 



pods reflexed. 6. T. utahensis. 



Leaves all entire or the lower sometimes repand. 



Inflorescence dense ; stigma truncate ; lower leaf-blades obovate or 



oblanceolate. 

 Inflorescence very short ; stipes i mm. long ; pod rather stout. 



7. T. intcgrifolium. 

 Inflorescence more elongated ; stipes 2-3 mm. long ; pod very slender. 



8. T. gracilipes. 

 Inflorescence very slender and lax ; stigmas conical ; leaves all linear. 



9. T. linearifolinm. 

 Plant pubescent with branched hairs. 10. T. micranthum. 



i. Thelypodium elegans M. E. Jones. On adobe plains in Utah and Colo. 

 Southwestern Colorado. 



