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. B. crassifolia. 



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



Stem leaves linear. 3. E. longirostris. 



1. Euklisia crassifolia (Greene) Rydb. {Streptanthus crassif alius Greene) 

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

 Grand Junction; Cimarron. 



^. 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-s cm. long. 



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



2. T. paniculatum. 

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



3. T. Bakeri. 

 Petals bright yellow. 4. T. aureum. 



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. integrifolium. 

 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. linearifolium. 

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



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

 — Southwestern Colorado. 



