CRUCIFERiE. 23 



Stem-leaves an Inch or less long, not clasping: flowers and pods erect 11 



1. S. cordatus, Nutt. Petals 4-6 lines long, yellowish to purple, 



tortuosus, Kellogg. Petals similar: pods narrower (a line wide). 

 Breweri, Gr. Petals 3-5 lines long, purple: pods 1^ to 2^ in. long. 

 Howellii, Watson. Collected in S.W. Or. by Thos. Howell in 1884. 

 diversifolius, Watson. Pods strongly reflexed, slender. Cosumnes River, 

 polygaloides, Gr. Sepals yellow: petals purple scarcely exserted. 

 niger, Greene. Petals with purple claw and minute veinles white blade, 

 peramaenus, Greene, calyx magenta: blade cf petals white, purple-veined, 

 glandulosus, Hook. Petals red-purple, 6 to 8 lines long. 



hispidus, Gr. Hirsute, 2-5 in. high: red-purple petals 4-6 lines long. 



fiavescena, Hook. Petals yellowish, linear: sepals half as long, acute. 



8. CHEIRANTHTJS, Linnaeus. 



1. C. Menziesii, B. & H, Smooth stems scape-like: petals purple. This is Phani' 

 caxdis Menziesii, Greene {the generic name given by Nuttall). 



2. C. asper, C. & S. Stems erect, leafy: petals orange or yellow. 



9. CAXJIiANTHUS, Watson. 

 1. C. procerus, Wats. Glabrous, 4 to 7 ft. high, stout, branching: flowers greenish* 



10. THELYPODITJM, Endlicher. 



1. T. brachycarpum, Torr. Stem 1 to 5 ft. high: petals slender, white. S. N. Mt». 



2. T. flavescens, Watson Sepals hairy, yellowish: pod I^ in. long. 



3. T. lasiophyllum, Greene. {Sisymbrium rejlexum "Nutt.) Leaves pinnatifid: stems 

 1 to 5 ft. high: poda deflexed or erect. 



11. STANLEY A, NuualL 

 L S. pinnatiflda, Nutt. Stems several, 1 to 8 ft. high: petals narrow. 



12. EBYSIMUM, Linnaeus. 

 1. £. asperum, DC. Canescent, leafy: petals 8 to 12 lines long. 



13. BBASSICA, Linnajus. 



1. B. nig^a, Boiss. Leaves petioled: pods 4-angled, 6 to 9 lines long. 



2. B. campestris, L. Upper leaves clasping: puds 2 or 3 in. long; beak long. 



3. B. ^inapistruxn, Boiss. Rough-hairy: poJs 1 to I^ in. long, ^ beak. 



14. BARBAREA, Robt. Brown. 

 1, B. vulgaris, R. Br. Perennial, 1 to 3 ft. high: racemes dense, yellow. 

 Var. arciiata, Koch,, has pods and pedicles spreading. Wet ground. 



