CRUCIFERAE, 21 
Pods elliptical, twisted, flat, 2 lines long, 6-10-seeded..... tio RoOe BEES Weds . 25 
Pods minute, orbicular, bristly with hooked hairs, l-seeded.........-.eeeeeeceeeee 26 
Pods orbicular or obovate, broadly margined, plano-convex, l-seeded....... eee 27 
Pods terete, spongy-inflated, tapering above, an inch or more long.......ece0-.-.-- 28 
1. PLATYSPERMUM, Hooker. 
1. P. scapigerum, Hook. Glabrous. leaves mostly runcinately lobed. S.N. Mta. 
2. ALYSSUM, Tournefort, 
1, A. calycinum, L. Petals white or yellowish: sepals persistent: pods 4-seeded. 
2. A. maritimum, L, Petals white: pods 2-seeded (known as Sweet Alyssum). 
8. DRABA, Linneus. 
Stems leafy. Nos. 1 to 4. Stems scape-like, few-flowered, not annuals. Nos. 5 to 10. 
1. D. cuneifolia, Nutt. Hirsute, 1 to 6 inches high: petals white, 1 or 2 lines long. 
2. D. stenoloba, Ledeb. Larger, montane or alpine: petals yellow, obtuse, 
3. D. aureola, Watson. Densely stellate-hairy: raceme dense: petals yellow. 
4. D. corrugata, Watson. Pubescence coarser: racemes looser: pod contorted. 
5. D. crassifolia, Graham. Glabrous: yellow petals a line long: pods acute, 
6. D. Douglasii, Gr. Glaucous: scapes 6 to 18 lines long: petals white. 
7. D. Lemmoni, Wats. Stout caudex branching: scapes an inch high: petals yellow. 
8 D. eurycarpa, Gr. Pod ovate, beaked, 5 to 10 lines long. Sonora Pass. 
9 D. alpina, L. Petals yellow, 14 to 24 lineslong. Alpine, 
10. D. Howellii, Watson. Similar: petals 3 or 4 lines long: pods often one-sided. 
N.W, Cal. 
4. DENTARIA, Linneus, 
1, D. tenella, Pursh. Leaves 1 to 3, 2-5-parted: flowers 3 to 6 lines long. 
2. D. Californica, Watson. Leaves 2 to 4, toothed, rarely 3-lobed: petals rose-color. 
5. CARDAMINE, Linnzus, 
Leaves pinnate with several pairs of small leaflets...... é CANE SKGEsee eenew Ly 2-3 
Leaves pinnate with larger leaflets, or simple. 
Radical leaves 5-7-foliolate; stem leaves with 5 to 9 entire leaflets... ...0....cceneceee & 
Radical leaves mostly simple; stem leaves 3-5-foliolate.........-....+--sce0..---. 5, B 
Leaves all ternate, the leaflets 3-5-lobed or toothed: tall................ Biaiiaard'S essnere at 
Leaves all simple; margin sinuate or entire............ss0+-0+05 cecenenccoseves 8 OD 
1, ©. Gambelii, Watson. Leaflets 9 to 13, sessile, ante: petals 4 lines long. 
2. ©. oligosperma, Nutt. Leaflets 7 to 11, petiolulate: petals 1 to 14 lines long. 
3. C. hirsuta, L. Stouter: leaflets sessile: flowers larger in longer racemes. 
