22 CRUCIFER^ 



cuneata, Greene. Tnberiferoua like the next: leaflets petiolulate. 

 paucisecta, Benth. Petals 6 to 9 lines long, white or pinkish. 

 Breweri, Watson. Terminal leaflet much the largest: petals 2 lines long. 

 ang^ata, Hook. Flowers few, 3 to 4 lines long: pods short. Oregon. 

 cordifolia, Gr. Stout: leaves cordate-orbicular or narrower, 

 bellidifolia, L. Alpine, tufted, 2 or 3 in. high: leaves entire. 



6. ARABIS, Linnaeus. 



Pods straight, strictly erect or ascending. 



Flowers white, 2 or 3 lines long, in dense elongated racemes ,.*. 1, fl 



Flowers light pink or rose color, 2 or 3 lines long. Alpine 3, 4 



Flowers rose-purple, 6 to 9 lines long: leaves dark green, ciliate 5 



Pods curved and usually (except No. 6) more or less reflexed. 



Pods 3 in. long, ascending: stout, 2 ft. high, branching 6 



Pods 1 to 4 in. long, strongly reflexed: stem erect, ^ to 2 ft. high 7, 8 



Pods 3 or 4 in. long, scarcely a line wide, spreading, recurved 9 



Pods similar, shorter: stem simple, 2 to 10 in. high, villous 10 



1. A. perfoliata, Lam. Glaucous, stout, 2-4 ft. high: leaves crowded clasping. 



2. A. hirsuta, Scop. Smaller, more hairy: pods half as long, 1-2 in. Or. 



3. A. Lyallii, Watson. Bright green or glaucous, slender: leaves clasping. 



4. A. platyspenna, Gr. Canescent with stellate hairs: pods 2 lines wide. 



6. A. blepharophylla, H. & A. Smooth, often tufted. Coast. Monterey to S. F. 



6. A. repanda, Watson. Leaves 3-4 in. long, sinuate toothed: petals 2-3 lines long. 



7. A. Holboellii, Hornem. Petals 3-4 lines long, white to purple, reflexed. 



8. A. subpinnatiflda, Watson. Leaves coarsely toothed: petals pinkish. 



9. A. arcuata, Gr. Canescent, hairs branching: petals violet 4-6 lines long. 

 JO. A. Breweri, Watson, Petals deep rose, 1-4 lines long: sepals purplish. 



7. STBJEPTANTHUS, Nuttall. 



Glabrous or glaucous: stem-leaves clasping by cordate or sagittate base. 



Stem-leaves thick, usually toothed, cordate to narrowly ovate 1 



Stem-leaves rounded cordate, often crowded, entire: pods curved 2 



Stem-leaves ovate to lanceolate, acute: pods nearly straight, slender 3 



SteAi-leaves spatulate: sepals broad, 3 lines long: petal-blades purple 4 



Stem-leaves very narrow, pinnatifid; or some entire, small and cordate 6 



Stem-leaves very slender, margins involute: outer larger sepals subcordate 6 



Ixlaucous: racemes zigzag: calyx subglobose, black purple 7 



More or less hispid with simple hairs: flowers purple or red. 



Stem-leaves auriculate-clasping, toothed: racemes one-sided 8, 



Steio-leaves scarcely clasping: raceme short: flowers often recurved 10 



