68 CRASSULACBiE. 



2. T, angiistifolia, Nutt. Stems rooting, 1 in. long: leaves 1-2 lines long. 

 Var. Bolanderi, Watson. Stems 3-4 in. high: flower-paits in 3's or 4's. . 



3. T. peduncularis, Smith. Pedicels 4-6 lines long in fruit: carpels pniplialu. 



2. SEDTJM, Linnaeus. 



Flowers dioecious, deep purple, parts mostly in 4'8 1 



Leaves narrowed toward the base, obtuse 2, 3, 4 



Leaves broadest near the base, acute , 5, 6, 7 



1. S. Rhodiola, DC. Stems simple: leaves acute, rarely entire. Alpine. 



2. S. spathulifolium, Hook, Glaucous: petals yellow, 3 lines long, acute. 



3. S. Oreganum, Nutt. Not glaucous: petals pale rose, much exceeding the stamens. 



4. S. obtusatum, Gr. Similar to 2 & 3: flowers pedicelled; petals pale yellow, broader. 



5. S. varieg-aturajWatson. 'Radical leaves slender: petals yellow, of ten purple- veined. 



6. S. radiatum, Watson. Carpels broad, the beaks horizontal, star-like: petals yel. 



7. S. pumiluiu, Benth. Annual; 1-3 inches high: leaves 1-2 lines long: carpels !• 

 seeded. 



3. COTYLEDON, Linnaeus. 



Leaves cylindrical and somewhat 3-sided ,. l>d 



Leaves flattened: carpels nearly distinct, erect. 



Petals united to the middle, red 3 



Petals united | the length, pale yellow, 4 lines long 4 



Petals united only at the base, yellow or orange. 



Leaves glaucous, white dusty or mealy. . . 5, 6, 7, 8 

 Leaves not glaucous or mealy, reddish 9, 10 



1. C. edulis. Brewer. Petals widely spreading, yellowish. San Diego. 



2. C. viscida, Watson. Leaves numerous, very viscid: corolla reddish. S. Cal. 



3. C. pulverulenta, B. & H. Densely white-dusty : leaves 2 or 3 inches broad. 



4. 0. Oregonensis, Watson. Leaves spatulate, obtuse: racemes axillary. 



5. C. lanceolata, B, & H. Petals orange, mid- vein glaucous: calyx-base broad. 



6. C. farinosa, B. & H. Usually densely mealy: petals lemon yellow. 



7. C. csBspitosa, Haworth. Sepals ovate, 2 lines long or less: petals yellow. 



6. C. laxa, B. & H. Petals orange-yellow, keeled, prominent mid-vein glaucona. 



9. 0. Palmeri, Watson. Flowering stem red: petals pale yellow. S. Cal. coasts 



10. 0. Liingula, Watson. Leaves an inch broad, 2 or 3 inches long, acute. 



droseracej:. 



1. DK.OSERA, linnaeus. 

 D. rotundifolia, L. Leaf- blade rounded, 2 6 lines broad: petals 2 lines long. 



