76 PORTULACACE.E. Clayionia. 



Var. exigua, Torr. 1. c. Low ; radical leaves narrowly linear or filiform ; the 

 cauline distinct, linear, usually exceeding the short raceme. C. exigua & tenuifolia, 

 Torr. & Gray, Fl. i. 200. 



Abundant on the western coast, ranging from Alaska to S. California, and in the interior 

 through Nevada to the Wahsateh and Southern Utah. It is also found in Cuba and Mexico 

 and is naturalized in Europe. The larger forms from shadier or damper localities have usuallv 

 white or pale rose-colored flowers ; in drier and more exposed situations they are often deeper- 

 colored. The succulent leaves are in popular use as a potherb. 



2. C. Sibirica, Linn. Stems 6 to 15 inches high : radical leaves lanceolate to 

 rhomhic-ovate or nearly orbicular, an inch or two long, long-petioled ; the cauline 

 pair ovate (varying from lanceolate to spatulate-obovate), sessile, distinct, \ to 2 

 inches long : raceme very loose, the flowers on long pedicels : petals 2 to 4 lines 

 long, white or rose-colored. Sims, Bot. Mag. t. 2243. C. alsinoides, Sims, Bot. 

 Mag. t. 1309. C. Unalaschkensis, Fischer. C. asarifolia, Bongard. 



In cool woods and swamps, from Bolinas Bay and Sierra Co. to Alaska. The pedicels are often 

 an inch long or more. 



+ -t- Stems usually branching, leafy. 

 M- Leaves opposite. 



3. C. Chamissonis, Esch. Stems weak and slender, erect or decumbent, a foot 

 high or often much less, stoloniferous and rooting at the joints : leaves oblanceolate 

 or spatulate, | to 1^ inches long : racemes few -flowered, the flowers very variable in 

 size, on slender pedicels ; petals 1 to 4 lines long, white. Spreng. Syst. i. 790. 

 C. stolonifera, C. A. Meyer, Mem. Soc. Mosc. vii. 139, t. 3. C. aquatica, Nutt., 

 & C. flagellaris, Bongard, Torr. & Gray, Fl. i. 201. 



In wet places in the mountains, from Yosemite Valley to Alaska, and eastward to Colorado. 

 The stolons are frequently bulbiferous. 



-n- ++ Leaves alternate. 



4. C. parvifolia, Moino. Stems filiform or slender, branching from the base, 

 4 to 10 inches high, erect or ascending : lower leaves clustered, broadly oblanceolate 

 or spatulate, an inch long or less ; cauline leaves usually much smaller : racemes 

 loose, few-flowered : petals 2 to 4 lines long, rose-colored. DC. Prodr. iii. 361 ; 

 Torr. & Gray, 1. c. C.filicaulis, Dougl.; Hook. Fl. i. 222, t. 72. 



In shaded moist places among rocks, about Yosemite Valley (Bolandcr, Gray), Donner Lake 

 (Greene), and northward to. Vancouver Island. The most slender of all our species and some- 

 times exceedingly succulent. 



5. C. linearis, Dougl. Stems usually 3 to 6 inches high, more branching : 

 leaves narrowly linear, 1 to 2 inches long, clasping at base : racemes often secund : 

 sepals very broad, firm and conspicuous, often colored, 1 to 2J lines long : petals a 

 little longer, white: seeds sharply margined. Hook. Fl. i. 222, t. 71. C. di- 

 chotoma, Nutt. in Torr. & Gray, Fl. i. 202, a reduced form. 



In cool moist localities, from Napa (Biyelow) and Sierra counties (Lemmmi) northward to the 

 British boundary ; Falls of the Yellowstone, ffayden. 



6. C. diffusa, Nutt. 1. c. Stem diffusely and dichotomously branched, 6 inches 

 high, leafy : leaves all ovate or deltoid, petioled, acute, J to 1 inch long : racemes 

 numerous, terminal and axillary : pedicels slender : petals 2 lines long or less, little 

 exceeding the sepals, pale rose-color. 



Pine woods, Oregon (NuttalT) ; also Kellogg & Harford, but locality uncertain. 



* * Perennials, with deep-seated tubers. 



1. C. Caroliniana, Michx., var. sessilifolia, Torr. Eadical leaf narrow ; cau- 

 line 2, opposite, sessile, lanceolate to linear, 1 or 2 inches long : raceme nearly ses- 

 sile, few-flowered and cymose, with a single scarious bract at base : sepals ovate, 



