Deiihtria. CUUCMFKILK. 29 



petals yellow, about a lino long, a little exceeding the calyx : porls lanceolate, acute 

 at each end, 3 to 4 lines long, on pedicels noarly as long, in an elongated raceme ; 

 style none. — Torr. & Gray, Kl. i. 100. />. ./o/whhj.s, (!niy, Am. .lour. .Sci. xx.viii. 242, 

 At. Pcicgoy's, above Yosemite Valley, at 7,000 feet altitude, Graij. Uather frequent in the 

 Rocky Mountaina from Colorado to lat. 57°. Near D. Uu-.teji (referred to D. androsdcca), but less 

 cespitose and without the short style which is found in that species. 



5. D. Douglasii, Gray. Glaucous : scajjcs numerous from a mucli-bi-anched 

 leafy caudex, [)ul)eHcent, ^ to 1 ^ inches high, corymhosely (lowered: leaves below 

 ovate, the uppermost obovato or spatulate, 1 to 2 lines long, entire, glabrous or some- 

 what pubescent with simple hairs, hispidly ciliate : petals white, 2 lines long, exceed- 

 ing the rather Heshy nearly glabrous broad and obtuse sei)als : pod ovate-oblong, 

 acutisii at each end, Ijcaked with the slcMuler style, puberulent, 2 lines long ; cells 

 2-ovuled. — I'roc. Am. Acad. vii. 328 ; Watson, 13ot. King JCxp. 22. 



South of Carson City, Nevada {Amlcrson) ; on Mount Davidson {Watson); Sierra Valley 

 {Ij^mmon) ; and by Doiiif/as, probably still farther to the north. 



G. D. eurycarpa, Gray. Tomonto.se with stellate hairs: scapes few-llowered, 1 

 to 2 inches higii : leaves rosulato, spatulate, entire, 4 to 8 lines long : i)od ovate, 5 

 to 10 lines long, atnito and beaked with the long slender stylo; ovules mther 

 numerous in each cell. — Proc. Am. Acad. vi. 520. 



On a dry summit near Sonora Piuss, at 11,500 feet altitude, Dir.wr.r. Known only from fruit- 

 ing specimens that have slied their seeds. 



7. D. alpina, Linn. Densely cespitose and much branched, more or less stel- 

 lately pubescent and villous : scapes | to fi inches high : leaves crowded at the base, 

 spatulate or ol)lanceolate, 2 to 9 lines long, ciliate, notcarinate: flowers large, yellow; 

 petals 1^ to 2^ lines long, much exceeding the broad obtuse sepals: ]»od ovate to 

 oblong-elliptical, 2 to 3 lines long, acute and beaked with the short thick style ; 

 cells 4- 10-ovuled. — Kegel, Fl. Ost-Sib. i. 181 ; Watson, 1. c. 20. 



Var. algida, Kegel. Pubescence villous, not stellate : leaves mostly small and 

 sjjatulate, strongly ciliate, not carinate : style slightly longer. — Fl. Ost-Sib. i. 183. 

 D. algida, Adams; DG. Pro<lr. i. 1G7. 



Var. glacialis, Dickie. Dwarf : leaves more rigid, linear or narrowly oblanceo- 

 late, more or less strongly carinate, and stellate-pubescent, not ciliate : pod short- 

 ovato, pubescent. — Jour. Linn. Hoc. xi. 33. 1). r/lan'n/is, Adam.s, 1. c. 



The tyi)ical Old World form, which occurs also in Greenland, has rather larpe and broad leaves, 

 not carinate, slightly stellate-pubescent, ciliate, the scn])o and pedicels somewhat hairy ; po<l 

 ovate, smooth, beaked with a short style. Tiiis has not l)ecn collected in California, though forms 

 nearly appnwchinj:; it are found in the mountains oast and northward. Var. algidn occurs on Mt. 

 Dana and other peaks about the head of the South Fork of King's Uivcr, nt 13,000 feet altitude 

 (Brewer), and in the Uinta Mountains {U'ntson), as well as on the Arctic Coast. Var. glacialis 

 is somewhat common on high peaks in the Sierra Nevada, and in the mountains eastwanl. A still 

 more extreme form is found on the dry summit of Silver Mountain at 11,000 feet altitude (Brarrr) 

 and in the Kast Humboldt Mountains, Nevada ( H'ntxim) ; very dwarf and densely cespitose; the 

 very .short linear leaves appressed, strongly carinate and ciliate, but otherwise glabrous ; the short 

 scajjos and small orbicular pods liirsutc 



4. DENTARIA, binn. 



Pod linear, stout, with a thickened margin, and attenuate above into the elongated 

 style ; valves flat, nerveless. Reeds in one row, turgid, wingless ; cotyleilons peti- 

 oled, the margins somewhat infolding each other. Sepals ecpml. Petals large, long- 

 clawed, white or purplish. — Low perennials, gl,ibr()us or nearly so ; stems simple, 

 from horizontal fleshy rootstocks or small tubers, usually with 1 or 2 long-petioled 

 compound radical leaves ; cauline leaves 2 or 3, approximate near the top, petioled, 

 simple or compouinl ; raceme short, few-flowered. 



