CACALiopsis COMPOSITAE 369 



LUINA 



Common along mountain streams, California to Alaska Newfoundland 

 Massachusetts New York and Wisconsin. 



P. nivalis Greene Pitt, ii, 18. " Rootstocks slender, matted, scarcely 

 subterranean: leaves 6-10 inches high; lamina 3 to 6 inches long, of roundl- 

 reniform or broadjy cordate-ovate outline, 5-parted, the sinuses oblong and 

 closed, the segments of broad cuneate-obovate circumscription, deeply 

 3- to 5-lobed, the lobes with a few coarse angular mucrohate spreading 

 teeth ; lower face of leaves silky-tomentose, upper glabrous, deep green : 

 seapes about a foot high ; heads a dozen or more, racemosely arranged and 

 long-peduncled." Along streamlets. Mount Rainier, Washington. 



79 CACALIOPSIS Gray Proc. Am. Acad, xix, 50. 



Perennial herbs with palmately lobed leaves, and rather large 

 heads of yellow flowers. Heads many-flowered, discoid, of wholly 

 -hermaphrodite and fertile flowers. Involucre hardly herbaceous, 

 simple, of carinately 1-nerved bracts. Corollas rather deeply 

 5-cleft, the cylindraceous throat rather longer than the slender 

 tube. Anthers much exserted, with lanceolate tips and entire base. 

 Style puberulent for some distance below the slightly flattish 

 branches. Achenes linear, glabrous, 10-striate. Pappus very co- 

 pious, soft and white, equalling the corolla. 



C. Nardosmia Gray 1. c. Floccose-woolly, at length glabrate: stems 

 stout; 3-4 feet high, 2-3-leaved and bearing several loosely paniculate 

 heads : leaves alternate, long-petioled, round-cordate to fan-shaped, 5-9- 

 cleft, or rarely parted, the lobes or divisions rather broad, incisely dentate 

 or lobed: heads an inch high, discoid; bracts of the campanulate invo- 

 lucre 13-30, lanceolate -linear, acuminate, a little shorter than the disk: 

 corollas yellow. Open Pine woods, Washington to California. 



80 LUINA Beuth. Hook. In. PI. t. 1139. 



Low herbs with simple stems, alternate entire leaves and small 

 heads of yellow flowers. Heads about 10-flowered, homogamous, 

 of wholly hermaphrodite and fertile flowers. Involucre of 10-12 

 dry and rather rigid 1-nerved eqlial bracts. Corollas with slen- 

 der tube and funnelform 5-lobed limb. Anthers much exserted, 

 sagittate at base. Style glabrous, its flattened and linear branches 

 obscurely pappillose on the back, very obtuse. Achenes obscurely 

 10-striate, glabrous. Pappus of numerous soft white bristles 

 equalling the corolla. 



L. hypoleuca Benth. 1. c. Stems simple, few or many from a stout 

 woody rootstock, white with appressed tomentum, 6-12 inches high, leafy 

 up to the corymbiform cyme of several small heads; leaves ovate or 

 oval, sessile, entire, an inch or less long, rather coraiceous, the upper 

 face green and glabrate, the lower densely white-tomentose; involucre 

 4 lines high, nearly equalling the light yellow corollas. On cliffs and 

 rocky places in the mountains, Brit. Columbia to California. 



81 RAINIERA Greene Pitt, iii, 291. 



"Stoutish upright milky-juiced perennial, with the aspect and 



inflorescence of a Nabalis, but more nearly the characters of Mes- 



ade.nia. Heads racemose, 2 or 3 in the axil of each small bract. 



Invdlucre simple, cylindric, of 4 to 6 firm erect bracts. Recepta- 



