cacaliopsis COMPOSITE 369 



L UINA 



Common along mountain streams, California to Alaska Newfoundland 

 Massachusetts New York and Wisconsin. 



P. nivalis Greene Pitt, ii, 18. " Roots! ocks slender, matted, scarcely 

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

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

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

 3- to 5-lobed, tbe lobes with a" few coarse angular mucronate spreading 

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

 scapes 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 

 o-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 flatfish 

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

 pious, soft and white, equalling the corolla. 



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

 stout; 2-4 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 campanul?te involucre 12-30, 

 lanceolate-linear, acuminate, a little shorter than the disk : corollas yellow. 

 Open Pme woods, Washington to California. 



80 LUINA Benth. 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 equal bracts. Corollas with slen- 

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

 sagittate at base. Style glabrous, its flattened and linear branch- 

 es obscurely pappillose on the back, very obtuse. Achenes ob- 

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

 bristles equalling the corolla. 



L. hypoleuca BentK 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 -tonientose: involucre 4 lines high, nearly equalling the 

 light yellow corollas. On cliffs and rocky places in the mountains, Brit. Co- 

 lumbia to California. 



81 RAINIERIA Greene Pitt, iii, 291. 



" Stoutish upright milky juiced perennial, with the aspect and 

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

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

 Involucre simple, cylindric, of 4 to 6 firm erect bracts, Retfepta- 



