204 BOTANY. 



long-acuminate, with a few very narrow almost filiform elongated teeth near 

 the middle.— Middle Park, Colorado, (Parry, 1864.) Canons of the East 

 Humboldt Mountains and on a peak west of Parley's Park in the Wah- 

 satch ; 7-9,000 feet elevation ; July-September. (716.) 



Oeepis acuminata, Nutt. Torrey, in Stansb. Bep. 392, t. 8. Perennial; 

 stem sparingly canescent, 1-3° high; leaves pubescent, the radical ones 

 lanceolate, long-acuminate, 6-9' long, tapering into a petiole often two-thirds 

 as long, laciniately pinnatifid into numerous linear-lanceolate spreading or 

 curved usually entire teeth ; cauline leaves few, mostly sessile, the lower 

 similar to the radical, the upper linear, entire ; heads 5-7-flowered, very 

 numerous in a compound fastigiate corymb ; involucres glabrous or nearly 

 so, cylindrical, calyculate with a few ovate appressed bractlets ; the proper 

 scales 6-7, about 5" long ; mature achenia tapering slightly upward, 10-stri- 

 ate. — The figure in Stansbury's Eeporl shows a plant with the foliage more 

 like that of C. occidentalis, and achenia more decidedly beaked than either 

 species affords among the numerous specimens now examined, though it cor- 

 rectly represents the very numerous slender heads of C. acuminata. Ore- 

 gon and California to Colorado and Nebraska ; Mt. Davidson, (Bloomer !) 

 Stansbury Island, (Stansbury.) Hill-sides from Western Nevada to the 

 Uintas ; 5-7,000 feet elevation; May-July. (717.) 



Tboximon cuspidatum, Pursh. Northern Illinois and Wisconsin to Ore- 

 gon, (Spaulding!) Valley of Grreat Salt Lake, (Stansbury.) 



Maceoerhynchus ^ GLAUcus. ( Troximon glaucum, Nutt.) Perennial, 

 smooth and somewhat glaucous ; leaves linear-lanceolate or lanceolate, 3-6' 

 long, about 6" broad, entire or slightly runcinate-toothed ; scapes 6-9' high ; 

 involucral scales unequal, the outer ones shorter and broadly ovate-lanceolate, 

 slightly pubescent ; inner ones lanceolate, 7-9" long ; achenia 10-ribbed, 

 contracted toward the summit, but scarcely beaked ; pappus rather coarse, 

 longer than the achenium. — Saskatchewan to Nebraska and Colorado, (65 

 Parry, 354 Plall & Harbour, in part, 260 Vasey ?) Var. laciniatus. " Leaves 



1 MACEOEEHYNCHUS, LbssinG. Heads many-flowered, the flowers all ligiilate. Involucre cam- 

 panulate ; the lanceolate or ovate-lauceolate scales imbricated in 2-3-series, the inner ones soarious-mar- 

 gined, the outer ones sometimes shorter, often foliaceous. Receptacle naked, or very rarely with a few 

 chaify scales among the flowers. Achenia glabrous, terete or slightly oboompressed, 10-ribbed or 

 winged, narrowed above and in most species at length produced into a long slender beak, the apex di- 

 lated into a small flat disk. Pappns of copious white scarcely scabrous soft and capillary or coarser 

 and somewhat rigid bristles.— Annual or perennial herbs of Western America, North and South, nearly 

 or quite aoaulesoent, with rather large heads solitary on long naked scapes, and entire or laciuiate-pin- 

 natifid often elongated leares ; flowers yellow, rose-color, or purplish. 



