438 COMPOSITiE. Troximon. 



Trans. Am. Phil. Soc. 1. c, a dwarf form. T. taraxacifolium, Nutt. 1. c, a larger form. — 

 Dakota to Saskatchewan and to near Arctic coa.st, south to the mountains of Colorado, west 

 to the Sierra Nevada and Washington Terr, on the mountains. Passes through smoother 

 and uarrowish-leaved forms to the type of this polymorphous species. 



§ 2. Macrorhynchus. Akenes with a slender and mostly filiform nerveless 



beak and soft pappus. — Macrorhynchus^ Torr. Sa Gray, Fl. 1. c. Trochoseris, 



Endl. Gen., & Poepp. & Endl. Nov. Gen. & Spec. iii. 56, t. 2G3. Troximon in 



part, Stylopajjpus, Gryptopleura, & Kymapleura, Nutt. Trans. Am. Phil. Soc. vii. 



430, 434. 



* Perennials, with akene acute or tapering at summit 



-1— Into a beak not longer or little longer than the cylindraceous or narrowly fusiform body. 



T. aurantiacum, Hook. Loosely soft-pubescent and glabrate : leaves from linear-lan- 

 ceolate to spatulate, thinnish, entire, or sjjaringly laciuiate-dentate, occasionally pinnatifid : 

 scape from a span to a foot or more high : involucre oblong to campanulate, 7 to 9 lines 

 high ; its bracts from broadly to narrowly lanceolate and acute, or outer and lo.oser ones 

 oblong and obtuse: flowers orange, commonly changing to brownish red or purjjle : akenes 

 thickish, 3 or 4 lines long, and the firm beak only 2 or 3 lines long : pappus somewhat rigid- 

 ulous. — Fl. i. 300, t. 104. T. roseum, Nutt. Trans. Am. Phil. Soc. 1. c, a small form. Macro- 

 rhynchus aurantiaciis, Pisch. & Meyer, Ind. Sem. Hort. Petrop. 1837 ? M. troximoides, 

 Torr. & Gray, Fl. ii. 491. — Mountain prairies and banks of streams, northern Rocky Moun- 

 tains to Brit. Columliia and Oregon, perhaps California, and mountains of Colorado. 



Var. purpureum, Guay. Leaves apparently thickish, laciniate, and with the purple- 

 tinged involucre very glabrous or glabrate: " flowers purjjle." r—Proc. Am. Acad, xix. 72. 

 Macrorhynchus purpureus. Gray, PI. Fendl. 114. — Along Santa Fe Creek, New Slexico, 

 Fendler. A similar form in mountains of Colorado. 



T. gracilens, Gray. Resembles slender forms of preceding : leaves mostly entire, flaccid, 

 from lanceolate to nearly linear, or some narrowly spatulate : scape 10 to 18 inches high : 

 head and involucral bracts narrow : flowers deej3 orange : akenes fusiform-linear, 3 or 4 lines 

 long; the very slender beak 4 or 5 lines long: pappus soft, but not flaccid. — Proc. Am. 

 Acad. xix. 71. — Cascade Mountains of Oregon and AVashingtou Terr., Lyall, Nerius, 

 Suksclorf, Brandecjee. Rocky Mountains in N. Wyoming, Forwood. 



Var. Greenei, Gray, 1. c. A dubious form, smaller : leaves narrowly linear, with a 

 few linear lolies. — N. California, iu Scott Mountains, Siskiyou Co., in dry open ground at 

 about 7,000 feet, Greene. 



T. Nuttallii, Gray. Resembles broad-leaved forms of T. glaucum, roliust : leaves thickish, 

 from spatulate to lanceolate, from sparingly dentate to pinnatifid, a span to near a foot long 

 (the thick midrib nervose when dry): scape 6 to 20 inches liigli : head broad, an inch or 

 more high : involucre more or less pubescent : flowers yellow : thickish akene and beak each 

 3 or 4 lines long. — Proc. Am. Acad. ix. 216, «&. Bot. Calif, i. 438 (excl. pi. Nevius). Stylo- 

 pappus elatus, Nutt. 1. c. 433. Macrorhynchus elatus, Torr. & Gray, 1. c. M. grand ijioriis, 

 Eaton, Bot. King Exp. 206. Troximon aurantiacum. Gray, Bot. Calif. 1. c, as to Calif, 

 plant. — Low or moist ground, Oregon, and the Sierra Nevada in California to S. Utah; 

 perhaps flrst coll. by Nuttall. 



T. apargioid.es, Less. Low and tufted from a mnlticipital lignescent caudex, glabrate : 

 leaves linear or narrowly lanceolate, entire or witli a few salient teetii or lobes, or pinnatifid 

 with sparse linear divisions : scapes a span or two high : head half-inch high : involucre 

 campanulate; outer bracts at least pubescent: akenes and beak each 1| to 2 lines long: 

 pa])pus soft, dull white. — Linnaja, vi. 594; Gray, Bot. Calif. 1. c, partly. — Sandy soil on 

 antl near the coast, San Francisco Bay, &c., California; first coll. by Chamisso. 



•i— -i— Beak slender-fdiform or almost capillar}', 2 to 4 times the length of the short-fusiform or 

 oblong akene (this rarely over 2 lines long) : pappus soft and tine, rather flaccid: flowers all yel- 

 low. — Stylopa/jpus, Nutt. 1. c. 



++ Pappus about the length of the beak, whitish. 



T. humile, Gray. Leaves hirsutely pubescent, from spatulate and repand-dentate or lyrate- 

 pinuatifid to lanceolate or broader iu outline and pinnately parted into linear lobes : scapes 



