Troximon. COMPOSIT.E. 439 



from a span to a foot higli, slender : involucre permanently villous with apparently some- 

 what viscid hairs : ligules exserted : closed head in fruit from half-inch to hardly inch high : 

 filiform beak only about twice the length of the whitish akene. — Proc. Am. Acad. xix. 72. 

 Leontodon hirsutum, Hook. Fl. i. 296, therefore Taraxacum hirsiitum, Terr. & Gray, Fl. ii. 

 494, ex char. Barkhausia Lessinrjit, Hook. & Arn. Bot. Beech. 145, excl. syn. Macro- 

 rhi/)ichiis Lessingii, Hook. & Arn. 1. c. 361, excl. syn., for it is not Lessing's plant described in 

 Linnaa. M. humilc, Benth. PI. Hartw. 320, a small form. M. Harfordii, Kellogg, Proc. 

 Calif. Acad., a larger form. Troxivwn apargioides in part, Gray, Bot. Calif. 1. c. — California 

 near the coast, from Monterey to Washington Terr. Variable in size, the flowering head 

 sometimes nearly as large as in T. grandijlorum. 



-H- +-I- Pappus much shorter than the almost capillary beak, usually bright white. 



T. laciniatum, Gray, 1. c. Smooth and glabrous, or with sparse soft pubescence : leaves 

 elongated-lanceolate, laciniate-dentate or commonly deeply pinnatifid into linear lobes : 

 scapes a foot or two high: involucre glabrous or glabrate, or base of the outer of the lan- 

 ceolate bracts tomentose : closed head in fruit not over inch high : akene 2 and beak 5 to 7 

 lines long. — Stijiopappus laciniaius (original specimen, and one like it from Vancouver's 

 Island-, Lf/all, small and with small immature heads, but apparently of the species) and 

 especially var. hmgifolius, Nutt. 1. c. Macrorht/nchus laciniaius, & var., Torr. & Gray, 1. c. 

 Troximon grand ijlontm, var. tenuifolium & var. laciniatum, Gray, Bot. Calif. I.e. — Low 

 ground, Brit. Columbia to Oregon, and California to San Francisco Bay or nearly. 



T. grandiflorum, Gr.vy. Leaves hirsutely or cinereous-pubescent, or glabrate, spatulate to 

 lanceolate, sinuate-dentate to laciniate-pinnatifid, or even pinnately parted : scapes stout, a 

 foot or two high : in^■olucre broad, usually well imbricated ; the bracts lanate or tomentose 

 when young, often glabrate in age : ligules short : head in fruit an inch to inch and a half 

 high: akene 2 and capillary beak 6 to 8 lines long. — Proc. Am. Acad. ix. 216, & Bot. 

 Calif. 1. c, excl. vars. Stylopappus grandiflorus, Kutt. 1. c. Macrorlujnclms grandijforus, 

 Torr. & Gray, 1. c. — Plains and moist hillsides, Washington Terr, to S. California, toward 

 the coast. Some forms seem to pass into the preceding. 



* * Perennial, with habit of the last preceding species : akene abruptly long-bcakcd from a 

 broad truncate summit. 



T. retrorsum, Gray, 1. c. Villous-tomentose w^hen young : leaves pinnately parted into 

 linear-lanceolate usually retrorse lobes, the terminal lobe long and narrow, all callous-tipped : 

 scapes about a foot higli: involucre narrowly oblong, H to 2 inches high when mature ; its 

 narrow linear bracts hardly surpassed by the soft white pappus : ligules short : akene 3 lines 

 and filiform beak about an inch long. — Macrorhijnchus retrorsus, Benth. PI. Hartw. 30; 

 Gray, in Wilkes Exp. xvi. 373. M. angustifolius, Kellogg, Proc. Calif. Acad. v. 47.— 

 Open pine woods, California, from Mendocino and the Upper Sacramento to mountains of 

 San Bernardino; first coll. by Pickering & Brackenridge , then by Ilartiueg. Also in S. AV. 

 Idaho, Nevius. 



* * * Annuals, slender, mostly low, occasionally subcaulescent : flowers yellow. — Macrm-liyn- 

 cliu.% Le»s. Syn. 137, but " acheiiium plano-obcompressum " is enoneous. Kijmapleui'a in 

 corrig. (Macrorhynchus in text) & Cryptopleura , Nutt. Trans. Am. Phil Soc. vii. 430. 



T. heterophylluiB, Greene. Somewhat villosely or hirsutely pubescent, or glabrate: 

 leaves from spatulate to linear-lanceolate, denticulate to pinnatifid : scapes a span or two 

 (rarely a foot) high: involucre oblong-campanulate, half to three-fourths inch high; its 

 bracts erect, lanceolate or narrower ; outer decidedly shorter than the glabrous inner ones, 

 more or less pubescent with simple or gland-tipped hairs (not villous) : akenes various but 

 at most 2 lines long, usually fusiform ; filiform beak fully 3 lines long, mostly longer than 

 the white or whitish pappus. — Bull. Torr. Club, x. 88; Gray, Proc. Am. Acad. xix. 72. 

 T. Chilense, Gray, Proc. Am. Acad. ix. 216, & Bot. Calif, i. 439. Macrorhynchus heterophijUus 

 & Cryptoplewn Californica, Nutt. 1. c. M. Californicus & M. heterophyllus, Torr. & Gray, FI. 

 ii. 493. M. Chilensis, Hook. Lond. Jour. Bot. vi. 2.56. — Open and low ground throixghout 

 California, at least near the coast, to Brit. Columbia, and east to Utah. — Varies mainly in 

 the akenes ; these generally glabrous, occasionally outer ones pubescent or hirsute ; some- 

 times all alike and from 10-striate to acutely 10-costate; sometimes the outer ones more 

 acutely or even alately costate, and passing into the following forms described by Nuttall, 

 even taken as of different and peculiar genera, but they are rather conditions than varieties. 



