438 COMPOSITE. Troximon. 



2. Akenes oblong or fusiform, mostly acute or narrowed at base, and somewhat 

 obliquely inserted by a small distinct callus (outermost occasionally pubescent), 

 the apex produced into a long (usually very long] and filiform or capillary 

 nerveless beak: pappus fine and soft, tardily deciduous. MACRORHYNCHUS. 

 (Macrorhynchus, Less., DC.) 



* Root perennial : akenes either gradually or abruptly tapering into the slender and 



filiform beak. 



3. T. apargioides, Less. A span to a foot or so high from a long and often 

 large fusiform root, hirsute or glabrous: leaves variously pinnatifid or laciniate: 

 scapes slender, ascending : head middle-sized or rather small : akenes linear-fusif rm, 

 acutely or the inner ones lightly ribbed, nearly equalling or a little shorter than the 

 beak. Linnsea, vi. 501. Barkhausia Lessingii & Macrorhynchus Lessingii, Hook. 

 & Am. Bot. Beechey, 145, 361. M. humilis, Benth. PI. Hartw. 320. M. Har- 

 fordii, Kellogg. 



Sandy or marshy grounds ; common along the coast, from Monterey to Oregon. This species 

 is well described in the remark that it resembles Apnrgin, autumnnlis (i. e. Lcontodon autumnale), 

 and also, in its smaller form, Krigia Viryinica. Like these the foliage is very variable. Involu- 

 cre from 6 to 9 lines high ; the outer scales sometimes more foliaceous. Akenes 2 lines and the 

 beak 2 or 3 lines long. 



4. T. Nuttallii, Gray. About a foot high : leaves glabrous, varying from ob- 

 long-spatulate and laciniate-pinnatifid to linear and entire : scapes rather stout and 

 head rather large : scales of the involucre narrow : akenes fusiform-linear, slender, 

 finely and closely ribbed, equalling the beak in length. Proc. Am. Acad. ix. 216. 

 Stylopappus elatus, Nutt. 1. c. Macrorhynchus elatus, Torr. & Gray, 1. c. 



Meadows, from the Yosemite Valley (Bolandcr) to Oregon, Nuttall, Hall, Nevius, &c. Head 

 about an inch high. Akenes 4 lines and the beak 3 or 4 lines long. 



5. T. grandifloi'um, Gray. Hirsutely pubescent or almost glabrous : leaves 

 lanceolate or oblanceolate, mostly laciniate-pinnatitid, the lobes ascending or spread- 

 ing : scape one to 2| feet high : head large (an inch high) : outer scales of the in- 

 volucre commonly loose and foliaceous, varying from ovate to lanceolate : akenes 

 short-fusiform or oblong, abruptly tapering into the capillary beak of several times 

 its length. Proc. Am. Acad. ix. 216. Stylopappu* grandifiorus, JS T utt. 1. c. 

 Macrorhynchus grandifiorus, Torr. & Gray, 1. c. 



Var. teiiuifolium, Gray. More slender, and heads somewhat smaller : leaves 

 pinnately parted into narrow linear divisions. Stylopappus laciniatus, var. longi- 

 folius, Nutt. 1. c. 



Var. laciniatum, Gray. More slender and heads much smaller : outer scales of 

 the involucre not dilated : leaves lanceolate or linear and variously laciniate. 

 Stylopappus laciniatus, Nutt. 1. c. 1 



Meadows and hillsides, from Monterey Co. along the coast range to Oregon. The var. tcnui- 

 folium has been collected only in Oregon and Washington Territory. The species is well marked 

 when in fruit by the short and small akenes (only 2 lines long), with very long and capillary 

 beak, 6 or 8 lines long. 



* * Root perennial : akenes abruptly beaked from a truncate apex. 



6. T. retrorsum, Gray, 1. c. Almost woolly when young with soft loose hairs, 

 or glabrate : leaves nmcinately and deeply pinnatifid, the linear-lanceolate lobes all 

 turned downwards, the apex usually prolonged and entire, all tipped with a callous 

 gland : scapes about a foot high : head large (1| inches long in fruit) but narrow: 

 outer scales of the involucre short and lanceolate, the inner long and linear : akenes 

 short-linear, closely 10-ribbed, their callous or slightly broadened summit very obtuse 

 or truncate at maturity ; the capillary beak very long. Macrorhynchus retrorsas, 

 Benth. PI. Hartw. 320 ; Gray in Bot/Wilkes Exp. 373. M. angustifolius, Kellogg 

 in Proc. Calif. Acad. v. 47, a small form of the species. 



