Pentachceta. COMPOSITiE. 119 



G. glutinosa, Dunal. Herbaceous nearly or quite to the base ("frutieose," Cav.), afoot 

 or two higli : leaves rather large, obovate or spatulate, mostly i-ounded at summit and with 

 partly clasping (broad or narrowish) base, more or less serrate : heads large: involucre half 

 to three-fourths inch high, its bracts close, acute or acuminate, with no prolonged squarrose 

 tips : akeues obscurely if at all bordered at summit : pappus-awus 5 to 8, stout and flattened, 

 sparingly ciliolate-scabrous or nearly smooth. — Mem. Mus. 1. c. 49; DC. Prodr. v. 314; 

 Gray, 1. c. 303. Aster gtudnosus, Cav. Ic. ii. 53, t. 168. Doronicum ghitinosum, Willd. Spec, 

 iii. 2115. Inula gUttinosa, Pers. Syu. ii. 452. Donia (jiutirwsa, R. Br. in Ait. Kew. ed. 2, v. 82. 

 Demelria glutinosa. Lag. Nov. Gen. & Spec. 30. Aurelia decurrens, Cass. Diet, xxxvii. 468. 

 ^(Tlie pappus-awus in old-time cultivated specimens sparsely hirtello-ciliolate indeed, but not 

 as figured by Cavanilles ; in Californian specimens varying from obscurely so to smooth.) 

 Grinddia itttifolia, Kellogg, Proc. Calif. Acad. v. 36. — Shore of California, from Humboldt 

 Co. {Bo/under) and Sjin Francisco Bay to Santa Barbara Islands, whence a very large-leaved 

 and robust form was described by Kellogg. Fl. summer. (" Mexico," Cavanilles. "Peru," 

 Beutham in Gen. Original habitat seemingly quite unknown, but doubtless it came from 

 the Pacific shores.) 



G. robusta, Nutt. Herbaceous to the base, rigid, branching, usually glutinous in the man- 

 ner of G. squarrosa, which it resembles in the attenuate-acuminate and squarrose spreading 

 or recurved tips to the involucral bracts : leaves more rigid and larger, oblong, varying to 

 lanceolate, rigidly spiuulose-serrate or denticulate, or uppermost entire : heads usually half- 

 inch high : akenes (at least outer ones) obliquely auriculate or broadly unidentate at summit : 

 pappus-awns 2 or 3, rarely more. — Trans. Am. Phil. Soc. 1. c. 314 ; Torr. & Gray, 1. c. ; Gray, 

 Bot. Calif. 1. c, excl. vars. latifoUu & angustifolia in part, incl. var. rigida. G. squarrosa, 

 Hook. & Am. Bot. Beech. 147, not Duual. — The common Gum-plant of California, coiumon 

 tliroiighout the western part of the State, on dry hills, &c. : fl. summer. 



G. nana, Ndtt. Rather low and slender, 6 to 30 inches high, the larger plants corymbosely 

 and freely branched above : leaves thinnish, lanceolate and linear, or the lower spatulate, 

 entire or spinulose serrate : heads small (a quarter to a third of an inch high): bracts of 

 the involucre with slender and squarrose soon revolute tips, in the manner of G. squarrosa 

 (which this species represents northwestward): rays 16 to 30: akenes narrow, excisely 

 truncate or bideutate at summit: pappus-awus mostly 2. — Trans. Am. Phil. Soc. 1. c. 314. 

 G. humilis, Torr. & Gray, Fl. ii. 248, not Hook. & Arn. G. Pacijica, Marcus E. Jones in 

 Bull. Torrey Club, ix. 31, in a habitat much out of range; namely, at Santa Cruz, Califor- 

 nia. — Washington Terr.- and east to N. W. Wyoming, south to Shasta, California. Some 

 Oregon specimens have heads as large as those of G. squarrosa, but the akenes are different. 

 Var. discoidea, a rayless state of the species. — G. discoideu, Nutt. 1. c. 315, not 

 Hook. & Arn. — Oregon and AVashington Terr., Nuttall, &c. 



* * * Anomalous and obscure species, wholly glabrous : cauline leaves all very small and 

 narrow, almost filiform. 



G. humilis, Hook. & Arn. Not glutinous, apparently perennial: stem simple, slender, 7 

 inches high, 2-ceplialous at summit : radical leaves linear, 2 inches long, 2 lines wide at the 

 obtuse obscurely denticulate apex, thence gradually tapering to base ; cauline nearly all 

 small and bract-like, all but lowest half-inch long, not over one third of a line wide, 

 attenuate-acute, involucre half-iuch high; bracts lanceolate, acute, largely green, erect, the 

 oiiter successively shorter : rays rather long : bristles of the pappus apparently 3 or 4, 

 slender. — Bot. Beech. 147. — Single .specimen known, "California, Beechey," therefore 

 probably from Monterey. Very unlike any other. 



24. PENTACH^TA, Natt. (neVre, five, xa^H bristle; from the pap- 

 pus of the original species.) — Californian annuals, low and slender, often depau- 

 perate, glabrous and smooth or with some pubescence ; with filiform-linear and 

 entire alternate leaves, heads terminating the pedunculiform summit of the stem 

 and loose branches, with either homochromous or heterochromous flowers, pro- 

 duced in spring. — Trans. Am. Phil. Soc. n. ser. vii. 33G; Gray, Proc. Am. 

 Acad. viii. G33, & Bot. Calif, i. 305. Fentachceta & Aphantochceta, Torr. & 

 Gray ; Bentli. «& Hook. Gen. ii. '2b\. (See p. 445.) 



