COMPOSITE. 363 



-I— -1-- Suffrulescent species. 



6. G. paliidosa, Greene, 1. c. About 5 ft. high, sterile leafy shoots a 

 foot high, or more, surviving the winter, the plant otherwise herba- 

 ceous ; herbage glabrous except the scabrous-ciliolate leaf-margins ; 

 only the involucres glutinous : leaves slightly fleshy, oblong-lauceolate 

 to spatulate-oblong, 2 — 3 in. long, conspicuously serrate, at least those of 

 sterile shoots with a broad cordate-clasping base, the lobes surrounding 

 the stem : involucre squarrose : achenes with prominent turgid angles, 

 those of the ray triquetrous, of the disk compressed : awns 2 only, even 

 in the ray, stout, strongly fattened. — Brackish marshes of Suisun Bay. 



7. a. cuueifolia, Nutt. Trans. Am. Phil. Soc. vii. 315 (1840), Bushy, 

 2 — 4 ft. high, glabrous : leaves thickish and rather fleshy, 3 — 4 in. long, 

 cuueate-spatulate to linear-oblong, entire or sharply denticulate, clasp- 

 ing though not auricled at the bro^d base ; involucre ^^ in. high, glu- 

 tinous, the bracts all with squarrose green tips : pappus-awns usually 

 several, compressed, barbellulate. — Borders of salt marshes and along 

 tidal sloughs about S. F. Bay and southward along the coast. 



Two other Grindelia species have been attributed to our district, one 

 of which is certainly fictitious, the other probably so. G. humilis, H. 

 <fe A., is based on an abnormal twig broken off from a shrubby species 

 and described as a small herb. G. Pacifica, M. E. Jones, obtained at 

 Santa Cruz, and described as 6 inches high, and as having filiform root- 

 leaves, oblanceolate stem-leaves, and lax involucral scales, may be an 

 abnormal state of some herbaceous species. 



7. PENTACHiETA, Nutlall. Slender almost glabrous small vernal 

 annuals. Leaves alternate, linear, entire. Involucres solitary, hemi- 

 spherical or campauiilate, of thin ncarious-margiuedappressed mucronu- 

 late bracts in 2 series. Rays white, yellow, or wanting. Disk-corollas 

 yellow, very slender. Style-appendages filiform-subulate, hispid. 

 Achenes pubescent. Pappus of 3 — 5 slender bristles. 



* Floivers of both disk and ray yelloiv. 



1. P. aurea, Nutt. Trans. Am. Phil. Soc. vii. 336 (1840). DifFnsely 

 branching, 4 — 12 in. high : heads rather large and many-fiowered, the 

 rays often 40 or more : involucral bracts broadly lanceolate, setaceously 

 acuminate, with green middle portion and scarious margins : achenes 

 somewhat villous-pubescent ; pappus-bristles 5 — 8. — Common in the 

 extreme southern part of the State ; occurring as far northward as San 

 Luis Obispo Co. 



