314 DESCRIPTIONS OF NEW SPECIES 



GRINDELIA. (WiUd.) 



Grindelia *r6busta; herbaceous, smooth; leaves cordate-oblong, obtuse, am- 

 plexicaule, coarsely serrate, scabrous on the margin, the upper ones acute, 

 nearly entire; capituli corymbose, involucrum squarrose and leafy at base; re- 

 ceptaculum paleaceous near the margin, pappus of two setae. 



Hab. St. Pedro, Upper California. Flowering in April. A very stout and robust species, about 

 eighteen inches high, apparently biennial, very smooth ; leaves about an inch broad, an inch and a 

 half long. Rays forty to fifty, flowers very large, more than twice the size of those of G. squar- 

 Tosa, which this species much resembles, but the leaves are broadest at the base. Stigma hirsute, 

 pointed, but little exserted. 



Grindelia ^virgata; smooth or pubescent, herbaceous, (biennial;) stem vir- 

 gate, cylindric, tall and slender, branching towards the summit, branches 

 mostly one-flowered, fastigiate; leaves linear-oblong, or oblong-lanceolate, very 

 acute, entire; or serrulate, semiamplexicaule; involucrum glutinous, the lower 

 sepals filiformly attenuated and spreading; rays neuter, pappus of two to three 

 setae. 



Hab. Forests of Oregon, near Fort Vancouver, &;c. Nearly related to the G. integrifolia, but 

 the leaves are narrow, not ovate, and resemble those of a willow. Stem slender, twiggy and 

 tough, three to four feet high, terminating in about five or six flowers, about the size of those of 

 G, squarrosa. Leaves about three inches long, half an inch wide, above, all entire, diminishing 

 much in size on the branchlets, pungently acute. Radical leaves spathulate-linear. AUied to G. 

 strida, Decand., but with a squarrose involucrum. 



Grindelia * nana; perennial, smooth and glandularly punctate ; many low, 

 decumbent stems from the same root, terminating in a single flower, or in a 

 few-flowered corymb ; leaves narrow lanceolate or oblong, sessile, narrowed be- 

 low, serrate, those of the branches near the flower often minute, entire; sepals 

 with short, reflected tips, which descend to the branch; rays few, (sixteen,) 

 scarcely styliferous; pappus of about two setge. 



Hab. With the above. Nearly allied to G. humilis of Hook, and Arn. /3. * integrifolia; leaves 

 nearly entire, involucrum globular, squarrose to the base. 



Obs. — Scarcely a foot high, usually decumbent, or assurgent. Lower leaves 

 often incisely serrate, linear-lanceolate, narrowed below. Rays a little longer 

 than the disk; involucrum glutinous. In the entire leaved variety the leaves 

 are smooth on the margin; perhaps a distinct species; allied to G. integrifolia 

 of Decandolle. 



