Orindelia. COMPOSITyE. 3q?j 



1. A. Fremontii, Gray, 1. c. .Shrubby, 1 to 2 f.iet lii-li : leaves oljovate-spatu- 

 late, acuminate, shoit: heads sessile in compound corymbose clusters: involucre 

 (barely a quarter of an inch long) of 7 to 9 oval and obtuse thinnish scales, the tips 

 of which are obscurely greenisli : ray-flower only one, with a short obovate ligule 

 and a pappus nearly as long as its tube, composed of numerous narrow chalfy scales 

 united below into an irregularly clelt cup or crown : disk-flowers about fj, with 

 apparently Avell-formed but sterile ovary, nnd a pappus of about 20 flattish more 

 or less tortuous denticulate-hispid bristles, some of thera occasionally united or 

 sparingly \ivs.i\Q.\\Qi\. — Amphipappus Freviontii, Terr. & Gray, in Jour. iJost. Nat. 

 Hist. Soc. V. 4, & PI. Fremont. 17, t. 9. 



On tlie Mohavo River and in the vicinity of the Colorndo, April : fonnd only by Fremont. 

 Benllmni and Hooker (Gen. PI. ii. 250), recognizing the nflinity of this with Amphiadiyris dm- 

 cunmloides, refer them both to Gutierrezia ; but it seems preferable to keep up the genus Amphi- 

 achyris and refer this peculiar and rare species to it. 



8. GRINDELIA, Willd. Gum-plant. 

 Heads solitary, terminating leafy branches, or occnsionally moro or less corymbose, 

 heterogamous with the rays fertile, or in one species homogamous (rayless), many- 

 flowered. Involucre hemisph.eriail or globular, commonly coated with resin or 

 balsam ; its scales very numerous, imbricated, narrow, with coriaceous appressed 

 base and slender more or less spreading or squarrose green tips. Receptacle flat or 

 convex, foveolate. Kays numerous, narrow. P.ranches of the stylo tipped with a 

 lanceolate or linear appendage. Akenes compressed or turgid, or the outermost 

 somewhat triangular, glabrous, truncate. Pappus of 2 to 8 caducous awns or stout 

 corneous bristles. — Biennial or perennial and mostly coarse herbs, with sessile or 

 partly clasping leaves, often viscid or resinous, and middle-sized or rather large 

 heads of yellow flowers ; flowering in summer. — Torr. & Gray, Fl. ii. 246. 



A characteristic genus of the plains west of the Mississippi, extending to the Pacific coast and 

 to Mexico, with two or three species in similar regions of South America, not o%-er a dozen or so 

 in all. But they are difficult of discrimination, especially the western species, which are all dif- 

 fi'rent from the eastern. Some good characters may be furnished by the ripe akenes, which are 

 known in few sjiecies. 



Tho balsninin ro.iln which oxudes from the herbage, most Inigely from thn forming hendfi, in 

 used mediciimlly, CHi^n'clnlly as a remedy for tho PITetits of Poison Ouk (AVmm lobnln). Kltlior tho 

 bruised plant is applied directly, or a decoction or alcoholic infusion. 



* Stems a foot to a yard high, leafy : leaves from obovate to lanceolate. 



1. Gr. hirsutula, Hook. & Am. Hirsutely pubescent or sometimes almost tomen- 

 tose with soft spreading hairs, or lower part of the stem glabrous, one to three feet 

 high : leaves sharply and irregularly serrate, from lanceolate to oblong, the lower 

 spatulate, uppermost usually with broad clasping base : awns of the jiappus 2 or 3, 

 flattish, nearly smooth. — P.ot. I)00ch. 147. 6^. mhricaulis, DC. Prodr. v. .316. 



Under redwoods, &c., from Monterey northward, extending along the coast to Puget Sound. 

 Known by the pubescence, ami iisnally by the red or purpiisli stem : the involucre sometimes 

 tomentose, sometimes almost naked ; the tips of the scales, as in other si>ecies, either straight or 

 squarrose. 



2. Gr. glutinosa, Dunal. Glabrous : leaves obovate, oblong, or oblong-spntu- 

 late, rounded at apex, sharply serrate above the middle : scales of the iiivolucro with 

 short tips : pappus of 5 to 8 rigid flattened chaff-like awns, their thin edges sparsely 

 serrulato-ciliolate. — A/tter r/lutiiiofus, Cav. Ic. ii. t. 168. 



Sandy moist grounds, on the coast, Fort Point and bobos Crerk, near .Snn Francisco ; intro- 

 duced (0. The original of this s|>ecios is said to have come tVoin Southern Peru (not Mexico), n 

 ilistiict which bna given not a few plants to tho coast M' California. 



