RrickelUa. COMPOSITE. 299 



lower opposite, the upper alternate, and long naked peduncles bearing solitary 



heads. — Walp. Repert. vi. 106 ; Berith. & Hook. Gen. ii. 243. Helogyne, Benth. 



Bot. Sulph. 20, t. 14, not of Nutt. 



Neither of the two known species have yet been found within the actual limits of the State, one 

 being farther south, the other southeast. 



1. H. fasciculata, Walp. Scales of the involucre very numerous and closely 

 apprcssod, scarcely striate : akenes slender, flattish, hispid on tlie lateral angles : 

 pappus of 2 or 3 almost barhollate awns ami as many broad clmlly scales which are 

 truncate and lacerate at the summit: leaves palmately 3-r)-parted or cleft, and 

 with the divisions sinuatedobc*!. — Ilelnr/pie /(tacimldfa, U(>iith. Bot. Sulph. I. c. 



Var. Xanti, Gray, Avith the leaves round-renifonu and luostly only obscurely 

 lobed. — Proc. Am. Acad. v. 158. 



Lower California, Magdalena Bay, Hinds. Cape San Lucas, Xantus, the variety. 



2. H. pluriseta, Gray. Scales of the involucre striate, looser and fewer (20 to 

 25): akenes shorter, terete - 5-angular, pubescent: pappus of 10 to 12 slender 

 barely scabrous awns or bristles and as many narrow acute or pointed chaffy scales : 

 leaves small, acutely and irregularly cleft or incised. — I'acif. 11. Rep. iv. 96, t. 9. 



San Bernardino Desert to Williams' River and cafions of the Colorado, Bigclow, Newberry, 

 Parry. 



2. EUPATORIUM, Toura. 



IToad 3 - raany-flowered. Involucre various. Receptacle naked. Corollas 6- 

 lobed or 5-toothed. Akenes 5-anglcd, with no intermediate ribs. Pappus of 

 numerous rather rigid capillary scabrous bristles, forming about a single series. — 

 Perennials, mostly with opposite leaves. 



A huge and widely dispersed genus, copious in the Atlantic States, extremely scanty in those 

 of the Pacific, two species barely reaching California. 



1. E. occidentale, Hook. Almost glabrous, slightly glandular, a foot or two 

 high from a sulfrutescent base : leaves commonly more or less alternate, on very 

 short petioles, ovate, triple-ribbed near the base, somewhat serrate : corymbs small 

 in a crowded panicle: heads 15 - 25 flowered : scales of the involucre in nearly a 

 single series, shorter than the pink or pinkish flowers. 



From oostorn slopes of the Sierra Nevada south to Ebbcti's Pass and the Yosemito Valley ; not 

 rare in Nevada and the interior of Oregon, in cahons, kc. 



2. E. sagittatum, Gray. Minutely puberulent : leaves all opposite, petioled, 

 hastately sagittate, entire : heads single or in threes at tlie ends of the diverging 

 branches, peduncled : involucre imbricated, cylindrical, 30- 40-flowered ; the scales 

 coriaceous, appressed, with conspicuous foliaceous spreading tips : akenes glabrous 

 with the sharp angles hispid. — PI. Wright, i. 88, note. 



Southeastern part of California probably (294, coll. Cou/der),' and adjacent parts of Mexico. 



3. BRICKELLIA, Ell. 



Head several - many-flowered. Involucre of imbricated striate-nerved scales, the 

 outer shorter. Receptacle naked. Corollas slender, 5-toothed or with 5 short 

 lobes. Style bulbous at base, the branches commonly thickened upward. 

 Akenes 10-striate or ribbed. Pappus of numerous scabrous or barbellato capillary 

 bristles, about in a .single series. — Herbaceous perennial or partly shrubby plants, 

 commonly rather glandular or viscid or dotted, most resembling I'Uipatnrium, except 

 in the many-ribbed or striate akenes ; the flowers white, whitish, or flesh-color. — 

 Gray, PI. Wright, i. 84. BricMlia, in part, Bu/hnxft/lin, <^' Clavipera, DC 



A genus of about 40 species, with headquarters southeast of California. b,it scantily represented 

 within the State. 



