40G COMI'OSIT-K. Soliva. 



06. SOLIVA, Kuiz & Pavoii. 



Head mauy-flowcred, hcteiogamuus, of many pistillate and apetalous ilowci-s, and 

 a few perfect but mostly sterile ilowers in the centre. Scides of the invi)hu're ft to 

 10, nearly equal, in ono or two series, scarious-margined. Keceptaclo tiat, naked. 

 J)isk-ilowei's tubular, thickish, 2 - G-toothed ; their stylo often undivided. Akeiics 

 obcompressed, with rigid wings or callous maigins, the summit of Avhich is usually 

 pointed, and the apex armed by the indurated persistent style, destitute of pajipu-^. 

 — Small and depressed herbs of S. America (one naturalized on tlie shori's of the 

 Atlantic United States, and one seemingly indigenous to California): leaves petioled 

 and pinnately divided into small and narrow segments : heads sessile, in fruit glo- 

 bose : ilowers greenish or yellowisli. 



1. S. daucifolia, Nutt, Annual, diffuse or creeping, about a span high, soft- 

 hairy: leaves once or twice pinnately dissected into rather few linear acute divisions: 

 heads small (2 or 3 lines broad), sessile in the forks : scales of the involucre ovate, 

 acuminate : akenes minutely hairy, obovate, with the broad or narrow and thin 

 wings entire, each terminating upwards in an incurved tooth or j)uint. — Torr. vV: 

 Gray, Fl. ii. 425. 



Moist grounds neiir the coast, from Suiitii biubani to Mendocino Co. Mudi like ,V. sess-i/is of 

 Chili ; tho wings of the akcncs very variable in breadth, bioad and thin in sonic wcll-dcvclojicd 

 specimens, often wanting towards tho base of the akene, or rarely developed there into separate 

 teeth or lobes. 



Tribe VIII. SENECIONIDE^. 



Distinguished generally by the involucre of one or two series of more or less 



herbaceous ecjual scales, or calyculate with some shorter ones at base ; the p.appus of 



soft and tine capillary bristles, giuieraily more delicate than in any of tho prc(;eding 



tribes ; and tlie nutoptaclf, not chalfy. Anthers often sagittate at base, but without 



tails. Style- branches of perfect flowers various, but commonly truncate or somewh.it 



capitate at tip, rarely prolonged into an appendage. Flowers almost always yellow. 



■ Ckocidium Min.TicAi'f.F., Hook., found on the banks of the Columbia River, a delicate little 

 plant with tlio aspect of Scnccio, is likely to occur on the northwestern borders of the State. 



07. PETASITES, Tourn. 

 Head many-llowered, het(in)g!imous, more or less dioecious; the numerous pistillate 

 flowers in the margin either with filiform or (in ours) with distinctly ligulate rays. 

 Involucre campanulate or cylindraceous ; its scales nearly in a single series, and 

 usually with some small and loose subulate bracts at base. Receptacle flat. Flowers 

 in the sterile plant very numerous in the disk and rather few in the ray ; in the 

 fertile very few perfect or infertile ones at the centre, the rest pistillate. Cordla 

 of the hermaphrodite flowers with a 5-cleft limb ; their style entire or barely 

 2-lobed at the club-shaped puberulent summit. Akenes glabrous, 5 - 10-ribbed. 

 Pappus of copious long and soft capillary bristles, fewer in the sterile flowers. — 

 Herbs of northern regions ; with creeping rootstocks, sending up large radical pal- 

 mately veined leaves on long petioles, and stout scapes in si)ring, beset with scaly 

 or imperfectly foliaceous clasping bracts, and terminated by a racemose or cymo.so 

 clusterofratiier small hciids: Ilowers p\irplish or white. — J'l'fattiUs & iVardosmia, DC 



