COMPOSITE. 79 



maphrodite either sterile or fertile; or homogamous, with the flowers all hermaphrodi.e 

 aud fertile. _ Anther-tips slender and pointed. Akenes obovate or oblong, mostly with K 

 epigynous disk or summit, and no pappus. 



TRIBE VIII. SENECIONIDKE. Heads heterogamous or homo*.,,,,,,,,. Involuc 

 mostly one or two series of equal (and not scarious) bracts, sometimes unequal or 

 even imbricated, with or without loose and short accessory ones at base Recepl 

 naked. Anthers without tails at base, but not rarely sagittate. Style-branches of her- 

 maphrodite flowers most commonly truncate or obtuse, tipped with short appendages or 

 none. Pappus of numerous capillary bristles, sometimes caducous. Leaves usually 

 alternate. (Copious capillary pappus, comparatively simple involucre, short or conical 

 if any style-tips, tailless anthers, and naked receptacle, are the marks of this tribe no 

 account being here taken of the tropical American subtribe Lin/,, a.) 



* Style-branches of hermaphrodite fertile flowers roundish-obtuse, or at least not truncate 

 aud wholly without appendage or hispidity at summit, simulating Inuloidea or Eupntorl- 

 acece: pappus-bristles merely denticulate : receptacle naked, flat. Subtribe Tussilaqiwa 

 Beuth. & Hook. 



j- Heads submouoccious or subdioecious ; the hermaphrodite flowers (with rather deeply 

 5-cleft corolla) essentially sterile: akeues narrow, 5-10-costate. \\ ith cluii^uii,^ sofl 

 white pappus : involucre a series of soft herbaceous bracts, with few ..r mi loose ai c< 

 ones at base. True Tussilaginece. 



1 79. TUSSILAGO. Head solitary, yellow-flowered, moucecious : female flowers i-n several 

 series in the ray, slenderly ligulate : numerous subhermaphrodite flowers in the centre, with 

 undivided style and sterile ovary. 



180. PETASITES. Heads racemosely or corymbosely disposed, white- or purplish-flow- 

 ered, subdicecious : heads in the truly fertile plant wholly or chiefly of female flutters, with 

 slender-tubular and irregularly 2-5-toothed or distinctly ligulate corolla ; in the substerile 

 with few of these in the margin, and numerous hermaphrodite-infertile (lowers, like those of 

 Tussilayo, but their style commonly with 2-cleft or 2-toothed apex. 



-i H Heads homogainous, discoid, of wholly hermaphrodite and fertile flowers: stvle- 

 brauches very minutely granular-puberulent. 



-H- Corollas yellow, rather deeply 5-cleft, the lobes lanceolate: authors much inserted and 

 with lanceolate tips: akenes linear, glabrous: involucre hardly herbaceous, simple, of 

 carinately one-nerved narrow bracts, and with few and small or no accesson bracts. 



181. CACALIOPSIS. Heads very many-flowered. Involucre broadh campanulas-, i.f 14 

 to 30 lanceolate-linear mostly acuminate bracts. Corolla with the eyh'ndraceons throat rather 

 longer than the slender tube. Anthers entire at base. Style puberuleut for some distance 

 below the slightly flattish branches. Akenes 10-striate. 1'appus very copious, soft and 

 white, equalling the corolla. Leaves palmately lobed, petioled. 



182. LUINA. Heads about 10-flowered. Involucre oblong-campanulate, of 8 to 10 linear 

 bracts. Corolla of the preceding, or the throat more ampliate. Anthers sagittate at liase. 

 Style glabrous, its flattened and linear branches obscurely papillose <>n I lie hack, truiicately 

 obtuse. Akeues (immature) obscurely 10-striate. Pappus of the preceding, but less 

 copious. Leaves entire, veiny, sessile. 



H- -H- Corollas yellowish, obtusely 5-toothed- anthers little exserted, with oval obtuse tips : 

 involucre mostly foliaceous ! 



183. PEUCEPHYLLUM. Heads 12-25-flowered. Involucre campanulate, of nninrroiis 

 subulate-linear or almost filiform nerveless bracts which resemble the leaves, in about :> 

 series, some of the outer looser and similar to the uppermost leaves. Corolla with very 

 short proper tube and long cylindrical throat; the 5 teeth short, ovate, obtuse, erect, ob- 

 scurely puberulent. Anthers minutely sagittate at ba>e. Style-branches linear, ilattisli or 

 semiterete, obscurely papillose-puberulent, the very obtuse tip wholly destitute of appendage. 

 Akenes turbiuate-oblong, obscurely 10-striate, very hirsute. 1'appus short,. r than the co- 

 rolla, of very numerous and unequal rather sordid and roughish capillary brinks. Leaves 

 short-filiform, crowded. 



