COMPOSITiE. 79 



maphrodite either sterile or fertile ; or homogamous, with the flowers all hermaphrodite 

 aud fertile. Auther-tips slender and pointed. Akeues obovate or oblong, mostly with small 

 epigynous disk or summit, aud uo pappus. 



Tribe VIII. SENECIONIDEJil. Heads heterogamous or bomoganious. Involucre 

 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. Receptacle 

 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 Liuhcce.') 



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

 and wholly without appendage or hispidity at summit, simulating Iriuloideie or Eupatori- 

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

 Benth. & Hook. 



-1— Heads submouoecious or subdio-cious ; the hermaphrodite flowers (with rather deeply 

 5-cleft corolla) essentially sterile : akeues narrow, 5-10-costate, with elongating soft and 

 white pappus : involucre a series of soft herbaceous bracts, with few or no loose accessory 

 ones at base. — True Tuss/lar/inece. 



179. TUSSILAGO. Head solitary, yellow-flowered, monoecious : female flowers in several 

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

 undivided style aud sterile ovary. 



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

 ered, subdiojcious : heads iu the truly fertile plant wholly or chiefly of female flowers, with 

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

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

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



-1— -f— Heads homogamous, discoid, of wholly hermaphrodite and fertile flowers : style- 

 branches very minutely granular-puberulent. 



++ Corollas yellow, rather deeply 5-cleft, the lobes lanceolate : anthers much exserted and 

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

 carinately one-nerved narrow bracts, aud with few and small or uo accessory bracts. 



181. CACALIOPSIS. Heads very many-flowered. Involucre broadly campanulate, of 14 

 to 30 lanceolate-linear mostly acuminate bracts. Corolla witli the cyliudraccous throat rather 

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

 below the slightly flattish branches. Akenes 10-striate. Pappus 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 tiie throat more ampliate. Anthers sagittate at base. 

 Style glabrous, its flattened and linear brauches obscurely papillose on the back, truncately 

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

 copious. Leaves entire, veiny, sessile. 



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

 involucre mostly foliaceous ! 



183. PEUCEPHYLLUM. Heads 12-2.5-flowcred. Involucre campanulate, of numerous 

 subulate-linear or almost filiform nerveless bracts which resemljlo the leaves, in about 2 

 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 puberuleut. Anthers minutely sagittate at base. Style-branches linear, flattish or 

 semiterete, obscurely pai)illose-puberulent, tlie very obtuse tip wholly destitute of appendage. 

 Akc^ncs turbinate-oblong, obscurely 10-striate, very hirsute. Pappus shorter tliau the co- 

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

 short-filiform, crowded. 



