COMPOSITE. 73 



H Involucre many-flowered, from hemispherical to cylindraceous ; the bracts strictly erect, 

 not membranaceons, persistent, from oblong to oval, more <>r less c:iriii:itt.-coi]c;ive "in fruit 

 and partly receiving the subtended akeue : herbage mostly floccose woolly, not impri 

 punctate nor resinous-atom if erous : leaves alternate or opposite. 



142. SYNTRICHOPAPPUS. Involucre narrow, of about 5 equal and oblong carinate- 

 concave thinnish-herbaceous bracts, which are partly wrapped around the rav-akenes. Re- 

 ceptacle flat. Kay-flowers about 5, with oval ligules 3-lobed or toothed at summit. 

 Disk-corollas with very short proper tube, and elongated funnelform or cvlindraceous tin 

 the stamens therefore inserted near the base; lobes 5, ovate-oblong. Anther-lips slnder, 

 long-lanceolate or linear. Style-tips elongated-lanceolate, acute, flattened, of the Asteroid 

 type. Akenes linear-turbinate, 5-costate or angled, hairy. Pappus of numerous barbellu- 

 late white bristles in a single series, rather shorter than the disk-corollas, pak-aceouslv and 

 somewhat unequally imited into a ring at base, deciduous, or in the second .-pecies wanting. 

 Low and branching annuals, short-peduucled. 



143. ERIOPHYLLUM. Involucre from hemispherical-campanulate to oblong, commonly 

 equalling the disk, of one or sometimes two series of oblong or narrower finn-herliaceons or 

 coriaceous permanently erect bracts, either distinct or sometimes partiallv united into a cup, 

 at least in fruit concave or concave-carinate at centre, into which concavity the MiKtended 

 akenes are partially received. Receptacle from convex or rarely conical to plane. Ilav- 

 flowers usually with broad ligules, very rarely none. Disk-corollas with distinct and some- 

 times slender proper tube. Style-tips truncate, obtuse, or obscurely capitellate-conical. 

 Akenes narrow, from clavate-linear to ctincate-oblong, mostly 4-angled. Pappus of ner\ 

 and mostly pointless (rarely awucd or setiform) pale*. Floccose-tomentose or rarely glabrate 

 herbs, rarely suffruticose. 



f H Involucre many- (at least 12-20-) flowered ; the bracts wholly herbaceous, not colored 

 nor scarions-tipped, broad or broadish, plane or merely concave, equal and in a nngle or 

 hardly double series, not embracing akenes: receptacle small: corolla-lobes or teeth 

 short: herbage destitute of impressed punctures and resinous atoms, not tlocco.-e-lanate. 



144. BAHIA. Involucre hemispherical or obovatc and lax or open in fruit; the piano, 

 bracts distinct to and commonly narrower at the base. Receptacle small, mostly flat. 

 Female flowers with exserted ligules, or rarely none. Style-tips truncate or ol.tuse. Akenes 

 narrow, quadrangular. Pappus (rarely wanting) of several scarkms pal-a.-, with callous- 

 thickened opaque base, which is sometimes extended into a strong midnerve (costaj. 



145. AMBLYOPAPPUS. Characters of Dahia : but involucre of only ."> to 6 broadly 

 obovate bracts, their centre in age more or less carinate-concave ; small receptacle conical; 

 head discoid; corollas all short-tubular, and in the few female flowers minutely 2-3-toothed, 

 shorter than the style, in the hermaphrodite flowers 5-toothed, the teeth soon comment. 

 Akenes elongated-obpyramidal, pubescent. Pappus of 8 to 12 oblong obtuse rather firm 

 pale*, with merely thickened base and no costa, nearly equaUing the corollas. 



^ 4_ 4_ Involucre 3- 9-flowered; its bracts few, equal, broad and with roundish more or 

 less scarious-petaloid summit, concave-carinate : corollas only 5-toothed : herbage minutely 

 impressed-punctate and resiuous-atomiferous. 



146. SCHKUHRIA. Heads effusely paniculate. Involucre clavate-turbinate or obpyrami- 

 dal of 4 or 5 erect bracts and sometimes an accessory bractlet at base. Receptacle verj 

 small Female flowers only one or two, with a short or sometimes obsolete ligule not ex 

 ceeding the hermaphrodite flowers, or altogether wanting. Akenes obpyramidnl-tetragonal, 

 the faces not rarely 2-3-striate. Pappus of 8 scarious pale*, the larger often equalling 

 short corolla, either nerveless with callous-thickened base, or with a prominent . 



or their divisions filiform. 



+. +_ n_ H_ Involucre many- (rarely 12-15-) flowered; its bracts mostly appressed, with 

 scarious-membranaceous and usually colored tips and sometimes margins : clis 

 deeply 5-cleft anthers partly or wholly exserted : leaves alternate, not impressed-punc- 

 tate except in Hymenopappus : receptacle small and flat: heads except in two 

 homogamous : flowers seldom yellow, but sometimes so. 



1-4-7 HYMENOTHRIX Involucre turbinate-campanulate, or in age more open, about 

 "so-flowered, shorter than the disk; its principal bracts 7 to 10, obovate or lanceolate-ob 



