COMPOSITE 323 



and often tortuose and more or leas clavellate bristles: of the 

 pistillate of usually more numerous and fine bristles. 



Trib. in, Inuloidese Cass. An. Sci. Nat. 1829, 20. Heads 

 heterogamous, radiate or discoid with fertile flowers filiform or 

 ligulate; or sometimes homogamous and tubuliflorous. Anthers 

 sagittate, and the base of the lobes produced into more or less of a 

 tail (caudate) or other appendage. Style-branches of the herma- 

 phvodite flowers filiform or flattish not appendaged: the stigmetic 

 lines running to or vrnishing n^ar the roundish or truncate tip, 

 which is at most . papillose or somewhat penicillatc. Style of stam- 

 inate-sterile flowers commonly entire. Pappus usually capillary or 

 none. Involucre commonly dry or scarious, rarely foliaceous. 



SUBTBIBE I FiLAGiNEJs. Bracts of the involucre mostly thin 

 and scarious. Receptacle with scales of various texture, enclos- 

 ing or subtending the fertile flowers or achenes : pistillate flowers 

 with filiform truncate or 2-3-toothed corollas. 



* Achenes gibbous and compressed : corolla and style lateral ; pap- 

 pus none. 



25t Micropas Eertile flowers few and in a single series on the short recep- 

 tacle, included in the laterally compressed very gibbous scale oJ the 

 receptacle which strictly encloses the achene. 



* * Achenes straight or slightly dblique : corolla and style terminal, 

 ■w Chaff loosely enclosing the achene : central flowers sterile. 



26 Stylocline Fertile flowers 5-10 or more, in two or more series on a 

 cylindrical or colu mnar receptacle, their chaff thin, saccate or boat- 

 shaped : pappus of few caducious bristles to the sterile flowers or none. 



27 Fsilocarphns Fertile flowers numerous, in several series, on a globu- 

 lar receptacle, each in an bbovate turgid membranaceous and reticu- 

 lated chaff: pappus none. 



-I- <- Chaff more open, hardly enclosing the achenes: fertile flowers 



in more than one series ; central flowers sometimes fertile. 



28 Hespererax Receptacle villous, its center elongated into a narrow 

 column : achenes pear-shaped, flattened parallel to the subtending 

 chaff: pappus none. 



suBTRiBE II GNAPHALiEiE, Bracts of the involucre all thin and 

 scarious, often pearly, persistent. Receptacle naked. Floccose- 

 woolly herbs. 



29 Antennaria Heads completely dioecious, the staminate with undivi- 

 ded style, and bristles of the pappus thickened or barbellate at the 

 apes : pappus of the pistillate flowers slender and united at the base. 



30 Anaphalis Heads incompletely dioecious: staminate heads with a 

 few hermaphrodite but sterile flowers in the centre : bristles of the 

 pappus all separate, tliose of the sterile flowers little thickened upward. 



31 Gnaphalinin Heads all heterogamous : pistillate flowers very numer- 

 ous, in more than one seiies; hermaphrodite fertile ones fewer, in the 

 centre : bristles of the pappus slender, not thickened upward. 



SUBTRIBE III EUiNULE^ Outer bracts of the involucre herba- 



