COMPOSITE 323 



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

 pistillate of usually more numerous and fine bristles. 



Trib. Hi, Inuloideas Cass. An. Sci. Nat. 1829, 20. Heads 

 heterogamous, radiate or discoid with fertile flowers filiform or 

 ligulate; or sometimes homogamous and tubuliflorovs. 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- 

 phrodite flow ers filiform or flattish not appendaged: the stigmatic 

 lines running to or vanishing near the roundish or truncate tip, 

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

 inate-sterile flowers commonly entire. Pappus usually capillary or 

 none. Involucre commonly dry or scarious, rarely foliaceous. 



subtribe i FiLAGiXEiE. 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. 



25 Mieropus Fertile flowers few and in a single series on the short recep- 

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

 receptacle which strictly encloses the achene. 



* * Achenes straight or slightly oblique : corolla and style terminal. 



+■ Chaff loosely enclosing the aehene : central flowers sterile 



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



cylindrical or columnar receptacle, their .chaff thin, saccate or boat- 

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



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

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

 lated chaff: pappus none. 



+- -*- Chaff more open, hardly enclosing the achenes : fertile flowers 

 in more than one series ; central flowers sometimes fertile. 



28 Hesperevax Receptacle villous, its centre elongated into a narrow 

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

 chaff : pappus none. 



subtribe ii gnaphalie.e. Bracts of the involucre all thin and 

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

 woolly herbs. 



29 Autennaria Heads completely dioecious, the staminate with undivi- 

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

 apex: 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, those of the sterile flowers little thickened upward. 



31 Gnaphalinm Heads all heterogamous : pistillate flowers very numer- 



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

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



subtribe in EUINULEJ3 Outer bracts of the involucre herba- 



