COMPOSIT.'E. 77 



164. CHRYSAOTINIA. Eay-flowers conspicuous, with linear ligules. Disk-flowers nu- 

 merous ; their corolla narrow and 5-toothed, and style-branches tipped with short obtuse or 

 conical appendages. Involucre of 10 or more short bracts. Akeues short-linear, not atten- 

 uate upward, i lowers all yellow. 



.)_ .^^ Pappus of distinct bristles and distinct palea3 : bracts of the many-flowered involucre 

 distinct. 



165. NICOLLETIA. Involucre oblong or cylindraceous, of 8 to 12 thinnish bracts, nearly 

 naked at base. Receptacle cpiite naked. Disk-corollas uarrow-tulinlar, 5-toothed. Style- 

 branches tipped with long filiform-subulate appendages. Akenes filiform-linear, with taper- 

 ing base. Pappus double ; outer of indefinitely numerous capillary bristles like those of 

 Porophyllum ; inner of 5 lanceolate long hyaline paleas, with costa excurrent into a scabrous 

 awn. 



-H- H— -i— Pappus either wholly paleaceous, or some or all of the palea?. bearing or largely 

 resolved into awns or capillary bristles : bracts of the involucre gamophyllous or some- 

 times distinct : receptacle variously fimbrillate, alveolate-dentate, or more strictly naked. 



166. DYSODIA. Pappus multisetose-polyadelphous, i. e. all or most of the 10 or more 

 paleffi resulvcd, except a basal portion, into several (9 or more) or indefinitely numerous 

 capillary but rather stiff bristles. Involucre hemispherical or campanulate, usually calycu- 

 late with a series of loose accessory bracts, the proper bracts generally gamophyllous at base, 

 rarely quite separate, rarely united to near the summit. Style-appendages sometimes slender, 

 sometimes an abrupt apiculation or short obtuse cone. 



167. HYMENATHERUM. Pappus of several or numerous paleai, either 1-5 aristate or 

 pointed, or partly resolved into as many bristles, or some or all of them entire and even 

 truncate (rarely even concreted). Involucre campanulate, cupulately gamophyllous high up, 

 with or without some loose accessory bracts. Style-branches truncate or very obtuse, some- 

 times tipped with a minute apiculation. Akenes mostly terete, and striate. 



1 68. TAGETES. Palew of the pappus 3 to 6, firm, commonly unequal, entire, not setiferous, 

 but one or more of them frequently subulate-pointed or aristiform. Involucre naked at base, 

 gamophyllous nearly throughout into an oblong or more elongated cup or tube. Akenes 

 compressed or angulate, hardly striate. Herbs. 



* * Pectide.e. Style of hermaphrodite flowers slender, hispidulous, terminated by two 

 very short obtuse and inappeudiculate stigmatic branches. 



169. PECTIS. Heads radiate, several-many-flowered. Involucre naked at l^ase, or nearly 

 so, cylindrical or campanula,te, of few or .several equal carinate bracts in a single series. 

 Receptacle small, naked. Disk-corollas 5-lobed, one or two sinuses often deeper, thus becom- 

 ing bilabiate. Akenes linear, terete or angled. Pappus of few or numerous bristles or awns, 

 sometimes paleaceous-dilated <at base, or of paleaj, or reduced to paleaccous-corouiform, 

 rarely obsolete. Opposite-leaved herl)s. 



Tribe VII. ANTHEMIDEzE. Heads homogamous with flowers all tubular and her- 

 maphrodite, or more common!}'' heterogamous, with the female flowers ligulate and 

 radiate, or sometimes with corolla reduced to a tube or obsolete. Receptacle either 

 naked or with some chaffy bracts. Bracts of the involucre imbricated, wholly or 

 partly dry and scarious or scale-like, not foliaceoiis, seldom herbaceous. Anthers 

 without tails at base. Style-branches of the hermaphrodite flowers truncate, and some- 

 times with obscure conical tips. Akenes usually small and short, with no pappus or a 

 paleaceous crown, or a circle of squamellaj. — Strong-scented or bitter-aromatic herbs or 

 undershrubs, the greater part of the Ohl World ; with alternate leaA^es : distinguished 

 from the preceding tribe by the scarious imbricated involucre ; from the Asteroidece, 

 by the truncate style-tips, «fec. The fir.st genus would go with Helen ioidere, except for 

 the palese of the receptacle. 



* Receptacle paleaceous, i. e. with chaffy bracts subtending some or all the disk-flowers : 

 heads radiate, or the rays wanting in certain species. 



•1— Anomalous, with involucre (of comparatively few and broad thin bracts) and aspect of 

 JSymenojmppus. 



