composittE. 77 



1 64. CHRYSACTINI A. Ray-flowers conspicuous, with linear lignlcs. 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. Flowers all yellow. 



-i^ -i— Pappus of distinct bristles and distinct palcK : bracts of the many-flowered involucre 

 distinct. 



165. NICOLLETIA. Involucre oblong or cylindraceous, of 8 to 12 tliinnish bi-acts, nearly 

 naked at base. Receptacle (juite naked. Disk-corollas narrow-tubular, 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 

 Porophijllum ; inner of 5 lanceolate long hyaline paleaj, with costa excurrent into a scabrous 

 awn. 



H^ H— H— Pappus either wholly paleaceous, or some or all of the paleai 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 raultisotose-polyadelphous, i. e. all or most of the 10 or more 

 paleaj resolved, 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 sleuder, 

 sometimes an alirupt apicnlation or short obtuse cone. 



167. HYMENATHERUM. Pappus of several or numerous palea% 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. Palere of the pappus 3 to G, firm, commonly unequal, entire, not setiferous, 

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

 gamophyllous nearly throughout into an oblong or more elongated cup or tulje. Akeues 

 compressed or angulate, hardly striate. Herbs. 



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

 ver}' short obtuse and inappeudiculate stigmatic branches. 



169. PECTIS. Heads radiate, several-many-flowered. Involucre naked at base, or nearly 

 so, cylindrical or campanulate, of few or several equal cariuate bracts in a single series. 

 Receptacle small, naked. Disk-coi-oUas 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 paleiB, or reduced to paleaceous-coroniform, 

 rarely obsolete. Opposite-leaved herbs. 



Tribe VII. ANTHEMIDE^. Heads homogamous with flowers all tubular and ber- 

 maplirodite, or more commonly heterogamous, wath the female flowers ligulate and 

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

 naked or with some chafl'y bracts. Bracts of the involucre imbricated, -wholly or 

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

 without tails at base. Style-branches of the Iiermaphrodite 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 squamelLx. — Strong-scented or bitter-aromatic herbs or 

 undershrubs, the greater part of the Old World ; witli alternate leaves : distinguished 

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

 by the truncate style-tips, &c. The first genus would go with Ilelenioiderc, 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. 

 ••^- Anomalous, with involucre (of comparatively few and broad thin bracts) and aspect of 



Hymenopappus. 



