composite. 77 



1 64. CHRYSACTINIA. Ray-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. Akenes short-linear, not atten- 

 uate upward. Flowers all yellow. 



+- ■*- Pappus of distinct bristles and distinct paleae : bracts of the many-flowered involucre 

 distinct. 



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

 naked at base. Receptacle quite 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 

 Porophyllurn ; inner of 5 lanceolate long hyaline palere, with costa excurrent into a scabrous 

 awn. 



-* — -s — -* — Pappus either wholly paleaceous, or some or all of the pales 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. c. all or most of the 10 or more 

 palese resolved, except a basal portion, into several (9 or more) or indefinitely numerous 

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

 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. HYMEN ATHERTJM. Pappus of several or numerous paleas, 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. 



168. TAGETES. Palea? 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. 



# # Pectideje. Style of hermaphrodite flowers slender, hispidulous, terminated by two 

 very short obtuse and inappendiculate stigmatic branches. 



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

 so, cylindrical or campanulate, 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 paleas, or reduced to paleaceous-coroniform, 

 rarely obsolete. Opposite-leaved herbs. 



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

 maphrodite, or more commonly 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 foliaceous, 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 squamellee. — Strong-scented or bitter-aromatic herbs or 

 undershrubs, the greater part of the Old World ; with 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 Helenioidece, except for 

 the paleae 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 

 Bymenopappus. 



