COMPOSIT-E. 77 



164. CHRTSACTINIA. Ray-flowers conspicnons. with linear liL'ulc-. Disk-flower^ nn- 

 mer 'ii-; their corolla narrow and 5-roothed, and style-l>ranche? tipped with short obtuse or 

 conical aiijiemiage?. Involucre of 10 or more sliurt bracts. Ak'-ues sliurt-liuear, not atten- 

 uate upward, ilowers all yellow. 



-T— -y- Pappus of distinct bristles and distinct paleae : bracts of the many-flowered inrolncre 

 distinct. 



165. NICOLLETIA. Inrolncre oblcDir or cylindraceou.s, of S to 12 thinnish brarts. nearly 

 naked at base. Rerept;nle quite naked. Uisk-con illas narrow-tubular, 5-to<ithed. M . Re- 

 branches tipped with Ijng filiform-subulate appenda^'es. Akenes filiform-linear, with taper- 

 ing 1 use. Pappus double; uuter of indefinitely numerus capillary Iri^tle- like tliose of 

 Pnr"j'!filUum ; inner of 5 lanceolate long hyaline pale®, with c':'sta excurrent into a scabrous 

 awn. 



•i— -i— -^ Pappus either wholly paleaceous, or some or all of the palese bearing' or liiPLrely 

 resolved into awns or capUlary liristlrs: bracts of the involucre L'umophyUons or s ume- 

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



166. DTSODIA. Pappus rimlti-etMse-polyadelphoiis. i. c. all or ni'St of the 10 or more 

 palese res ilved. except a basal portion, into .several (9 or more) or indefinitely muner'jus 

 capillary but rather stiff lirisiles. luvolucre hemispherical or campanulate, usually calycu- 

 late with a series of loose access^jry bracts, the proper bracts I'cnerally samophyllous at ba-e, 

 rarelv quite separate, rarely united to near the summit. >tyi._.-.ip]i..-i.daL'c- sometimes slender, 

 sometimes an abrupt apiculation or sli it ol tr.se cone. 



167. HYMEXATHERUM. Pappus of several or numerous palea-, either 1-5 aristate or 

 pointed, or partly resohed into as many i'ri~tle-, or some or all of them entire and even 

 truncate (rarely even concreted). Involucre campanulate, cupulately gamophyllous hiu'li up, 

 with or without some loose accessory bracts, .'^f. li.-Uranclies truncate or very obtuse, some- 

 times tipped with a minute apiculariijn. Akeues mcstly terete, and striate. 



16S. TAGETES. Palese of the pappus 3 to 6, firm, commonly unequal, entire, not setiterous, 

 but one or more of them frequently subulate-poLuted or ari^tiform. Involucre naked at base, 

 LMraophTllous nearly tlir. ■nsliont into an oblong or more elongated cup or tnlie. Akeces 

 conijiressed or angulate, hardly striate. Herbs. 



# * Pectii)E.e. Style of hermaphrodite flower« slenlT. hispidulous, terminated by two 

 verv sliort obtuse and inappendiculate stiL^matic branches. 



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

 SM. cTlindrical or campanulate, of few or several equal carinate bracts in a single serits. 

 Eeceptarle small, naked. Di-k-c t jllas 5-lobed, one or two sinuses often deeper, thus becom- 

 ins bilabiate. Akenes linear, terete or angled. Pappus of few or nnmerutis bristles or awns. 

 S'lraetimes palea< eotjs-ijilated at base, or of palese, or reduced to paleaceous-i-uroniform, 

 rarely obsolete. Opp'-'sit'-leaved herbs. 



Tribe TIL AXTHERMIDE Ji:. Heads homogamoiis with flowers all tubnlar and her- 

 maphrodite, ur more commonly hetercganijus. -n-ith the female flowers lijulate and 

 radiate, or sometimes with coroUa reduced to a tube or obsMlete. Receptacle either 

 naked or with some chafiy iTacts. Bracts of the involucre imbricated, wholly or 

 partly dry and scarions or scale-lite, not foliaceoiis, seldom herbaceous. Anthers 

 without tails at base, .■^ivle-branches of the hermaphrodite flowers tnintate, and some- 

 times w-ith obscure conical tips. Aken.^s tisually small and short, with no pappus or a 

 paleacecus crown, or a circle of scjuamellae. — SironL.'-scentecl or bitter-aromatic herb= or 

 undershrubs, the oreatei part of the Old World ; with alternate leave? ; distini'uislicd 

 from the prececlin.- tribe by the = ariou? imbricated involucre; from the AskrouJ.iT, 

 by the truncate style-tips. &c. The first genus would .'Cj with HdinifAdi'r. except for 

 the palea of the receptacle. 

 * Receptacle paleaceous, i. e. w-ith chafiy bracts subtending some or all the disk-fi vwers : 



heads radiate, or the rays wantir g in certain srecies. 

 -i— .Anomalous, with involucre (of comparatively few and broad thin bracts and aspect of 

 Hymenopappus. 



