164 LXXXVIII. COMPOSITAE. 
in appendices stipuliformes dilatatis, integerrima dentata lobata v. varie dissecta, nec 
articulatim composita. Florum capitula ssepius terminalia, solitaria v. in cymas corymbos 
paniculas rarius spieas racemosve centrifuge evolutos disposita, rarius ad axillas (ramis 
floriferis abortientibus) sessilia; nonnunquam. capitula ipsa in receptaculo generali ses- 
silia, in glomerulum densum capituliformem inyolucro generali cinctum y. nudum. aggre- 
gata. Capituli receptaculum (peduneuli dilatati vertex) planum convexum conicum. v. 
elongatum rarius concavum, nunc floribus delapsis areolatum papulosum v. pedicellis 
brevissimis persistentibus muricatum, nunc floribus leviter immersis |foveolatum, 
foveolorum, marginibus circa ovaria varie productis fimbrilliferum setosum v. alveolatum, 
nune bracteis paleaceis hyalinis setiformibus v. rarissime herbaceis flores ' singulos sub- 
tendentibus interdumque amplectentibus v. involventibus onustum. ' Bractece exteriores 
vacus, involucrum constituentes, nunc l-seriats liberz v. alte connate in cupulam v. 
tubum apice lobatum, lobis tamen semper sstivatione margine saltem imbricatis; nunc 
s:epius 2—co-seriatim imbricatz, herbacese coriaceze siccze v. hyalino-scariosz, intimse nunc 
in paleas receptaculi abeuntes, nunc appendicibus scariosis coloratis erectis v. radiantibus 
terminate, nunc exterioribus conformes v. magis scarioss, exteriores sepius gradatim 
minores et interdum in squamas parvas secus pedunculum dissitas abeuntes; extimz 
denique in generibus nonnullis magis foliaceze amplioresque v. foliis caulinis plus minus 
conformes, v. omnes pluresve interdum appendice herbaceo scarioso v. spinéscerite ter- 
minate. Flores in capitulo centripetim evoluti, in capitulis heterogamis androgynis 
flores 9 semper in ambitu 1-oc-seriatim dispositi, t in disco centrales. Capitula 
radiata dicuntur si heterogama, corollis florum exteriorum (9. v. neutrorum) ligulatis, 
radiatiformia si heterogama v. homogama. corollis florum exteriorum (neutrorum v. 
rarius 9) iis disci majoribus regularibus v. varie irregularibus nec ligulatis, díscoidea si 
homogama corollis omnibus regularibus v. subregularibus sequalibusque, disciformia, si 
heterogama floribus exterioribus 9 corollis discum haud superantibus szepius tenuioribus 
nec in ligulam productis, ligulata si homogama eorollis omnibus ligulatis. Corolle in 
capitulis discoideis disciformibusque ssepissime homochrom:se, in aliis generibus tribu- 
busve purpürascentes rosez v. albze, in aliis flavze v. rarius coccinese albz v. purpures; 
in capitulis radiatis radiatiformibusve nune homochrom:se, flav;e albidge v. rarissime pur- 
purese v. ezerulez,, nunc heterochrom:e disci flavze v. rarius purpureze, radii czeruleze rosece 
purpures v. albe, in capitulis ligulatis flavze czerulece v. rarius purpurese 'v. coccinese. 
Filamenta variant brevius v. altius corollee tubo adnata, parte libera distincta v. in 
tubum connata, glabra papulosa v. pilosa, in generibus nonnullis (e.g. in Senecione) infra 
apicem quasi articulata supra articulationem varie incrassato-dilatata., Antherze corollc 
tubo sspius semiexserts, nunc omnino exsertz, v. rarius in medio tubo inclus. Stylus 
florum 9 in toto fere ordine uniformis, ei florum D Cichoriacearum similis, apice exsertus, 
ramis filiformibus v. linearibus, rarius latioribus rarissime ovatis obtusis v. acutiusculis, 
intus papilloso-stigmatosis extus nudis; in floribus v. submasculis tribuum czeterarum 
styli apex, apice v. extus apicem versus papillosus v. hispidulus, ex antherw tubo per 
anthesin exseritur, pollinis granulas everrens uti Cassini olim demonstravit nuperque 
Hildebrand (*Nov. Act. Acad. Nat. Cur. xxxv.) optime illustravit, et form: variwe 
partis papillossee characteres tribuales v. genericos magni momenti przbent. : Achsenia 
matura inyolucro sepius breviora rarius exserta, nunc bracteis erectis v. apice clausis 
circumdata v. diu inclusa, nunc bracteis demum reflexis denudata; pappus tamen, 
setosus plumosusve persistensque ssepissime exserítur, et maturitate aóre sicco stellatim 
patet, humectato contrahitur. Callus basilaris achzeniorum mune valde conspicuus, nunc 
tenuis v. brevissimus v. omnino deficiens, rectus v. obliquus, S?pe de specie in speciem 
variat, rarius quatenus observavimus characteres genericos prebere videtur. Discus 
epigynus nune (e.g. in pluribus Helianthoideis et hinc inde in Eupatoriaceis, Asteroideis, 
Inwloideis, &c.) prominulus annuliformis, nune (in Éupatoriaceis, Asteroideis, Ta 
loideis, ete. plurimis) vix à basi styli distinctus v. styli basis bulbiformis cartilagineus 
absque disco conspicuo.. In aliis generibus stylus basi nec inerassatus nec disco 
cinctus, purp Or 
j 
