Helianthoidec.] J LXXXVIII. COMPOSIT4E, 9365 
angustis herbaceis parum inszqualibus. Receptaculum convexum v. conicum, paleis ' 
carinatis complicatisve flores amplectentibus demum auctis achrzenia includentibus villoso- 
lanatis glabratisve persistentibus onustum.  Corollz radii ligulatz, patentes, apice 2-fidze 
y. 2-dentats ; ij regulares, tubo brevi basi dilatato v. sequali, limbo campanulato ó-fido. 
Anthers basi integrs obtuse. Styli fl. i rami superne incrassato-dilatati, brevissime v. 
longiuseule acutati. Achsenia radii obcompresso-triquetra, vacua ; disci crasso-compressa, 
obovata, obtusa, calva.—Frutices nunc arborescentes rarius suffrutices, pubescentes v. 
tomentoso-villosi, rarius glabri. Folia opposita, integra dentata v. late lobata, inferiora 
interdum ample pinnatifida. Capitula mediocria v. parvula, corymboso-paniculata. 
. Receptaculi pales nunc pilosissim:e v. lanatze, mucrone post anthesin inflexo terminato, 
nune pilosiuscule, vix mucronate, demum glabrescentes.  Corolle alb» v. interdum 
roses, ligulis ssepius ratione capituli ampl», paucz. ^ Achsnia glabra, disco hypogyno 
ssepe prominulo pappum cyathiformem simulante. 
Species ad 14, Amerieze calidioris a Mexico usque ad Columbiam incole. .JWalp. Rep. ii. 612; 
Ann. v. 221 (Montagnea). Sweet, Brit. Fl. Gard. ser. 2, t. 4& (Eriocoma).  Brongn. Rev. Hortic. 
1857, ig. 165. 
Unpza, Kunth. Ind. Sem. Hort. Berol. 1847 ; Walp. Ann. i.412, est M. grandiflora, DC. (M. 
heracleifolia Brongn. ex Ascherson in litt.), species M. Aibiscifoliz, Benth. in CErst. Comp. Centr. 
Amer. 25, affinis, et cum illa insignis receptaculi paleis demum valde auctis membranaceis venoso- 
reticulatis glabrescentibus. Genus habitu distinetum, a Gynolomia differt paleis receptaeuli demum 
auctis ach:enia includentibus etsi minus arcte clausis quam in Sclerocarpo. i 
978. Xsocarpha, R. Br. in T'rans. Linn. Soc. xii. 110.  (Dunantia, DC. Prod. v. 626.) 
Capitula homogama, multiflora, floribus omnibus D fertilibus. Involucrum breve, bracteis 
2-9-seriatis parum inzequalibus v. exterioribus brevioribus swpius tamen paucis angus- 
tisque. Receptaculum oblongum v. conicum, paleis complicatis flores amplectentibus 
onustum.. Corolle regulares, tubuloss, limbo parum ampliato v. anguste campanulato, 
apice breviter 5-lobo. Antherze basiintegre, truncatz, — Styli rami tenues, appendicibus 
longis subulatis hirtis terminati. Achznia 4-5-angulata, apice truncata, calva, callo 
basilari obliquo.—Herbze divaricato-ramosc, ssepius molliter pubescentes, Folia omnia 
opposita v. pleraque alterna, integra v. dentata. Capitula parvula, fructifera ovoideo- 
conica, longe pedunculata v. subcorymbosa. Flores minimi, albi —Acheenia glabra. 
Species 5, Americze centralis Indis occidentalis Columbis et Peruvis incole. DC. Prod. v. 106; 
vii. 291 (Dunantia). . Walp. Rep.vi.106, 703. Deless, Ic. Sel. iv. t. 87 (Dunantia). : Benth. Bot. 
Sulph. t. 41. Genus ab affinibus capitulis fructiferis more Spilanthis elongatis facile distinguitur, 
379. Rudbeckia, Linn. Gen. m. 980.— Capitula heterogama, radiata, floribus radii 
 meutris, disci bj fertilibus v. rarissime radio deficiente homogama.  Involucrum hemi- 
sphzericum, bracteis 2- rarius 3-4-seriatis apice v. exterioribus a basi herbaceis. Recepta- 
culum valde elevatum, conicum v. columnare, paleis complicatis concavis v. rarius subplanis 
flores disei amplectentibus v. subtendentibus. Coroll: radii ligulatze, patentes, ssepius . 
elongatz, apiee integre v. breviter 2-93-dentats ; ió regulares, tubo nunc brevissimo 
. limbo elongato cylindraceo parum angustiore, nune tenui in limbum breviorem ampliato, 
limbo apice breviter v. longius b-fido. Anthersz basi truncate, integrz v. minute 
9.mucronats. Styli fl. rami appendicibus nune longis hirtis nune brevioribus 
subulatis minus hirtis terminati. Achsenia radii vacua, disci crasso-compressa v. sub- 
sequaliter 4-gona v. subteretia, sepe curvula basique attenuata, apice obtusissima v. 
truncata, calva v. pappo breviter coroniformi insqualiter denticulata eoronata.— Herbs 
perennes, sepius rigidze rudesve, parum ramos, scabrze Y. hispidze. Folia alterna v. 
rarius opposita, integerrima dentata incisa v. semel bisve pinnatisecta. Capitula magna 
v. mediocria, solitaria v. pauca, longe peduneulata. Corollze nune ommes v. radii v. 
disci solee purpurascentes violacesze v. pallidze, nune radii rarius disci flavse. — Ach:enia 
glabra. 
- Species ad 25, Ameriece borealis incolz, plerzeque in civitatibus orientalibus centralibusve, paucee 
in Mexico v, California crescentes. DC. Prod. v. 555. Torr. et Gr. Fl. N. Amer. ii, 807. Walp. 
