382 LXXXVHI. COMPOSIT/E. [ Helianthoidec, 
419. Rymenostephium, JBeníh. gen. nov.— Capitula heterogama, radiata, floribus 
radii l-seriatis neutris, disci  fertilibus. Involucrum breve, campanulatum, bracteis 
pauciseriatis angustis striatis, exterioribus gradatim brevioribus. Receptaeulum planum 
v. convexiuseulum, paleis concavis complicatisve flores & subtendentibus v. amplectenti- 
bus onustum. — Corolle radii ligulatz, lamina patente integra v. 2-dentata ; 5 regulares, 
tubulosz, limbo parum ampliato cylindraceo apice breviter D-fido, | Antherse basi integrse 
v. auriculis parvis acutiusculis sagittats. Styli fl. O rami superne leviter complanati, 
appendice brevi terminati. Achzenia radii abortiva, disci parvula, nigra, a latere com- 
pressa, marginibus obtusiusculis v. subcallosis. Pappi pales: v. squamelle 2, hyalinse, 
acere, nune minim:e absque squamellis intermediis, nune majores squamellis utrinque 
1-2 pariter hyalinis fimbriatisque at minoribus interpositis, —Herbee suffruticesve glabri 
v. tenuiter canescentes. Folia opposita, petiolata, integra v. serrata. Capitula parvula, 
ad apices ramorum corymboso-paniculata. Corolle flavs. ^ Achsenia sepius pilis parvis 
conspersa. 2 " i 
Species 2, inter se quoad pappum paullo diverse, at facile congeneres, altera Novs Granatee, altera 
Mexiei ineola. Genus Salee affine videtur sed pluribus notis distinetum. Pappi pales v. squa- 
melle iis generum. Galinsogearum nonnullarum subsimiles sed inzequales. sS 
414. Cheenocephalus, Griseb. Fl Brit. W. Ind. 374.— Capitula homogama, pauci- 
(6-10-) flora, floribus omnibus D fertilibus. Involucri bractec paucs, valde inzequales, 
interiores 1-2 elongatz, in paleas receptaculi abeuntes. Receptaculum parvum, paleis 
membranaceis complicatis flores involventibus, achzmnia amplectentibus, onustum. | Co- 
roll regulares, tubuloss, limbo elongato cylindraceo apice breviter b-fido. Antherse 
basi auriculis minutis sagittat;e, Styli rami elongati, in appendices acutas desinentes. 
Ach:snia a latere compressa, anguste 2-alata, apice 2-aristata, inter aristas nuda, disco 
epigyno prominente.— Frutex elatus, glaber v. minute pubescens, Folia alterna, ampla, 
dentata. Capitula parva, in panicula corymbosa terminali conferta. Achzenia glabra. 
Species 1, Indim occidentalis incola. Genus hine Salze hine Garcilassg valde affine. Flores 
singuli ut in Garcilassa ob involucrum inconspienum segregati videntur et sepe divergentes. 
Achznia tamen ut in erbesina Salmeaque 2-aristata, nec ut in Garcilassa pappo coroniformi superata; 
415. Garcilassa, Pepp. et Endl. Nov. Gen. et Sp. iii. 45, t. 251. —Capitula homogama, 
discoidea, pauci- (4—5-) flora v. staminibus hine inde abortientibus 9, v, rarius 1-2 
sterilibus; Involuerum. preter paleas receptaculi brevissimum, bracteis paucis parvis. 
Receptaculum parvum, paleis membranaceis (seu involueri bracteis interioribus elongatis) 
flores involventibus onustum. —Corolle omnes regulares, tubo brevi, limbo campanulato 
D-fido. Anthers basi subtruncatz integre. Styli rami indistincte appendiculati, acuti. 
Ach:nia oblonga, a latere compressa, basi contracta interdumque anguste 1-2-alata. 
Pappus brevissimus, annulatus, ciliolato-fimbrillatus.—Herba elata, debilis, scabro- 
pubescens v. hispida. Folia alterna, ampla, membranacea, serrata, 3-nervia. Capitula 
parva, ad apices ramorum inter folia floralia in glomerulos globosos aggregata.  Ach:nia 
breviter pilosula. Flores singuli ob involucri brevitatem segregati videntur. 
Species 1, Peruvim incola. JWalp. Hep. vi. 147. 
416. Guizotia, Cass. Dict. lix. 247. (Ramtilla, DC. in Wight. Contrib. Bot. Ind. 18. 
Veslingia, Vis. in Nuov. Sagg. Acad. Sc. Padova, v. 269.)— Capitula heterogama, radiata, 
floribus radii 9 1-seriatis diseique Q fertilibus.  Involucrum campanulatum, bracteis 
sub-2-seriatis, exterioribus membranaceo-foliaceis interiores paleis receptaeuli similes 
subsuperantibus. Receptaculum convexum. v. conicum, paleis planis membranaceo- 
scariosis .Striatis flores i$ subtendentibus onustum.  Corolle 9 ligulatz, lamina pa- 
tente apice 3-dentata; 0 regulares, limbo campanulato semi-5-fido; tubo omnium 
brevi, basi pilis densis sublanoso, achzenii apicem obtegente. Antherw basi truncate, 
integre v. minutissime 2-dentate. Styli 8. D rami appendicibus subulatis hirtis 
terminati. Achznia a dorso plus minus compressa, sub-4-gona y. radii 3-quetra, 
