422 MR. J. MIERS ON THE HIPPOCRATEACE/E OF SOUTH AMERICA. 
large leaves. The flowers are very small, consisting of five sepals, five petals, a short 
somewhat campanulate tubular disk, three erect stamens inserted within it, around a 
very depressed subtrigonoid ovary concealed by the disk, a short, thick style, terminated 
by six reflected stigmata; the ovary has six distinct cells. There are several peculiarities 
in this structure: one is in the form of the stamens, the filaments being erect, almost 
linear, each bearing extrorsely two small distinct anther-lobes, which are oval, fixed col- 
laterally upon a transversely narrow connective, and separately open bivalvately across 
the middle by a horizontal suture. Another feature is in the ovary being 6-celled, and 
surmounted by a short hollow style, which carries a stigma of three short divaricated 
branches opposite to the stamens, each of which is more or less deeply bifid. In this 
abnormal deviation from the usually alternate position of the stigmata with regard to 
the stamens, Amphizoma agrees with the two genera last described. The leaves, branches 
of the inflorescence, sepals and petals are charged with numerous very conspicuous spiral 
fibres. The generic name is obtained from ani, circumcirca, Copa, cingulum, because the 
ovary and stamens are surrounded by the free disk. 
! AMPHIZOMA, nob. 
Sepala 5, rotundata, imo crassa, marginibus late membranacea, subintegra, imbricata. Petala 5, alterna, 
2-3-plo longiora, obovata, lutea, opaca, margine submembranacea, integra, papillosa, æstivatione 
quincuncialiter imbricata. Discus campaniformi-tubulosus, margine tenui integro, sepalorum longi- 
tudine, albus. Stamina 3, intra discum inserta, eo duplo longiora, erecta; filamenta compresso- 
linearia, imo vix latiora; anthere duplo latiores, profunde didymze, lobis collateralibus ovato-globosis, 
rufo-coriaceis, singulis rima horizontali paulo hiantibus, connectivo angusto horizontali summo fila- 
mentorum extrorsum affixis. Ovarium conice rotundum, valde depressum, disco occultum, 6-loculare ; 
stylus brevissimus; stigmata 3, brevissima, divaricata, profunde fissa, lobis subteretibus aut com- 
pressis, obtusulis, reflexis: cetera ignota. 
Frutices Brasilienses, ramosi: rami tenues, virgati, pendentes: fola opposita, lanceolato- vel elliptico- 
oblonga, integra, reticulata, breviter petiolata: panicule axillares, longiuscule pedunculate, 5-Gies 
pseudo-dichotome divise, ramis elongatis tenuissimis alternis, imo 1-bracteolatis, gradatim brevioribus, 
ultimis 1-floris : flores parvi, tenuissime et longiuscule pedicellati, flavi. 
1. AMPHIZOMA LAXIFLORA, nob.: Anthodon ? laxiflorus, Benth. in Hook. Kew Journ. iv. 
10: ramulis pendentibus, tenuiter virgatis, teretibus, subgriseis, tubereulis parvis 
verruculosis, junioribus angulato-striatis, ad axillis oppositas dilatatis: foliis lan- 
ceolato-oblongis, imo subacutis, a medio utrinque sensim angustioribus, apice in 
acumen longiusculum sublineare obtusulum navieulari-recurvum repente attenuatis, 
margine tenuiter cartilagineo subintegris aut obsolete sinuato-serratis, subflaccidis, 
supra leete viridibus, subnitentibus, nervis tenuibus utrinque 8-10 patentim divari- 
catis mox arcuatim nexis paulo prominulis, cum pluribus aliis brevioribus inter- 
mediis reticulatis, subtus pallidioribus, flavide opacis, granulis minutissimis erystallinis 
punctulatis, nervis paulo prominulis, costa prominente; petiolo tenui, canaliculato, 
rugose corrugato, limbo 35-plo breviore: paniculis axillaribus, geminis, e gemma 
brevi bracteolata ortis, folio 3-plo brevioribus, glabris, longiuscule pedunculatis, alter- 
natim et pseudo-dichotome divisis, ramulis longis, pluribus, tenuissimis, compressis, 
