470 Mr. J. Miers on the genera Hyoscyamus and Physochlena. 
minal raceme or panicle; the calyx does not increase to half the 
size, in proportion to that of Hyoscyamus, it is more reticulated, 
of thinner and more membranaceous texture, and the teeth, 
wanting the strong marginal nervures, are thin and blunted, and 
generally inflexed, nearly closing the mouth of the tube; the 
operculum is also much smaller, quite flat and discoid, and less 
bony in its substance. These different features are fully suffi- 
cient to constitute a valid genus, which I propose to call Phy- 
sochlena, a name more strictly in conformity with the usual 
orthoépy than that of Don, bemg derived from ¢ica, vesica, 
xNatvow, vestio, because of its capsule inclosed in a vesicular 
calyx. I here annex its generic outline :— 
PuysocHL#NA. Physoclaina, G. Don. Belenia, Decne.—Calyx 
cylindricus, seepe medio subinflatus, 10-nervis, 5-dentatus, 
persistens ct augescens. Corolla campanulato-infundibuli- 
formis, superne ventricosa, 1mo constricta et cylindrica, limbo 
vix obliquo, subzequaliter 5-fido, lobis subacutis, haud paten- 
tibus, stivatione imbricata. Stamina 5, subzequalia, decli- 
nata, seepius exserta, in constrictionem corolle inserta, fila- 
menta ortu pilosa, superne glabra, colorata; anthere ovate, 
imo dorsi ad connectivum articulatim affixee, 2-loculares, locu- 
lis adnatis, margine longitudinaliter dehiscentibus. Ovariwm 
conicum, disco carnoso annulari basi cinctum, glandula parva 
apicali vix conspicua munitum, 2-loculare, ovulis plurimis, pla- 
centis valde incrassatis, dissepimento utrinque adnatis. Stylus 
incurvus, exsertus. Stagma subbilobo-capitatum. Capsula tur- 
binata, membranacea, calyce reticulato inclusa, 2-locularis, 
apice operculatim dehiscens, operculo parvo discoideo, cori- 
aceo. Semina plurima, placentis crassis affixa, ovata, com- 
pressa, reniformia, festa reticulato-favosa, hilo laterali. Em- 
bryo teres, intra albumen subcarnosum hemicyclicus, radicula 
meurvata, ‘ad angulum basalem spectante, cotyledonibus semi- 
teretibus eequilongis. —Herbz Gerontogee Orientales, radice 
perennante, caulibus plurimis ; folia elliptica, alterna, integra, 
petiolata ; flores terminales, corymbost, pedicellati ; corolla pur- 
purascens, rarius sublutescens. 
1. Physochlena physaloides. Physoclama physaloides, G. Don, 
Dict. iv. 470. Hyoscyamus physaloides, Linn. Amen. Acad. 
vil. tab. 6. fig. 1; Sims, Bot. Mag. tab. 852; Sweet, Br. Fi. 
Gard. i. tab. 18 ;—radice tuberoso, caulibus plurimis erectis, 
simplicibus ; foliis subcordato- ovatis, acutis, 1mo in petiolum 
canaliculatum squilongum attenuatis, utrinque glaberrimis, 
margine ciliatis; panicula terminali, ‘pedicellis calycibusque 
dene lanato- pilosis ; corolla omnino glabra, purpurascente, 
lacinus obtusis, albescentibus, genitalibus faucem vix exceden- 
