470 Mr. J. Miers on the genera Hyoscyamus and Physochlsena. 



ininal raceme or ])anicle; 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~ 

 sochlcena, a name more strictly in conformity with the usual 

 orthoepy than that of Don, being derived from (^vaa, vesica^ 

 ')(Xai,v6(o, vestiOj because of its capsule inclosed in a vesicular 

 calyx. I here annex its generic outline : — 



PhysochLtENA. Physoclaina, G. Don. Belenia, Decne. — Calya; 

 cylindricus, ssepe medio subinflatus, 10-nervis, 5-dcntatus, 

 ])crsistens et augescens. Corolla campanulato-infundibuli- 

 formis, superne ventricosa, imo constricta et cylindrica, limbo 

 vix obliquo, subsequaliter 5-fido, lobis subacutis, baud paten- 

 tibus, sestivatione imbricata. Stamina 5, subsequalia, decli- 

 nata, ssepius exserta, in constrictionem corolla? inserta, Jila- 

 menta ortu pilosa, superne glabra, colorata ; antherce ovata:', 

 imo dorsi ad connectivum articulatim affixa?, 2-loculares, locu- 

 lis adnatis, margine longitudinaliter dehiscentibus. Ovarium 

 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. Stigma 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, testa reticulato-favosa, kilo laterali. Em- 

 hryo teres, intra albumen subcarnosum hcmicyclicus, radicula 

 incurvata, ad angulum basalem spectante, cotyledonibus semi- 

 teretibus sequilongis. — Herbse Gerontogece Orientates, radicc 

 perennante, caulibus plurimis ; folia elliptica, alteima, integra, 

 petiolata ; flores terminates, corymbosi, pedicellati ; corolla pur- 

 pur ascens, rarius sublutescens. 



1. Physochlcena physaloides. Physoclaina physaloides, G. Don, 

 Diet. iv. 470. Hyoscyamus physaloides, Linn. Amwn. Acad. 

 vii. tab. 6. fig. 1 ; Sims, Bot. Mag. tab. 852 ; Sweet, Br. Fl. 

 Gard. i. tab. 13 ; — radice tuberoso, caulibus j)lurimis erectis, 

 simplicibus ; foliis subcordato-ovatis, acutis, mio in petiolum 

 canaliculatum sequilongum attenuatis, utrinque glaberrimis, 

 margine ciliatis ; panicula terminali, pedicellis calycibusquc 

 dense lanato-pilosis ; corolla onmino glabra, purpurascentc, 

 laciniis obtusis, albescentibus, genitalibus faucem vix exccdcn- 



