363 



licare?. Calyx tetrasepalus j sepala ovalo- lanceolala, acuta, inleger- 

 rima, glabra, cxtus virenlia, tcnuissime nervoso - striata , intus albida, 

 palenlia; petctla l6 — 20, ovalo -lanceolata, tasi attenuuta, apice longe 

 et argutc acuminata, integerrima, utrinque glabra, tenera, tenuiter 

 nervoso -striata , alba, patentia, 15 — 18'" longa, sepala aequantia 

 vel fere superantia. Stainüia indcfinita, numerosa, pluriseriata ; yi/a- 

 menla omnia pctalis breviora, exteriora basi dilatata deltoidca vel 

 ovata , petaloidea, interiora sensim angustiora, omnia apicem versus 

 longe attenuata, acuminata atquc supra antlieram in appendicem li- 

 neam circiter longam producta, flavescentia: rt/i//je/'«e locula linearia, 

 basia versus divergentia, per totam longitudinem connectivo adnata, 

 antice bivalvia, sulphurea. öußrjwnj semiglobosum , stigmate 12 — 15- 

 radiato. 



Crescit in lacu mexicano , ibidem detecta a dar. de Har- 

 winsRi. — Floret August o. aj.. (u. ä.)- 



B. filamenta non appendiculata. 



30. N- j4mxtzonum Mart. et Zuccar. 



Rhizomate brevissimo subcyllndrico erecto, foliis orbicularibus 

 peltatis integerrimis cordatis lobis rotundatis , petiolis infra folium 

 annulo villoso instructis, calyce 4-sepalo petalis paruni longiore, an- 

 theris non appendiculatis, stigmate mulliradiato. 



Rhizoma subcylindricum, erectum, vix poliicem longura atque 

 crassitie digiti medii , radiculas plurimas fasciculatas albas succosas 

 subsimplices vel hinc inde fibrillis minutis obsitas, crassitie varias 

 emitlcns. Folia in orbem disposita, natantia, petiolata, orbicu- 

 laria, peltata, integerrima, cordata angulo acuto lobis rotundatis, 

 euperne ad lenlem tenuissime papulosa, ceterum glabra et laete vi- 

 ridia , subtus purpureo- violacea , venis a peliolo radiatim oriundis 

 18 — 20 marginem versus reticulatim inter sc junctis indcque macu- 



4Ö- 



