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CISTINE.E. Juss. 



HELIANTHEMUM. Tournef. 



Calyx 5-phyllus , foliolis 2 extcrioribus minoribus. Corolla 5-petala. 

 Stamitsa 7-20, aut indefinita, filamewtis capillaribus , antheris didy- 

 mis , utrinque emarginatis. Ovarium l-loculare, aut incomplète 3-lo- 

 culare; placentis 3, filiformibus , 2-12-rariùs pluri-ovulatis ; funiculis 

 resupinatis, aut ascendentibus, post anthesin tumescentibus. Stylus 

 ascendens , aut rariùs erectus. Stigma disciforme , disco processubus 

 fimbriolatis cristato. Capsula 1-locularis, aut incomplète 3-locularis , 

 3- valvis, chartacea, oligosperma aut polysperma ; endocarpio à meso- 

 carpio soluto, pelliculari. Embryo simpliciter spiralis, subcentralis. 

 Cotyledones recti , perispermio subangustiores. 



Herb/\e annuae , aut suffrutices, ramosissimi, decumbentes. Folia 

 opposita (superiora aliquandô sparsa) , penninervia , semper stipulata. 

 Flores corymbosi, terminales, ant oppositifolii , secundi, quandoque 

 distychi, bracteolati, aut rariùs foliis veris suffulti ; pedicellis post an- 

 thesin reflexis , ad basin semicirculatim reversis, deflexis, rariùs ascen- 

 dentibus, axillaribus, aut folio oppositis. Calycis foliolaexteriora, 1-ner- 

 via, herbacea , saepiùs parva, bracteiformia , post anthesin patula; 

 interiora 3-5-costata , in ter costas chartacea, aut scariosa. Petala lutea, 

 alba, aut rosea, guttâ flavâ basi notata. Stamina 1-aut pluri-serialia , 

 flava , stylo breviora. Ovarium saepiùs in thecaphoram brevem, disco 

 arctissimè circumductam , angustatum. Ovula erecta; funiculis oppo- 

 sitis , (rariùs nidulantibus,) confertissimis , post anthesin turbinatis 

 aut claviformibus , 3-hedris, diaphanis, argutè reticulatis; endocarpio 



