170 
Sect. Portulacella. 
Rami et folia opposita. Bracteoke solitariae. Petala 4 rosea. 
Stamina 9-12. Stylus bifidus reclinatus. Capsula mono- v. dis- 
perma. Semina kevia. 
Portulaca digyna. 
Annua, procumbens, dichotome ramosa , foliis oppositis breviter 
petiolatis ovatis apiculatis, floribus parvis tetrapetalis cymosis 
pleiandris digynis , bracteolis solitariis, petalis roseis integerrimis, 
capsula mono - v. disperma inferne circumscissa, operculo tenui- 
conico scabriusculo medium versus tumescente, seminibus atris 
lucidis kevissimis. 
In tractu steriliore secus rivos Hooker’s Creek et Sturt’s Creek. 
Herba pulchella carnosa. Radix pallida fibrilligera. Caules 
plures prostrati v. adseendentes rufescentes teretes tuberculis 
minutis saturate rubris asperati, ad nodos breviter papilloso-barbati. 
Genicula caulis infima saspius radicantia. Folia seepissime rufe- 
scentia, interdum subrotunda, mox deflexa, supra convexa, subtus 
plana, margine leniter reflexa, 2-5 lineas longa. Cymas terminales 
foliate. Pedicelli breves, basi bracteola cordato-deltoidea minuta 
rosea sustensi, sensim in tubum calycis inerassati. Sepala duo 
ovata, basi membranea, dilute rosea v. decoloria, duobus petalorum 
opposita, quibus triente breviora. Petala late ovata, basi paulo 
angustata, apice obtusa, 2-3" / longa, post florescentiam cum sepalis 
calyptratim coheerentia, sed jam ante capsule maturitatem seceden- 
tia. Stamina utplurimum decern. Filamenta rosea filiformia basi 
barbata partim conspicue partim paulo petalis breviora. Anthers 
saturate rubra3 didymse basifixae. Pollen pallidum. Stylus stamina 
superans roseus mox reclinatus, cruribus recurvatis supra barbellato- 
stigmatosis, pallescentibus. Operculum primo fere hemispluericum 
mox tenui-conicum acuminatum papillosum rubrum astate 2!" longum 
tarde secedens, fructui etiam maturo adhserens. Semen unicum 
sublenticulare apiculatum lucenti-nigrum, e basi capsulae funiculo 
filiformi emersum, operculo succulento inclusum ; aut rarius semina 
duo e basi capsulae seorsis funiculis orta, alterum capsula) cupula 
brevi semi-retentum, alterum superpositum operculo inclusum. 
Sect. Dichocalyx. 
Folia opposita. Bracteolae quaternas, foliace^. Petala 4 rosea 
decidua. Stamina 6. Stylus bifidus. Capsula oligosperma. 
Portulaca oligosperma . 
Annua, erecta v. diffusa, pumila, glabra, foliis oppositis brevis- 
sime petiolatis semiteretiusculis, axillis pasne imberbibus, pedicellis 
axillaribus et terminalibus solitariis, bracteolis quaternis foliaceis 
acuminatis pedicello brevi subsequilongis in cujus apice sitis, 
