170 
Sect. Portulacella. 
Rami et folia opposita. Bracteole solitarie. Petala 4 rosea. 
Stamina 9-12. Stylus bifidus reclinatus. Capsula mono- v. dis- 
perma. Semina levia. 
Portulaca digyna. 
Annua, procumbens, dichotome ramosa, foliis oppositis breviter 
petiolatis ovatis apiculatis, fforibus parvis tetrapetalis cymosis 
pleiandris digynis, bracteolis solitariis, petalis roseis integerrimis, 
capsula mono- v. disperma inferne circumscissa, opereulo tenui- 
conico scabriusculo medium versus tumescente, seminibus atris 
lucidis lzvissimis. 
In tractu steriliore secus rivos Hooker's Creek et Sturt's Creek. 
Herba pulchella carnosa. Radix pallida fibrilligera. — Caules 
plures prostrati v. adscendentes rufescentes teretes tuberculis 
minutis saturate rubris asperati, ad nodos breviter papilloso-barbati. 
Genieula caulis infima sepius radieantia. Folia sepissime rufe- 
scentia, interdum subrotunda, mox deflexa, supra convexa, subtus 
plana, margine leniter reflexa, 2-5 lineas longa.  Cymze terminales 
foliatz. Pedicelli breves, basi bracteola cordato-deltoidea minuta 
rosea sustensi, sensim in tubum calycis incrassati. 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 
ealyptratim eohzrentia, sed jam ante eapsulz» maturitatem seceden- 
tia. Stamina utplurimum decem. Filamenta rosea filiformia basi 
barbata partim conspicue partim paulo petalis breviora. Anthere 
saturate rubrz didymze basifixe. Pollen pallidum. Stylus stamina 
superans roseus mox reclinatus, cruribus recurvatis supra barbellato- 
stigmatosis, pallescentibus. Opereulum primo fere hemisphzericum 
mox tenui-conicum acuminatum papillosum rubrum state 2" longum 
tarde secedens, fructui etiam maturo adhzrens. Semen unicum 
sublenticulare apiculatum lucenti-nigrum, e basi capsule funiculo 
filiformi emersum, operculo succulento inclusum ; aut rarius semina 
duo e basi capsule seorsis funieulis orta, alterum capsule cupula 
brevi semi-retentum, alterum superpositum operculo inclusum. 
Sect. Dichocalyx. 
Folia opposita. Bracteole quaterns, foliaces. — Petala 4 rosea 
decidua. Stamina 6. Stylus bifidus. Capsula oligosperma. 
& Portulaca oligosperma. gue 
: Annua, erecta v. diffusa, pumila, glabra, foliis oppositis brevis- 
sime petiolatis semiteretiusculis, axillis pene imberbibus, pedicellis 
axillaribus et terminalibus solitariis, bracteolis quaternis foliaceis 
acuminatis pedicello brevi subsquilongis in cujus apice sitis, 
