– Ryukyu Islands Portulaca oleracea L. – common purslane, pigweed – Macaronesia, Tropical Africa, Mediterranian to Pakistan and Arabian Peninsula Portulaca oligosperma F.Muell. – Australia Portulaca olosirwa S.M.Phillips – Kenya Portulaca papillatostellulata (Danin & H.G.Baker) Danin – Europe to Mediterranian Portulaca papulifera D.Legrand – Argentina Portulaca papulosa Schltdl. – Argentina, Uruguay Portulaca paucistaminata Poelln. – Cuba Portulaca perennis R.E.Fr. – Argentina, Bolivia, Peru Portulaca peteri Poelln. – Ethiopia, Kenya, Tanzania Portulaca philippii I.M.Johnst. – Bolivia, Chile Portulaca pilosa L. – shaggy purslane – Hawaiian Islands, southern U.S.A. to Tropical & Subtropical S.America Portulaca psammotropha Hance – Southern China to Philippines Portulaca pusilla Kunth – Colombia, Venezuela Portulaca pygmaea Steyerm. – Colombia, Venezuela Portulaca quadrifida L. – chickenweed purslane – Tropical & Subtropical Old World to SW. Pacific Portulaca ragonesei D.Legrand – Argentina Portulaca ramosa Peter – Tanzania Portulaca rausii Danin – Mediterranian Portulaca rhodesiana R.A.Dyer & E.A.Bruce – South Africa, Zimbabwe Portulaca rotundifolia R.E.Fr. – Argentina, Bolivia Portulaca rubricaulis Kunth – redstem purslane – SE. Mexico, Florida to Caribbean, Venezuela to Ecuador Portulaca rzedowskiana Ocampo – Mexico Portulaca samhaensis A.G.Mill. – Socotra Portulaca samoensis Poelln. – New Guinea to SW. Pacific Portulaca sanctae-martae Poelln. – Colombia Portulaca sardoa Danin, Bagella & Marrosu – Corsica, Sardinia Portulaca saxifragoides Welw. ex Oliv. – Angola Portulaca sclerocarpa A.Gray – Ihi makole – Hawaiian Islands Portulaca sedifolia N.E.Br. – French Guiana, Guyana, Suriname, Venezuela Portulaca sedoides Welw. ex Oliv. – Angola Portulaca sicula Danin, Domina & Raimondo – Sicilia Portulaca smallii P.Wilson – Small's purslane – Georgia, North Carolina, South Carolina, Virginia Portulaca socotrana Domina & Raimondo – Socotra Portulaca somalica N.E.Br. – Somalia Portulaca stellulatotuberculata Poelln. – Paraguay Portulaca stuhlmannii Poelln. – Tanzania Portulaca suffrutescens Engelm. – shrubby purslane – Arizona, Mexico, New Mexico, Texas Portulaca suffruticosa Wight – India, Sri Lanka Portulaca sundaensis Poelln. – Lesser Sunda Islands Portulaca thellusonii Lindl. – Brazil Portulaca tingoensis J.F.Macbr. – Argentina, Peru Portulaca trianthemoides Bremek. – Limpopo Portulaca trituberculata Danin, Domina & Raimondo – Canary Islands, E. Central Europe to Mediterranian Portulaca tuberculata León – Cuba, Cayman Islands Portulaca tuberosa Roxb. – Indian subcontinent to N. Australia Portulaca umbraticola Kunth – wingpod purslane – Mexico to Tropical America Portulaca werdermannii Poelln. – Brazil Portulaca wightiana Wall. ex Wight & Arn. – South Africa to Ethiopia, India, Sri Lanka Portulaca yecorensis Henrickson & T.Van Devender – Mexico Portulaca zaffranii Danin – Mediterranian Formerly placed here Anacampseros