PORTULACA— PRIMROSE 



381 



PORTULACA PoRTULACA 



grandiflora Common P. 



oleracea {aurea) Common Purslane 

 Hort. var. of Portulaca: 



Thellusson Portulaca (P. grandi- 

 flora thellussoni\ Cy; thellussotii) 

 Thorburn p. (P. g. thorhurni] Cy; 



thorburni) 

 White P. [P . g . alhiflora] Cy) 



POSOQERIA 



latifolia (Oxyanthus isthmia Cy) 



Possumhaw Ilex decidua 



Post Oak .... Quercus stellata 

 Potanin Indigo . Indigofera potanini 

 Potato .... Solanum tuberosum 

 AiRPOTATo . . Dioscorea bulbifera 

 SwEETPOTATo . . Ipomoea batatas 

 PoTATOBEAN .... Apios tubcrosa 



POTENTILLA .... Cinquefoil 

 anserina (Argentina anserina) 



SiLVERWEED 



argentea . . Silver Cinquefoil 

 atrosanguinea . . Himalayan C. 

 canadensis {Fragaria canadensis) 



Common C. 



formosa P. nepalensis 



friedrichseni 



Friedrichsen Cinquefoil 



Hort. var. of P. fruticosa. 



fruticosa Shrubby C. 



— dahurica .... Dahurian C. 

 — veitchi Veitch C. 



See also hort. var. list below. 



grandiflora Alpine C. 



macnahiana Cy . . . Macnab C. 



See hort. var. list below. 



nepalensis {formosa) . . Nepal C. 



obriana O'Brian C. 



pyrenaica Pyrenees C. 



rupestris Cliff C. 



russelliana Russell C. 



tridentata WineleafC. 



veitchi ... P. fruticosa veitchi 

 Hort. var. of Potentilla: 



Friedrichsen Cinquefoil (P. fru- 

 ticosa friedrichseni] Cy) 

 Macnab C. (P. macnahiana\ Cy) 



POTERIUM Burnet 



The common name Burnet applies also 

 to the closely allied genus Sanguisorba. 



POTERIUM, continued 



obtusum . . . Japaxkse Burnet 



sanguisorba . Sanguisorba minor 



Potherb Mustard Brassica japonica 



POTHOS 



argyraea . . . Silver Ivy-arum 



llort. var. of Scindapsus pictus. 

 Pot-marigold 



Calendula: Calendula officinalis 

 Potts Tritonia . . . Tritonia pottsi 

 Pouched Nemesia Nemesia strumosa 

 Powdered Thalia . Thalia dealbata 

 Powell Crinum . . Crinum powelli 

 Prairie Aster, Prairie Cr.^, etc. 



See Aster, Crab, etc. 

 Prairieclover . . . Petalostemum 



Silky P P. villosum 



Tennessee P. . . P. decumbens 



White P P. candidum 



Prairiegentian 



Eustoma russellianum 



Prairiem ALLOW Sidalcea 



Checkerbloom . . S. malvaeflora 



White P S. Candida 



Pratt Barberry, Pratt Rose, etc. 



See Barberry, Rose, etc. 

 Price Violet .... Viola priceana 



Pricklepoppy Argemone 



Crested P A. platyceras 



Hedgehog P. A. platyceras hispida 



Showy P A. grandiflora 



Prickly Comfrey, Prickly Juni- 

 per, etc. See Comfrey, Juniper, 

 etc. 



Prickly-ash Zanthoxylum 



Common P. . . . Z. americanum 

 Hercules-club . Z. clava-herculis 



Japanese P Z. piperitum 



Pricklypear Opuntia 



Common P O. compressa 



Prickly-thrift . . . Acantholimon 



Comb P A. glumaceum 



PRiDE-oF-MADEiRAEchiumfastuosum 



Primrose Primula 



Alpine Auricula. Hort. var. of 

 P. auricula. 



Arabian P P. verticillata 



Arab-primrose . Arnebia cornuta 

 Auricula . . . Primula auricula 



Baby P P. forbesi 



Bigleaf P P. cortusoides 



