Plumbago; Plumbago zeylanica L., 577
Poinsettia (Christmas Flower, Christmas Star,
Lobsterplant, Mexican Flameleaf,
Paintedleaf); Euphorbia pulcherrima Willd.
ex Klotzsch (Synonyms: E. pulcherrima var.
plenissima hort., Poinsettia pulcherrima
(Willd. ex Klotzsch) Graham), 578
Poison Hemlock (Carrot Fern, Fool’s Parsley,
Hemlock, Spotted Hemlock, Spotted
Parsley); Conium maculatum L., 578
Poison Ivy (Eastern Poison Oak); Toxicodendron
pubescens Mill. (Synonyms: Rhus
toxicodendron L., R. toxicodendron var.
quercifolium Michx., Toxicodendron
quercifolium (Michx.) Greene, T. toxicarium
(Salisb.) Gillis), 579
Poke Root (Pigeonberry, Pokeweed, Virginia Poke);
Phytolacca americana L. (Synonym: P.
decandra L.), 580
Poley; Teucrium polium L., 582
Pomegranate; Punica granatum L., 582
Pondlily, Variegated Yellow Pondlily; Nuphar
variegata Durand (Synonyms: Nuphar
advena subsp. variegata (Dur.) R. T. Clausen,
N. fraterna (G.S. Mill. & Standl.) Standl., N.
lutea ssp. variegata (Dur.) E.O. Beal,
Nymphaea advena var. variegata (Dur.)
Fernald, N. americana G.S. Mill. & Standl.,
N. fraterna G.S. Mill. & Standl., N. variegata
(Dur.) G.S. Mill., Nymphozanthus variegatus
(Dur.) Fernald), 584
Pontian Rhododendron; Rhododendron ponticum L.,
584
Poplar; Populus sp., 585
Potato; Solanum tuberosum L., 586
Premorse, Devil’s Bit; Succisa pratensis Moench
(Synonym: Scabiosa succisa L.), 587
Prickly Ash; Zanthoxylum spp., 587
Prickly Pear (Barbary Fig, Indian Fig, Spineless
Cactus); Opuntia ficus-indica (L.) Mill.
(Synonym: Cactus ficus-indica L., Opuntia
ficus-indica var. gymnocarpa (F.A.C. Weber)
Speg.), 588
Prickly Poppy (Mexican Prickly Poppy, Mexican
Poppy, Yellow Thistle); Argemone mexicana
L., 589
Prince’s Feather, Amaranth; Amaranthus
hypochondriacus L. (Synonyms: A. hybridus
var. erythrostachyus Moq., A. hybridus var.
hypochondriacus (L.) B. L. Rob.), 589
Privet (Common Privet, European Privet); Ligustrum
vulgare L. (Synonyms: L. insulare Decne., L.
insulense Decne.), 590
Prostrate Knotweed (Knotgrass, Knotweed);
Polygonum aviculare L. (Synonym: P.
heterophyllum Lindm.), 590
Psyllium, Blonde Ispaghula (Blond Psyllium, Indian
Plantago, Ispaghul); Plantago ovata Forsk.
(Synonym: P. ispaghula Roxb. ex Fleming),
591
Puffball; Lycoperdon spp. (Not in GRIN), 592
Pulsatilla, Pasqueflower (European Pasqueflower);
Anemone pulsatilla L. (Synonyms: A.
serotina (Schur) Coste, Pulsatilla vulgaris
Mill., P. vulgaris var. serotina Schur), 593
Pumpkin (Marrow, Squash); Cucurbita pepo L.
(Synonyms: Cucumis pepo (L.) Dumort.,
Cucurbita mammeata Molina), 594
Pumpkin Seed; Cucurbita pepo L. (Synonyms:
Cucumis pepo (L.) Dumort., Cucurbita
mammeata Molina), 595
Puncture Vine (Caltrop, Cat’s Head, Common
Dubbletjie, Devil’s Thorn, Devil’s Weed,
Goathead); Tribulus terrestris L., 595
Purging Croton; Croton tiglium L., 596
Purging Nut, Bubble Bush (Barbados Nut, Physicnut,
Purgenut); Jatropha curcas L., 596
Purple Beebalm (Beebalm, Horsemint, Wild
Bergamot); Monarda fistulosa L., 597
Purple Gromwell, Red Gromwell; Lithospermum
erythrorhizon Siebold & Zucc., 598
Purple Loosestrife (Purple Lythrum, Spiked
Loosestrife); Lythrum salicaria L., 598
Purple Tephrosia; Tephrosia purpurea (L.) Pers., 599
Purslane; Portulaca oleracea L., 599
Pussytoes, Cat’s Foot (Rose Pussytoes); Antennaria
dioica (L.) Gaertn. (Synonym: Gnaphalium
dioicum L.), 600
Pussy Willow (American Pussy Willow); Salix
discolor Muhl., 600
Pygeum; Prunus africana (Hook. f.) Kalkman
(Synonym: Pygeum africanum Hook. f.), 600
Pyrethrum (Dalmatia Pyrethrum, Dalmatian Insect
Flower); Tanacetum cinerariifolium (Trevir.)
Sch. Bip. (Synonyms: Chrysanthemum
cinerariifolium (Trevir.) Vis., Pyrethrum
cinerariifolium Trevir.), 601QQuassia (Bitterash, Bitterwood, Jamaica Quassia);
Picrasma excelsa (Sw.) Planch. (Synonym:
Quassia excelsa Sw.), 603
Quebracho; Aspidosperma quebracho-blanco
Schltdl., 603
Queen Anne’s Lace; Daucus carota L. subsp. carota,
604