360 



STANDARDIZED PLANT NAMES 



Pear Pyrus 



For varieties of Pear cultivated for their 

 fruit see American Pomological Society's 

 List of Fruits, in Appendix. 



Almond P. . Pyrus amygdaliformis 



Alsatian P P. auricularis 



Balsam-pear Momordica charantia 

 BiRCHLEAF P. . Pyrus betulaefolia 

 Bretschneider p. 



P. bretschneideri 



Gallery P P. calleryana 



Common P P. communis 



Dusky P P. phaeocarpa 



Egg P P. ovoidea 



Hondo P. 



P. ussuriensis hondoensis 



Late P P. serotina 



Oleaster P. . . P. elaeagrifolia 



Pashi P P. pashia 



Pricklypear Opuntia 



ITssuRiAN P. . . Pyrus ussuriensis 

 Willowleaf p. . . P. salicifolia 



Pear Hawthorn 



Crataegus tomentosa 



Pearce Begonia . . Begonia pearcei 



Pearl Acacia, Pearl Everlasting, 

 etc. See Acacia, Everlasting, 

 etc. 



Pearlbush Exochorda 



Common P E. grandiflora 



Redbud P E. giraldi 



Turkestan P. . . E. korolkowi 

 Wilson P. . . E. giraldi wilsoni 



Pearleaf Crab . . Malus prunifolia 



Pearlstripe Flaxlily (Phormium 

 cookianum variegatumi Cy) 



Pearlwort . . Sagina; S. subulata 



Pea-shrub Caragana 



Dwarf P C. pygmaea 



LiTTLELEAF P. . . C. microphylla 

 Mongolian P. . . . C. chamlagu 

 Pea-tree . . . Caragana species 

 Russian Pea-shrub . . C. frutex 



Peatpink . . . Silene pennsylvanica 



Pea-tree 



Siberian P. Caragana arborescens 

 Weeping P. (C. a. pendula^ Cy) 



Pecan Hicoria pecan 



For cultivated varieties of Pecan see 

 American Pomological Society's List of 

 Fruits and Nuts, in Appendix. 



PEDICULARIS . . . WOODBETONY 



canadensis Early W. 



PEDICULARIS, continued 



lanceolata . Swamp Woodbetony 

 palustris .... European W. 

 PEDIOCACTUS 



simpsoni (Echinocactus simpsoni) 

 Snowball Cactus 

 Peegee Hydrangea ( Hydrangea pan- 



.iculata grandiflora] Cy) 

 Peking Cotoneaster, Peking Haw- 

 thorn, etc. See Cotoneaster, 

 Hawthorn, etc. 

 PELARGONIUM 



Pelargonium, Geranium 



acerifolium {Geranium citriodorum) 



Mapleleaf Geranium 



domesticum Lady Washington G. 



graveolens Rose G. 



hortorum Fish G. 



odoratissimum . . Nutmeg G. 



peltatum Ivyleaf G. 



zonale {Geranium zonale) 



Horseshoe G. 

 PELECYPHORA 



aselliformis . . Hatchet Cactus 

 pectinata 

 Pelicanflower 



Aristolochia grandiflora 

 Great P. . . . A. g. sturtevanti 



PELLAEA Cliffbrake 



atropurpurea .... Purple C. 

 densa Cy . . Cheilanthes siliquosa 

 falcata . Australian Cliffbrake 

 gracilis . . Cryptogramma stelleri 

 viridis {Pteris adiantoides) 



Green Cliffbrake 



PELTANDRA .... Arrow-arum 

 virginica (P. undulata Cy) 



Virginia A. 



PENIOCEREUS 



greggi {Cereus greggi) 



Deerhorn Cactus 

 PENNISETUM 



alopecuroides (P. japonicum Cy; 



Gymnothrix japonica) 

 atrosanguineum 



Crimson Fountain Grass 



Hort. var. of P. ruppeli. 



cupreum . Purple Fountain G. 



Hort. var. of P. ruppeli. 



glaucum (P. americanum Cy; ty- 

 phoideum) . . Pearl Mille;t 



