Seed Plants, Ferns, Fern Allies of the Austin Region 95 



Panicum sanguinale L 



Panicum Scribnerianum Nash 



Panicum texanum Buckl 



Papaver dubium L 



Paper Mulberry 



Parietaria obtusa Rydb 



Parietaria pennsylvanica Muhl 



Parkinsonia aculeata L 



Paronychia dichotoma Nutt 



P. Lindheimeri Engelm 



Parthenium Hysterophorus L 



Parosela aurea Britton 



Parosela enneandra Brit. 



Parosela frutescens Vail 



Parrots Feather 



Parthenocissus quinquefolia Planch. . 

 Paspalum Hallii Vasey and Scribn. . . 



P. pubiflorum Rupr 



Paspalum stramineum Nash 



Pavonia lasiopetala Scheele ......... 



Peach-leaved Dock 



Pearlwort 



Pecar, 



Pedis angustifolia Torr 



Pellaea atropurpurea Link 



Pellaea flexuosa Link 



Pellitory 



Penstemon Cobaea Nutt 



Penstemon Mackayanus K. and W. . . 



Peppergrass 



Peppermint 



Pepper Vine 



Perennial Ragweed 



Persicaria hydropiperoides Small .... 

 Persicarla lapathilofia S. F. Gray . . . 



Persicaria pennsylvanica Small 



Persicaria punctata Small 



Persicaria setacea Small 



Petalostemon pubescens Heller 



Petalostemon purpureus Rydb 



Petunia parviflora Juss 



Phacelia congesta Hook 



Phacelia patuli flora Gray 



Phalaris caroliniana Walt 



Philibertella crispa Vail 



Philibertia undulata Gray 



Phlox Drummondii Hook 



Phlox Roemerlana Sch 



Phlox tenuis E. Nelson 



Phoradendron flavescens Nutt 



Phyla nodiflora Green 



Phyllanthus polygonoides Nutt 



Phy sails angulata L 



Physalis heterophylla Nees 



Physalis mollis Nutt 



Physostegla Intermedia A. Gray 



Phytolacca decandra L 



Pigweed 



Pigweed 



Pinaropappus roseus Lens 



Pin Clover 



Pinweed 



Plantago aristata Michx 



Plantago heterophylla Nutt 



Plantago rhodosperma Deen 



Plantago Wrightiana Deen 



Platanus occldentalis L 



Plantain 



Pluchea purpurascens DC 



Poa annua L 



p oa arachnlfera Torr 



°oinsettla dentata Sma n 



p olnsettla havanensls Small 



Poinsettia heterophylla Small 



Pointed Leaf 



11 Poison Ivy 47 



10 Poison Oak 47 



11 Poke Berry 27 



31 Pokeweed 27 



22 Polanisla graveolens Raf 33 



23 Polanisla trachysperma T. and G. . . . 33 



23 Polygala alba Nutt 43 



36 Polygala Lindheimeri A. Gray 43 



26 Polygonum convolvulus L 24 



26 Polygonum erectum 24 



82 Polygonum hydropiperoides Michx. . . 23 



39 Polygonum lapathl folium L 24 



39 Polygonum pennsylvanlcum L 24 



39 Polygonum punctatum Ell 24 



55 Polygonum ramoslsslmum Michx.... 24 



49 Polygonum setaceum Baldw 24 



11 Polyodon texanus Nash 13 



11 Polypodlum polypodioides A.S. Hitch- 



11 cock (P. Incanum Sw.) 6 



51 Polypody 6 



24 Polypremum procumbens L 60 



28 Polyterls callosa Gray 84 



— Pondweed 8 



84 Poppy 31 



6 Poppy Mallow 50 



6 Populus deltoldes Marsh 21 



23 Portulaca lanceolata Engelm 27 



71 Portulaca oleracea L 27 



71 Portulaca pilosa L 28 



32 Possum Haw 47 



68 Post Oak 21 



49 Potamogeton lucens L 8 



76 Powder Horn — 



23 Prairie Clover 39 



24 Prairie Clover 40 



24 Prickly Ash 42 



24 Prickly Lettuce 86 



24 Prickly Pear 53 



40 Prickly Solanum 65 



40 Primrose 54 



64 Primrose 55 



63 °rosopis glandulosa Torr 36 



63 Prostrate spurge 44 



11 °runus amerlcana Marsh 35 



61 °runus angustifolia Marsh 35 



61 °runus serotina Ehrh 35 



63 °soralea cuspldata Pm-sh 40 



63 p soralea hypogaea Nutt 40 



63 Psoralea rhomblfolia T. and G 40 



73 Ptelea trifoliata L 42 



67 Puccoon 66 



45 Pursley 27 



64 Purslane Speedwell 71 



65 Pyrrhopappus multlcaulis DC 87 



65 Quamasla hyacinthifolla Britton.... 18 



69 Queen's Delight 46 



27 Quercus brevlloba Sargent 21 



25 Quercus fusiformis Small 21 



26 Quercus macrocarpa Michx 21 



87 Quercus marilandica Muench 21 



41 Quercus minor Sargent 21 



52 Quercus schneckil Britton 21 



72 Q. stellata Wang 21 



73 Q. texana Sarg., not Buckl 21 



73 Quercus' vlrginiana Mill 22 



73 Rain Lily 19 



34 Ranunculus macranthus Scheele 30 



72 Ratlblda columnaries D. Don 82 



80 Rattan 48 



14 Rattle Box 37 



14 Rattle Bush 37 



45 Red Buckeye 48 



45 Red-bud 36 



46 Red Cedar 7 



46 Red Mulberry 23 



