| Paleaepappus |
patagonicus |
| Panicum |
chloroleucum |
| Pantacantha |
ameghinoi |
| Pappostipa |
ameghinoi , arenicola , barrancaensis , braun-blanqueti , choconensis, chubutensis , colloncurensis, hieronymusii , ibarii, jucunda, kieslingii, maeviae, malahuensis , mapuche, marqueziana, nana , nicorae , parodiana , ruizlealii , semiperiana , sorianoi , vatroensis, zulmae |
| Parodia |
aureicentra, chrysacanthion, mammulosa, nivosa, penicillata, stuemeri, submammulosa, turecekiana |
| Parodianthus |
capillaris, ilicifolius |
| Parodiodoxa |
chionophila |
| Paspalum |
gracielae |
| Pavonia |
cymbalaria, glutinosa, revoluta, rubra |
| Pecluma |
barituensis |
| Pelexia |
ovatifolia, paludosa |
| Pennellia |
brachycarpa |
| Pennisetum |
rigidum |
| Peperomia |
aldrinii, armstrongii, hadrostachya, inaequalilimba |
| Perezia |
bellidifolia, burkartii, calophylla, delicata, lanigera , megalantha, volcanensis |
| Petalostelma |
sarcostemma |
| Petroravenia |
eseptata |
| Petunia |
linearis, occidentalis, patagonica |
| Phacelia |
sanzinii, sinuata |
| Phaiophleps |
biflora |
| Phalaris |
platensis |
| Philibertia |
affinis , barbata, candolleana, castillonii , cionophora , coalita, micrantha , mitophora, nivea, subnivea , tubata , tucumanensis , volcanensis |
| Philippiella |
patagonica |
| Phippsia |
wilczekii |
| Phlebolobium |
maclovianum |
| Physalis |
victoriana |
| Physaria |
crassistigma, lateralis, mendocina, okanensis, pygmaea |
| Phytolacca |
tetramera |
| Pilea |
jujuyensis |
| Piper |
tucumanum |
| Piptochaetium |
brachyspermum, burkartianum, cabrerae, calvescens, hackelii, napostaense |
| Pitcairnia |
chiriguana, oranensis, saltensis |
| Plagiobothrys |
calandrinioides, corymbosus |
| Plantago |
argentina, berroi, bismarckii, correae, densa, dielsiana, jujuyensis, moorei, pulvinata, sempervivoides, tandilensis, tehuelcha, ventanensis, venturii |
| Plectrocarpa |
rougesii, tetracantha |
| Pleurophora |
patagonica |
| Poa |
acutifolia, angustata, atropidiformis, barrosiana, bergii, breviculmis, cabreriana, calamagrostoidea, chrysantha, darwiniana, dolichophylla, durifolia, dusenii, erinacea, flabellata, glomerifera, grisebachii, hieronymi, hubbardiana, huecu, indigesta, iridifolia, ligularis, mendocina, nubensis, parviceps, planifolia, plicata, pungionifolia, ragonesei, schizantha, spiciformis , stepparia, stuckertii, subenervis, superata, tucumana, yaganica |
| Polygala |
argentinensis, corralitae, darwiniana, desiderata, hickeniana, hieronymi, jujuyensis, kurtzii, oedipus, oreophila, patagonica, persistens, pterolopha, resedoides, rosei, sabuletorum, santacruzensis, spinescens, stenophylla, ventanensis, williamsii |
| Polylepis |
australis |
| Polypogon |
parvulus |
| Polypsecadium |
arnottianum , burkartii, gilliesii , grandiflorum, magellanicum, tucumanense |
| Polystichum |
mohrioides |
| Porophyllum |
cabrerae |
| Portulaca |
argentinensis, confertifolia, echinosperma, fulgens, meyeri, obtusa, obtusifolia, papulosa, ragonesii |
| Potentilla |
tucumanensis |
| Primula |
comberi |
| Prosopidastrum |
angusticarpum, benthami, dehiscens, globosum, gracile, striatum |
| Prosopis |
abbreviata, alpataco, argentina, caldenia, calingastana, campestris, castellanosii, denudans, humilis, pugionata, ruizleali, torquata |
| Psila |
tenella |
| Psychotria |
argentinensis |
| Pteris |
exigua, famatinensis |
| Pterocactus |
araucanus, australis, fischeri, gonjianii, hickenii, megliolii, reticulatus, tuberosus, valentinii |
| Pteroglossa |
luteola, regia |
| Pteropepon |
argentinense |
| Pterygiosperma |
tehuelches |
| Puccinellia |
argentinensis, biflora, magellanica, mendozina, pusilla, skottsbergii |
| Puna |
bonniae, clavarioides |
| Puya |
assurgens, bravoi, castellanosii, harmsii, lilloi, micrantha, novarae, smithii, vervoorstii, volcanensis, weberiana, yakespala |
| Pycnophyllopsis |
muscosa |
| Pycnophyllum |
convexum, mucronulatum |
| Pyrrhocactus |
bulbocalyx, catamarcensis, kattermannii, pachacoensis, sanjuanensis, strausianus, umadeave |
