Families (As per The Plant List)

P

Paeoniaceae - 1 ( Paeonia emodi)

Papaveraceae - 39 ( Argemone ochroleuca, Corydalis boweri, Corydalis cashmeriana, Corydalis casimiriana, Corydalis chaerophylla, Corydalis cornuta, Corydalis crithmifolia, Corydalis diphylla, Corydalis duthiei, Corydalis elegans, Corydalis falconeri, Corydalis filiformis, Corydalis flabellata, Corydalis gortschakovii, Corydalis govaniana, Corydalis lathyroides, Corydalis longipes, Corydalis meifolia, Corydalis murreeana, Corydalis nana, Corydalis polygalina, Corydalis pseudolongipes, Corydalis shakyae, Corydalis sikkimensis, Corydalis stracheyi, Corydalis thyrsiflora, Corydalis vaginans, Dicentra macrocapnos, Dicentra roylei, Dicentra scandens, Dicranostigma lactucoides, Hypecoum leptocarpum, Meconopsis aculeata, Meconopsis napaulensis, Meconopsis paniculata, Meconopsis robusta, Papaver dubium, Papaver dubium var. glabrum, Papaver nudicaule)

Pittosporaceae - 2 ( Pittosporum eriocarpum, Pittosporum napaulense)

Plantaginaceae - 7 ( Callitriche palustris, Callitriche stagnalis, Hemiphragma heterophyllum, Hippuris vulgaris, Pedicularis siphonantha, Plantago erosa, Veronica capitata)

Plumbaginaceae - 1 ( Plumbago zeylanica)

Polygalaceae - 3 ( Polygala irregularis, Polygala sibirica var. elegans, Polygala tatarinowii)

Polygonaceae - 13 ( Aconogonon molle, Aconogonon rumicifolium, Bistorta affinis, Bistorta vivipara, Fagopyrum esculentum, Oxyria digyna, Persicaria capitata, Persicaria microcephala, Persicaria runcinata, Polygonum polystachyum, Rheum webbianum, Rumex dentatus, Rumex nepalensis)

Portulacaceae - 2 ( Portulaca paniculata, Portulaca parvula)

Potamogetonaceae - 1 ( Potamogeton indicus)

Primulaceae - 4 ( Anagallis arvensis, Androsace studiosorum, Maesa chisia, Primula hopeana)