download alphabetical list - Royal Botanic Gardens

Pelargonium tomentosum 'Variegatum'
Pelargonium x domesticum 'Delli'
Pelargonium x domesticum 'Rim Flash'
Pelargonium x domesticum 'Strawberry Cheesecake'
Pelargonium x domesticum 'Sunrise'
Pelargonium x hortorum 'UNKNOWN'
Pelargonium x hortorum 'Orange Fizz'
Pelargonium x limoneum
Pelargonium x nervosum
Pelargonium zonale
Pellaea falcata (R.Br.) Fée
Pellaea falcata (R.Br.) Fée var. falcata
Pellaea nana (Hook.) Bostock
Pellaea ovata
Pellaea paradoxa (R.Br.) Hook.
Pellaea rotundifolia (G.Forst.) Hook.
Pellaea viridis (Forssk.) Prantl
Pellionia daveauana N.E.Br.
Peltophorum (Vogel) Benth.
Peltophorum africanum Sond.
Peltophorum dubium
Pennisetum 'Moudry'
Pennisetum advena 'Rubrum Dwarf'
Pennisetum alopecuroides (L.) Spreng.
Pennisetum setaceum 'Rubrum Dwarf'
Pennisetum setaceum 'Rubrum'
Pennisetum setaceum (Forssk.) Chiov.
Pennisetum villosum R.Br.
Penstemon 'Unknown'
Penstemon 'Alice Hindley'
Penstemon 'Evelyn'
Penstemon 'Garnet'
Penstemon 'Hidcote Pink'
Penstemon 'Newbury Gem'
Penstemon 'Red Ensign'
Penstemon 'Scarlet Queen'
Penstemon 'Sour Grapes'
Penstemon 'Swan Lake'
Penstemon 'Van Hahn'
Penstemon albidus
Penstemon aspinus
Penstemon barbatus 'Unknown'
Penstemon barbatus (Carrière) Roth
Penstemon brandegei Porter
Penstemon cultivars 'Schoenholzeri'