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- Allium paczoskianum
- Allium paepalanthoides
- Allium palentinum
- Allium pallasii
- Allium pallens
- Allium pallens var. admirabile
- Allium pallens subvar. arenae-maris
- Allium pallens ssp. christophori
- Allium pallens var. lineolatum
- Allium pallens ssp. siciliense
- Allium pallens subvar. stoloniferum
- Allium palmeri
- Allium pamiricum
- Allium pangasicum
- Allium paniculatum
- Allium paniculatum ssp. exaltatum
- Allium paniculatum ssp. jacobi
- Allium paniculatum ssp. marginatum
- Allium paniculatum ssp. salinum
- Allium paniculatum ssp. villosulum
- Allium panjaoense
- Allium pannonicum
- Allium papillare
- Allium paradoxum: Few-flowered Leek
- Allium paradoxum var. normale
- Allium parciflorum
- Allium pardoi
- Allium parishii : Parish's Onion
- Allium parnassicum var. heterodoxum
- Allium parnassicum ssp. minoicum
- Allium parryi : Parry's Fringed Onion
- Allium parviflorum
- Allium parvulum
- Allium parvum : Small Onion
- Allium passeyi : Passey's Onion
- Allium paterfamilias
- Allium paucibulbosum
- Allium pauciflorum
- Allium pauli
- Allium peirsonii
- Allium pekinense
- Allium pendulinum : Italian Garlic
- Allium peninsulare : Mexicali Onion
- Allium peninsulare var. franciscanum
- Allium pentadactyli
- Allium perdulce
- Allium perdulce: Plains Onion
- Allium peroninianum
- Allium pervestitum
- Allium pevtzovii
- Allium phanerantherum
- Allium phanerantherum ssp. deciduum
- Allium phariense
- Allium phitosianum
- Allium phrygium
- Allium phthioticum
- Allium pictistamineum
- Allium pikeanum
- Allium pilosum
- Allium platakisii
- Allium platycaule : Broadstemmed Onion
- Allium platyspathum
- Allium platystylum
- Allium pleianthum : Manyflower Onion
- Allium plummerae : Tanners Canyon Onion
- Allium plurifoliatum
- Allium plurifoliatum var. zhegushanense
- Allium podolicum
- Allium poeppigi
- Allium pogonotepalum
- Allium polyastrum
- Allium polyphyllum
- Allium polyrhizum
- Allium ponticum
- Allium popovii
- Allium porrum : Garden Leek
- Allium porrum sp. anatolicum
- Allium porrum var. australieuropeum
- Allium porrum var. borealieuropeum
- Allium potanini
- Allium potosiense
- Allium praecox: Early Onion
- Allium praelatitium
- Allium praemixtum
- Allium prattii
- Allium proliferum
- Allium procerum
- Allium proponticum
- Allium protensum
- Allium pruinosum
- Allium przewalskianum
- Allium pseudo-calyptratum
- Allium pseudo-japonicum
- Allium pseudoalbidum
- Allium pseudoampeloprasumv
- Allium pseudobodeanum
- Allium pseudobulbiferum
- Allium pseudocyaneum
- Allium pseudoflavum
- Allium pseudoglobosum
- Allium pseudophanerantherum
- Allium pseudopulchellum
- Allium pseudoseravschanicum
- Allium pseudostamineum
- Allium pseudostrictum
- Allium pseudowinklerianum
- Allium pseudoxiphopetalum
- Allium pskemense
- Allium pueblanum
- Allium pugeti
- Allium pulchellum
- Allium pumilum
- Allium punctum: Dotted Onion
- Allium purdomii
- Allium purpurescens
- Allium pusillum
- Allium pustulosum
- Allium pygmaeum
- Allium pyrenaicum
- Allium pyrrhorrhizum
Read more about this topic: List Of Allium Species