P. acaulis

P. acaulis may refer to:
 * Pedicularis acaulis, a perennial green root parasite plant species in the genus Pedicularis
 * Penstemon acaulis, a plant species in the genus Penstemon
 * Peperomia acaulis, a radiator plant species in the genus Peperomia
 * Phacelia acaulis, a scorpionweed species in the genus Phacelia
 * Phoenix acaulis, a palm species endemic to northern India and Nepal
 * Primula acaulis, a garden plant species

Synonyms

 * Podococcus acaulis, a synonym for Podococcus barteri, a palm species found in tropical Africa