Comprehensive Scheme for Standardized Abbreviation of Usable Plant-Family Names and Type-Based Suprafamilial Names

Abbrsort descending Family
OROB Orobanchaceae
ORON Orontiaceae
ORTE Ortegaceae
ORYZ Oryzaceae
OSMU Osmundaceae
OSYR Osyridaceae
OXAL Oxalidaceae
OXYC Oxycoccaceae
OXYL Oxycladaceae
OXYS Oxystylidaceae
PACH Pachysandraceae
PACO Pacouriaceae
PAEO Paeoniaceae
PAGA Pagamaeaceae
PAIV Paivaeusaceae
PALM Palmae
PANC Pancratiaceae
PAND Pandaceae
PANG Pangiaceae
PANI Panicaceae
PANN Pandanaceae
PAPA Papaveraceae
PAPI Papilionaceae
PAPP Pappophoraceae
PAPY Papyraceae