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Pterocarpus soyauxii

Pterocaulon pycnostachyum

Dense-spike blackroot

Pterocaulon virgatum

Wand blackroot

Pterocarpus macrocarpus

Pterostyrax hispidus

Eulophia ecristata

Cymopterus terebinthinus var. albiflorus

Pteryxia terebinthina var. calcarea

Ptilagrostis kingii

Ptilidium californicum

Ptilimnium macrospermum

Ptilium crista-castrensis

Piper baccans

Ptychosperma macarthuri

Puccinellia distans subsp. distans

Quercus × shirlingii

Ptychosperma elegans

Alexander palm

Puccinellia arctica

Cymopterus terebinthinus

Puccinellia nutkaensis