| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| POFL17 | Pogogyne floribunda Jokerst | profuseflower mesamint | Lamiaceae
|
| PONU | Pogogyne nudiuscula Gray | Otay mesamint | Lamiaceae
|
| POSE2 | Pogogyne serpylloides (Torr.) Gray | thymeleaf mesamint | Lamiaceae
|
| POZI | Pogogyne ziziphoroides Benth. | Sacramento mesamint | Lamiaceae
|
| POGOG | Pogogyne Benth. | mesamint | Lamiaceae
|
| POALA3 | Pogonatum alpinum (Hedw.) R�hl. var. arcticum (Brid.) Brid. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POALB2 | Pogonatum alpinum (Hedw.) R�hl. var. brevifolium (R. Br.) Brid. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POALC4 | Pogonatum alpinum (Hedw.) R�hl. var. campanulatum (Hornsch.) Bruch & Schimp. in B.S.G. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POALF2 | Pogonatum alpinum (Hedw.) R�hl. var. fragile (Bryhn) Crum | Polytrichastrum alpinum var. fragile | Polytrichaceae
|
| POALM | Pogonatum alpinum (Hedw.) R�hl. var. macounii (Kindb.) Card. & Th�r. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POALS4 | Pogonatum alpinum (Hedw.) R�hl. var. septentrionale (Sw.) Brid. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POALS5 | Pogonatum alpinum (Hedw.) R�hl. var. sylvaticum (Menz.) Lindb. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POAL19 | Pogonatum alpinum (Hedw.) R�hl. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POBR14 | Pogonatum brachyphyllum (Michx.) P. Beauv. | pogonatum moss | Polytrichaceae
|
| POCA46 | Pogonatum capillare (Michx.) Brid. | Pogonatum dentatum | Polytrichaceae
|
| POCO34 | Pogonatum contortum (Brid.) Lesq. | contorted pogonatum moss | Polytrichaceae
|
| PODE10 | Pogonatum dentatum (Brid.) Brid. | toothed pogonatum moss | Polytrichaceae
|
| POLA20 | Pogonatum laterale Schimp. in Jard. | Pogonatum contortum | Polytrichaceae
|
| POMA37 | Pogonatum macounii (Kindb.) Kindb. & Mac. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POPET | Pogonatum pensilvanicum (Hedw.) P. Beauv. var. torreyanum (Brid.) Par. | Pogonatum pensilvanicum | Polytrichaceae
|
| POPE24 | Pogonatum pensilvanicum (Hedw.) P. Beauv. | Pennsylvania pogonatum moss | Polytrichaceae
|
| POSP14 | Pogonatum sphaerothecium Besch. | Polytrichum sphaerothecium | Polytrichaceae
|
| POTE13 | Pogonatum tenue Rau & Herv. | Pogonatum pensilvanicum | Polytrichaceae
|
| POURS | Pogonatum urnigerum (Hedw.) P. Beauv. var. subintegrifolium (Arnell & C. Jens.) M�ll. | Pogonatum urnigerum | Polytrichaceae
|
| POUR3 | Pogonatum urnigerum (Hedw.) P. Beauv. | pogonatum moss | Polytrichaceae
|
| POGON2 | Pogonatum P. Beauv. | pogonatum moss | Polytrichaceae
|
| PODI9 | Pogonia divaricata (L.) R. Br. ex Ait. f. | Cleistes divaricata | Orchidaceae
|
| POMA13 | Pogonia macrophylla Lindl. | Psilochilus macrophyllus | Orchidaceae
|
| POOPB | Pogonia ophioglossoides (L.) Ker-Gawl. var. brachypogon Fern. | Pogonia ophioglossoides | Orchidaceae
|
| POOP | Pogonia ophioglossoides (L.) Ker-Gawl. | snakemouth orchid | Orchidaceae
|
| POGON | Pogonia Juss. | pogonia | Orchidaceae
|
| POCA42 | Pogostemon cablin (Blanco) Benth. | patchouli | Lamiaceae
|
| POGOS | Pogostemon Desf. | pogostemon | Lamiaceae
|
| POAC8 | Pohlia acuminata Hoppe & Hornsch. | Pohlia elongata var. elongata | Bryaceae
|
| POAL20 | Pohlia albicans Lindb. | Pohlia wahlenbergii | Bryaceae
|
| POAN19 | Pohlia andalusica (H�hn.) Broth. | Andalusian pohlia moss | Bryaceae
|
| POAN20 | Pohlia andrewsii Shaw | Andrews' pohlia moss | Bryaceae
|
| POAND | Pohlia annotina (Hedw.) Lindb. var. decipiens Loeske | Pohlia annotina | Bryaceae
|
| POANL | Pohlia annotina (Hedw.) Lindb. var. loeskei Crum et al. | Pohlia annotina | Bryaceae
|
| POAN21 | Pohlia annotina (Hedw.) Lindb. | pohlia moss | Bryaceae
|
| POAP5 | Pohlia apiculata (Schwaegr.) Crum & Anderson | Bryum apiculatum | Bryaceae
|
| POAT6 | Pohlia atropurpurea (Wahlenb. in F�rnr.) H. Lindb. | pohlia moss | Bryaceae
|
| POBE10 | Pohlia beringiensis Shaw | Bering's pohlia moss | Bryaceae
|
| POBOB4 | Pohlia bolanderi (Sull.) Broth. var. bolanderi | Bolander's pohlia moss | Bryaceae
|
| POBOS3 | Pohlia bolanderi (Sull.) Broth. var. seriata Shaw | Bolander's pohlia moss | Bryaceae
|
| POBO7 | Pohlia bolanderi (Sull.) Broth. | Bolander's pohlia moss | Bryaceae
|
| POBR17 | Pohlia brevinervis Lindb. & Arnell | pohlia moss | Bryaceae
|
| POBU7 | Pohlia bulbifera (Warnst.) Warnst. | pohlia moss | Bryaceae
|
| POCAB | Pohlia camptotrachela (Ren. & Card.) Broth. var. bulbifera (Lam. & DC.) Wijk & Marg. | Pohlia bulbifera | Bryaceae
|
| POCAD | Pohlia camptotrachela (Ren. & Card.) Broth. var. decipiens (Loeske) Nyh. | Pohlia annotina | Bryaceae
|
| POCA44 | Pohlia camptotrachela (Ren. & Card.) Broth. | pohlia moss | Bryaceae
|
| POCA45 | Pohlia cardotii (Ren. in Ren. & Card.) Broth. | Cardot's pohlia moss | Bryaceae
|
| POCA47 | Pohlia carnea (Schimp.) Lindb. | Pohlia melanodon | Bryaceae
|
| POCO35 | Pohlia columbica (Kindb. in Mac. & Kindb.) Andrews | pohlia moss | Bryaceae
|
| POCOF3 | Pohlia commutata (Schimp.) Lindb. var. filum (Schimp.) Dus. | Pohlia filum | Bryaceae
|
| POCO36 | Pohlia commutata (Schimp.) Lindb. | Pohlia drummondii | Bryaceae
|
| POCRO | Pohlia cruda (Hedw.) Lindb. var. oregonensis (Par.) Wijk & Marg. | Pohlia cruda | Bryaceae
|
| POCR15 | Pohlia cruda (Hedw.) Lindb. | pohlia moss | Bryaceae
|
| POCR16 | Pohlia crudoides (Sull. & Lesq.) Broth. | pohlia moss | Bryaceae
|
| POCR17 | Pohlia cruegeri (Hampe) Andrews in Grout | Bryum apiculatum | Bryaceae
|
| POCU15 | Pohlia cucullata (Schwaegr.) Lindb. | Pohlia obtusifolia | Bryaceae
|
| PODE11 | Pohlia defecta (Sanio) Andrews in Grout | Pohlia erecta | Bryaceae
|
| PODE12 | Pohlia delicatula (Hedw.) Grout | Pohlia melanodon | Bryaceae
|
| PODRG | Pohlia drummondii (C. M�ll.) Andrews var. gracilis (Bruch & Schimp. in B.S.G.) Podp. | Pohlia filum | Bryaceae
|
| PODR2 | Pohlia drummondii (C. M�ll.) Andrews | Drummond's pohlia moss | Bryaceae
|
| POELE | Pohlia elongata Hedw. var. elongata | elongate pohlia moss | Bryaceae
|
| POELG | Pohlia elongata Hedw. var. greenii (Brid.) Shaw | Green's pohlia moss | Bryaceae
|
| POELM | Pohlia elongata Hedw. var. minor Hartm. | Pohlia elongata var. greenii | Bryaceae
|
| POEL4 | Pohlia elongata Hedw. | elongate pohlia moss | Bryaceae
|
| POER6 | Pohlia erecta Lindb. | erect pohlia moss | Bryaceae
|
| POFIC | Pohlia filiformis (Dicks.) Andrews in Grout var. concinnata (Spruce) Grout | Anomobryum filiforme | Bryaceae
|
| POFI12 | Pohlia filiformis (Dicks.) Andrews in Grout | Anomobryum filiforme | Bryaceae
|
| POFI11 | Pohlia filum (Schimp.) M�rt. | pohlia moss | Bryaceae
|
| POGR23 | Pohlia gracilis (Bruch & Schimp. in B.S.G.) Lindb. | Pohlia filum | Bryaceae
|
| POGRD | Pohlia grandiflora Lindb. ssp. proligera (Kindb. ex Breidl.) Kuc var. decipiens (Loeske) Kuc | Pohlia annotina | Bryaceae
|
| POGRP3 | Pohlia grandiflora Lindb. ssp. proligera (Kindb. ex Breidl.) Kuc | Pohlia proligera | Bryaceae
|
| POLE17 | Pohlia lescuriana (Sull.) Grout | Lescur's pohlia moss | Bryaceae
|
| POLO16 | Pohlia longibracteata Broth. in R�ll | longbract pohlia moss | Bryaceae
|
| POLO17 | Pohlia longicolla (Hedw.) Lindb. | pohlia moss | Bryaceae
|
| POLU6 | Pohlia ludwigii (Spreng. ex Schwaegr.) Broth. | Ludwig's pohlia moss | Bryaceae
|
| POME13 | Pohlia melanodon (Brid.) Shaw | pohlia moss | Bryaceae
|
| POMIA | Pohlia minor Schleich ex Schwaegr. ssp. acuminata (Hoppe & Hornsch.) Wijk & Marg. | Pohlia elongata var. elongata | Bryaceae
|
| POMIB | Pohlia minor Schleich ex Schwaegr. var. brachycarpa (Hoppe & Hornsch.) Wijk & Marg. | Pohlia elongata var. elongata | Bryaceae
|
| POMI19 | Pohlia minor Schleich ex Schwaegr. | Pohlia elongata var. greenii | Bryaceae
|
| PONUS | Pohlia nutans (Hedw.) Lindb. ssp. schimperi (C. M�ll.) Nyh. | Pohlia nutans | Bryaceae
|
| PONU70 | Pohlia nutans (Hedw.) Lindb. | pohlia moss | Bryaceae
|
| POOB6 | Pohlia obtusifolia (Brid.) L. Koch | obtuseleaf pohlia moss | Bryaceae
|
| POPA28 | Pohlia pacifica Shaw | Pacific pohlia moss | Bryaceae
|
| POPR17 | Pohlia proligera (Kindb. ex Breidl.) Lindb. ex Arnell | pohlia moss | Bryaceae
|
| POPU17 | Pohlia pulchella (Hedw.) Lindb. | Pohlia lescuriana | Bryaceae
|
| PORO10 | Pohlia rothii (Corr. ex Limpr.) Broth. | Pohlia filum | Bryaceae
|
| PORO7 | Pohlia rothii auct. plur. | Pohlia andalusica | Bryaceae
|
| PORU16 | Pohlia rutilans (Schimp.) Lindb. | Pohlia nutans | Bryaceae
|
| POSC12 | Pohlia schimperi (C. M�ll.) Andrews in Grout | Pohlia nutans | Bryaceae
|
| POSC16 | Pohlia schleicheri Crum | Pohlia filum | Bryaceae
|
| POSP12 | Pohlia sphagnicola (Bruch & Schimp.) Lindb. & Arnell | pohlia moss | Bryaceae
|
| POTO5 | Pohlia tozeri (Grev.) Delogne | Epipterygium tozeri | Bryaceae
|
| POTU5 | Pohlia tundrae Shaw | tundra pohlia moss | Bryaceae
|
| POVE6 | Pohlia vexans (Limpr.) H. Lindb. | pohlia moss | Bryaceae
|
| POWA70 | Pohlia wahlenbergii (Web. & Mohr) Andrews | Wahlenberg's pohlia moss | Bryaceae
|
| POHLI2 | Pohlia Hedw. | pohlia moss | Bryaceae
|