| 1525 | Psilostrophe cooperi | yellow-orange 25-30cm 155 | G | 
      
                                                                      | 1527 | Pterostyrax corymbosus | white 4-15m 142 | G | 
      
                                                                      | 1528 | Pulsatilla alpina ssp apiifolia | yellow 10-50cm 83 159 | G | 
      
                                                                      | 1529 | Pulsatilla ambigua | dark rose 16-22cm 44 140 | G | 
      
                                                                      | 1531 | Pulsatilla campanella | blue-violet 14-20cm > | G | 
      
                                                                      | 1532 | Pulsatilla dahurica | pale lilac-pale bluish violet 25-40cm 159 | G | 
      
                                                                      | 1533 | Pulsatilla georgica | purple 30cm 111 | G | 
      
                                                                      | 1535 | Pulsatilla grandis | violet-purple 5-30cm 84 | G | 
      
                                                                      | 1536 | Pulsatilla grandis 'Papageno' | purple fringed 15-30cm 49 | G | 
      
                                                                      | 1538 | Pulsatilla montana | black 25cm 111 | G | 
      
                                                                      | 1540 | Pulsatilla pratensis | purple-violet 8-30cm 159 | G | 
      
                                                                      | 1541 | Pulsatilla pratensis ssp nigricans | dark purple-black 15-30cm 111 | G | 
      
                                                                      | 1542 | Pulsatilla sukaczewii | yellow/white 5-15cm 21 | G | 
      
                                                                      | 1543 | Pulsatilla vulgaris | dark purple flr/deeply cut lvs 20cm 140 | G | 
      
                                                                      | 1544 | Pulsatilla vulgaris | mix 15-40cm 140 | G | 
      
                                                                      | 1545 | Pulsatilla vulgaris | pink 15-40cm 155 | G | 
      
                                                                      | 1546 | Pulsatilla vulgaris | purple 15-40cm > | G | 
      
                                                                      | 1547 | Pulsatilla vulgaris | red 15-40cm 19 | G | 
      
                                                                      | 1548 | Pulsatilla vulgaris | rose 15-40cm 140 | G | 
      
                                                                      | 3271 | Pyrola americana | Connecticut: Franklin 4 | W | 
      
                                                                      | 3272 | Pyrola americana | Connecticut: Southeast 28 | W | 
      
                                                                      | 1552 | Ranunculus calandrinioides | white/tinged pink to 20cm 21 | G | 
      
                                                                      | 1553 | Ranunculus californicus | yellow to 70cm 24 | G | 
      
                                                                      | 1554 | Ranunculus gramineus | yellow 30-45cm 74 | G | 
      
                                                                      | 1555 | Ranunculus hispidus (ex Washington Co, Texas) | yellow to 30cm 94 | G | 
      
                                                                      | 1556 | Ranunculus platanifolius | white 30-100cm 44 | G | 
      
                                                                      | 1557 | Ratibida columnifera | red shades to 1m 155 | G | 
      
                                                                      | 1558 | Rebutia minuscula | red 4cm 21 | G | 
      
                                                                      | 1559 | Rhamnus crocea | cream flr/red frt 1.2-2m 29 | G | 
      
                                                                      | 1560 | Rhaponticum coniferum | pink-purple flr/white-felted lvs 15-30cm 74 | G | 
      
                                                                      | 1562 | Rhexia virginica | rose-lavender 20-60cm 43 | G | 
      
                                                                      | 3275 | Rhodiola rhodantha | pink 30cm Colorado: Park Co 2505m 111 | W | 
      
                                                                      | 3276 | Rhodiola rosea | pink 18cm Maine: Washington Co 146 | W | 
      
                                                                      | 1563 | Rhododendron kiusianum | rose-purple 45-60cm 165 | G | 
      
                                                                      | 3278 | Rhododendron macrophyllum | pink 1-5m Oregon: Josephine Co 25 | W | 
      
                                                                      | 1564 | Rhododendron pseudochrysanthum | pink 90-250cm 28 | G | 
      
                                                                      | 1566 | Rhododendron yakushimanum x bureavii | pale pink-white to 1m 28 | G | 
      
                                                                      | 1567 | Rhodotypos scandens | white flr/jet-black frt to 2m 100 | G | 
      
                                                                      | 1568 | Ribes sanguineum v glutinosum | white/rose pink 1-4m 151 | G | 
      
                                                                      | 1569 | Rohdea japonica | pale yellow flr/red frt 30-50cm 28 | G | 
      
                                                                      | 1570 | Romanzoffia unalaschcensis | white 20-30cm 31 | G | 
      
                                                                      | 1571 | Romulea bulbocodium v crocea | yellow 10-15cm 122 | G | 
      
                                                                      | 1572 | Romulea rosea | pink-magenta 6-15cm 48 | G | 
      
                                                                      | 1573 | Romulea subfistulosa | rose-pink/yellow eye 10-25cm 11 | G | 
      
                                                                      | 1576 | Rosa 'Warm Welcome' | semi-double orange to 180cm 166 | G | 
      
                                                                      | 1574 | Rosa glauca | pink flr/glaucous-purple lvs 1.5-3m 54 142 | G | 
      
                                                                      | 1575 | Rosa luciae | white to 6m 166 | G | 
      
                                                                      | 1577 | Roscoea scillifolia f atropurpurea | dark purple-black 10-25cm 164 | G | 
      
                                                                      | 1578 | Roscoea sp | purple 10cm 46 | G | 
      
                                                                      | 3280 | Rubus spectabilis | magenta 1-4m Washington: Pierce Co 230m 89 | W |