P. A. Rydberg

16 plates

• Rhododendron catawbiense Michx. 7 Jul 1925 to 8 Jul 1925
• Cardamine oligosperma Nutt. 10 Aug 1897
• Ranunculus trichophyllus Chaix 7 Aug 1897
• Minuartia groenlandica (Retz.) Ostenf. 7 Jul 1925 to 8 Jul 1925
• Oenothera elata subsp. hirsutissima (A. Gray ex S. Watson) W. Dietr. 15 Jul 1905
• Cicuta occidentalis Greene 3 Aug 1897
• Sium suave Walter 3 Aug 1897
• Viola adunca Sm. 7 Aug 1897
• Leiophyllum buxifolium (Bergius) Elliott 7 Jul 1925 to 8 Jul 1925
• Lomatium macrocarpum (Hook. et al.) J.M. Coult. & Rose 1897
• Bupleurum americanum J.M. Coult. & Rose 18 Aug 1897
• Viola rydbergii Greene
• Viola rydbergii Greene
• Perideridia gairdneri subsp. borealis T.I. Chuang & Constance 14 Aug 1897
• Penstemon glaber Pursh 8 Jun 1897
• Silene oregana S. Watson 10 Aug 1897