137 



Pinus coulteri, 61; jeffreyi, 61; 



ponderosa, 61 ; strobus, 24 

 Pirquet, Clemens, 105 

 Poa compressa, 25; pratensis, 25 

 Pogonia ophioglossoides, 103 ; verticil- 



lata, 60 

 Pohlia nutans, 1 10 

 Polycodium depressum, 5; macil- 



lentum, 5; nielanocarpum, 5 

 Polygonatiim biflorum, 21, 25 

 Polygonum hydropiper, 113; penn- 



syh-anicum, 113; sagittatum, 



113 

 Polypodium vulgare, 112 

 Polystichum acrostichoides, 112 

 Polytrichum juniperinum, 111 

 Populus granidentata, 25, 87; taca- 



mahaca, 25; tremuloides, 24 

 Portulaca from Mexico, Two new 



species of, Percy Wilson, 28 

 Portulaca conzatti, 28; mexicana, 29 

 Potamogeton foliosus, 45; natans, 45 

 Proceedings of the Club, 14, 31, 60, 



79, 114 

 Prunus avium, 87; pennsylvanicum, 



26; serotina, 26, 87; tomentosa, 



38; virginiana, 25 

 Psedera quinquefolia, 87 

 Psilocarya scirpoides, 47 

 Pteridium aquilinum, 112 

 Puccinellia fasciculata, 46 

 Pyrola eliiptica, 26 



Quercus alba, 87; bicolor, 87; coc- 

 cinea, 87; montana, 87; palus- 

 tris, 87; rubra, 87; velutina, 87 



Ramalay, Francis, Colorado Plant 



Life, Review, 29 

 Ranunculus abortivus, 21 

 Reed, George M., 62 

 Revegetation of Beech-Maple Area in 



the Douglas Lake Region, Mar- 



jorie L. Woollett and Dorothy 



Sigler, 21 

 Rhodobryum roseum. 111 

 Rhododendron maximum, 82; nudi- 



florum, 86; viscosum, 86 

 Rhodora canadense, 82 



Rhus copallina, 87; glabra, 87; 

 glabra borealis, 25; toxicoden- 

 dron, 87; vernix, 87 



Ribes cynosbati, 21; gooddingi, 54 



Richards, Herbert M., 17, 18, 33 



Robinia pseudo-acacia, 87 



Rose, Joseph Nelson, 66 



Rubus allegheniensis, 25; strigosus, 

 25; triflorus, 25 



Rudbeckia hirta, 34 



Rumex acetosella, 26 



Sagina procumbens, 49 



Sagittaria engelmanniana, 45; teres, 



45 

 Salix discolor, 87; humilis, 87; vitel- 



lina, 87 

 Sambucus canadensis, 87; racemosa, 



21 

 Sassafras variifolium, 87 

 Saururus cernuus, 114 

 Scilla sibirica, 59 

 Scirpus microcarpus, 47 

 Scleria torreyana, 47; triglomerata, 



47 

 Seaver, Fred J., 65 

 Selaginella apus, 45 

 Shantz, H. J., 88 

 Shorey, Archibald T., 112 

 Sigler, Dorothy and Marjorie L. 



Wollett, Revegetation of Beech- 

 Maple Areas in the Douglas 



Lake Region, 21 

 Silene caroliniana, 89; wherryi, 89 

 Sinnott, Edmund W., 88, 114 

 Skutch, Alexander F. and Robert 



L. Burwell, Jr., The Period of 



Anthesis in Hibiscus, 1 

 Small, John K., A New Chamaesyce 



from the Florida Keys, 6; A 



New Deerberry from the Gulf 



Regions, 5 

 Smilax rotundifolia, 86 

 Solidago petiolata Miller and Some 



Other Goldenrods, Kenneth K. 



Mackenzie, 95 

 Solidago asperula, 51; canadensis, 



26; linearia, 97; obtusifolia, 98 



petiolata, 96 



