1915] Index 249 
Ribes oxyacanthoides, 152; pro- difformis, 50; gracilis, 52, var. 
stratum, 152. grandiflora, 52; grandiflora, 52; 
Riccia arvensis, 120. lanceolata, 50, 51; stellaris, 52. 
Ricciella crystallina, 120. Sagina nodosa, var. glandulosa, 154; 
Riella, 109. procumbens, 148. 
Roque Bluffs, Maine, Plants and Sagittaria latifolia, 209, 211, forma 
plant Societies at, 145. gracilis, 211, forma hastata, 211, 
Rosa nitida, 150; rugosa, 216; forma obtusa, 211; teres, 142, and 
virginiana, 35, 37, 146-148, 150, Potamogeton lucens L., A Cor- 
153, 221. rection concerning, 142. 
Rosaceae, 37. St. John, H., Elymus arenarius and 
Rubus, 86, 153; canadensis, 153; its American Representatives, 98; 
Chamaemorus, 149; nigricans, 152, An insular Variety of Solidago 
153; tardatus, 152, 153; triflorus, sempervirens, 26; The Occur- 
152. rence of Botrychium virginianum 
Rudbeckia hirta, 36. var. europacum in America, 233; 
Ruellia carolinensis, 134; carolini- Rumex persicarioides and its Allies 
ensis, 134, 137, var. parviflora, 134, in North America; 73; Some ano- 
137; ciliosa, 134, 137, var. am-. malous Species and Varieties of 
bigua, 134, var. parviflora, 134, 137. Bidens in eastern North America, 
Rumex, 73, 75, 79, 175, 226; Acetosa, 20. 
175; Acetosella, 175, 215, 226; Salicornia, 178; ambigua, 178; euro- 
altissimus, 175; Britannica, 151, paea, 147, 178, 215, 221, var. pachy- 
175; crispatulus, 77; crispus, 175, stachya, 178; mucronata, 178. 
215; fueginus, 76, 81; hastatulus, Salix alpina, 136, 137; arbuscula a 
175; hispidus, 150; idaeus, var. erecta, forma angustifolia, 136; 
aculeatissimus, 153; limosus, 80; babylonica, 214; balsamifera, 152, 
maritimum, var. fueginum, 79; 153; discolor, 64; 152, var. erio- 
maritimus, 73, 75-77, 80, 83, var. cephala, 152; fusca, 136; humilis, 
athrix, 79, 80, 82, var. fuegina, 152; lanata, 136; leiolepis, 159; 
76, fueginus, 77, 79-81, 83, 175; lucida, 150; Myrsinites, 136, 8 
mexicanus, 30, 175; obtusifolius, Jacquiniana, 136; rostrata, 152; 
77, 175; pallidus, 146, 175; Patien- squamata, 64; tristis, 136, 137. 
tia, 146, 151, 175; persicarioides, Salsola, 178; Kali, 178, var. caro- 
73-77, 80, 81, 83, 175, and its liniana, 178, var. tenuifolia, 178. 
Allies in North America, 73; Salt Marsh during Reclamation, 
salicifolius, 79; verticillatus, 175. Floral Changes in a, 205. 
Rynchospora alba, 148, 151; capil- Sambucus canadensis, 218;  race- 
lacea, var. leviseta, 204. mosa, 152. 
Santalaceae, 171. — 
Sabatia, 54-56, 129; angularis, 56;  Saponaria officinalis, 35. 
arenicola, 56; Boykinii, 54, 55; Sargent, C. S., Three of Clayton's 
brachiata, 56; calycina, 56; cam- Oaks in the British Museum, 39; 
panulata, 52, 56, 57, var. grandi- 
flora, 52, 56; campestris, 506; 
capitata, 54, 55, 57; carnosa, 56; 
decandra, 56; difformis, 50, 51, 56, 
57; dodecandra, 54-56; Elliottii, 
51, 56; foliosa, 53, 54, 56; gen- 
tianoides, 55, 57; gracilis, 52; Har- 
peri, 53, 54; lanceolata, 50, 51; 
macrophylla, 56; maculata, 56; 
Notes on the Genus, 50; obtu- 
sata, 54, 56, 57; Palmeri, 56; 
paniculata, 51, 56, 8 angustifolia, 
51, a latifolia, 51; Purpusii, 56; 
simulata, 56; stellaris, 56. 
Sabbatia, 55; Boykinii, 54; cam- 
panulata, 52; corymbosa, 50; 
Washington and Michaux, 49. 
Sarracenia purpurea, 65. 
Scheuchzeria, 149; palustris, 148. 
Schizaea, 67; australis, 68; filifolia, 
68; pusilla, 67, 68. 
Scirpus americanus, 147, 213, 221; 
atrocinctus, 151; campestris, var. 
paludosus, 208, 213, 221; debilis, 
63; georgianus, 151; Peckii, 64; 
pedieellatus, 154; robustus, 213, 
221; rubrotinctus, 151, var. con- 
fertus, 151; Smithii, 63; validus, 
150. 
Scleranthus, 203; annuus, 35, 203. 
Scutellaria caroliniana, 132, 133; 
galericulata, 151; integrifolia, 133; 
