280 
interruptus, 171; lateralis, 169, 171; 
lucens, 169, var. connecticutensis, 
170; mysticus, 169; natans, 169; 
X nitens, 169; Nuttalii, 170, var. 
cayugensis, 170; Oakesianus, 169; 
obtusifolius, 169, 171; pectinatus, 
169, 171; pennsylvanicus, 170; per- 
foliatus, 47, 169, 170; polygonifolius, 
171; praelongus, 169; pulcher, 140, 
100, 171; pusilus; 109. 171, var. 
polyphyllus, 169, 171, var. Sturrockii, 
169, 171, var. tenuissimus, 169; 
Richardsonii, 169, 170; Robbinsii, 
169; rutilus, 169, 171; X spathae- 
formis, 169; strictifolius, 169; Tuck- 
ormani, 170;  Vaseyi, 169, 171; 
zosterifolius, 169. 
Potentilla, 17, 195; fragarioides, 16; 
labradorica, 50; monspeliensis, 50, 
var. labradorica, 50; palustris, 141; 
tridentata, 16, 17. 
Preliminary Lists of New England 
Plants,—— XV. Addenda, 36, XIX, 
Addenda, 71, XXI. Cyperaceae, 
135, XXII, 168. 
Prenanthes altissima, var 
mea, 95. 
Pringsheimia, 157; scutata, 157. 
Protococcus ovalis, 155. 
Psedera, 24-26; heptaphylla, 28; hir- 
suta, 26; laciniata, 28; New Eng- 
land Species of, 24; quinquefolia, 25, 
28, var. hirsuta, 26, 28, var. minor, 
27, var. murorum, 27, var. Saint- 
Paulii, 27; texana, 29; tricuspidata, 
cinnamo- 
29;  vitacea, 27-29, var. dubia, 
28, forma macrophylla, 28, var. 
laciniata, 28. 
Pseudohedera, 24. 
Psilocarya nitens, 142; scirpoides, 137, 
142. 
Ptelea trifoliata, 151. 
Ptilidium puleherrimum, 192. 
Ptilota pectinata, 116. 
Puccinellia Borreri, 65. 
Pucciniastrum, 15-17; arcticum, 13, 
15, 16, 218, var. americanum, 16; Po- 
tentillae, 16. 
Pyenanthemum, 86; incanum, 165; 
lanceolatum, 154, 165; linifolium, 
164; muticum, 165; pycnanthe- 
moides, 86; Tullia, 86. 
Pylaiella littoralis, 116. 
Pyrola secunda, 20, var. obtusata, 145. 
Pyrus, 195; arbutifolia, var. atropur- 
purea, 33. 
Quahog, 44, 45. 
Rhodora 
[DECEMBER 
Quamassia esculenta, 31; hyacinthina 
31. 
Quebec, Draba aurea in Rimouski 
County, 148; Lemna minor and 
Sparganium eurycarpum іп Rim- 
ouski County, 95. 
Quercus ambigua, 49; borealis, 49; 
coccinea, 49, var. ambigua, 49; 
rubra, 49, var. ambigua, 49. 
Quinaria, 25; hederacea, 25; hirsuta, 
26; quinquefolia, 27. 
Radicula, 32; aquatica, 32; Armora- 
cia, 32; obtusa, var. sphaerocarpa, 
32, 218; palustris, var. hispida, 32. 
Ralfsia, 156, 157, 161, 164; Borneti, 
156; verrucosa, 161. 
Rand, E. L., Additions to the Plants of 
Mount Desert Island, 145. 
Ranunculus aquatilis, var. trichophyl- 
lus, 166; Cymbalaria, 20; laxicaulis, 
143; sceleratus, 150. 
Red Oak, 165. 
Rehder, А., The New England Species 
of Psedéra, 24. 
Reports on the Flora of the Boston 
District,— II, 59, III, 128. 
Representatives of Rumex salicifolius 
in eastern America, 17. 
Reseda lutea, 112. 
Reynolds, E. S., Scirpus hudsonianus 
in Rhode Island, 20. 
Rhabdonia tenera, 43. 
Rhexia, 166; virginica, 140. 
Rhinanthus stenophyllus, 201. 
Rhizoclonium riparium, 160. 
Rhode Island, Scirpus hudsonianus 
in, 20; Some Plants of Tiverton, 112. 
Rhodomela floccosa, 115;  lycopo- 
dioides, forma flagellaris, 116, forma 
tenuissima, 116. 
Rhodymenia palmata, 116. 
Rhodophyceae, 116. 
Rhus canadensis, var. illinoensis, 52; 
glabra, forma laciniata, 35; var 
laciniata, 35. 
Rhynchospora. See Rynchospora. 
Ribes lacustre, 205; new to Massachu- 
setts, 205; prostratum, 205; triste, 
205, var. albinervium, 205. 
Riccardia pinguis, 37, 192. 
Ricciella fluitans, 192; Sullivantii, 192. 
Rich, W. P., City Botanizing, 149. 
Rimouski County, Quebec, Draba 
aurea in, 148; Lemna minor and 
Sparganium eurycarpum in, 95. 
Robinson, B. L., Further Notes on the 
vascular Plants of the northeastern 
