1918] 
obtusifolium, 71-73, var. Helleri, 
72, 73; polycephalum, 71-73, var. 
Helleri, 72, 73. 
Graderia, 136. 
Grass, Eel, 108; Tape, 108. 
Grasses of Illinois, A Manual of the, 
188; Some Rhode Island, 116. 
Gratiola, 65; neglecta, 65, 66, 73; 
officinalis, 66, @. carolinensis, 66; 
sphaerocarpa, 65, 73; trifida, 65; 
virginiana, 65, 73; virginica, 65. 
Grypocarpa, 120. 
Gunnera, 148. 
Haplosiphon hibernicus, 142; pumi- 
lus, 142. 
Helenium nudiflorum, 98. 
Helianthemum canadense, 49, 50; 
georgianum, 50; majus, 49, 50, 73; 
propinquum, 50, 73. 
Helichrysum, 71. 
Hemlock, 186; Spruce, 187. 
Hepatica acutiloba, 183, 194, 195; 
americana, 183, 193, 194. 
Herbarium, Notes on the Clayton, 
21, 48, 65. 
Heuchera americana, 196. 
History of the American Record of 
Scirpus mucronatus, 41. 
Hitchcock, A. S., A Manual of the 
Grasses of Illinois, 188. 
Homocanthus, 150. 
Hosackia, 168; americana, 168. 
Howe, R. H., Jr., A further Note on 
the Lichens of Nantucket, 40. 
Hudsonia tomentosa, 102, 106. 
Hybrid, A Salix rostrata, 132. 
Hydrangea arborescens, 15. 
Hydrastis canadensis, 183, 196. 
Illinois, A Manual of the Grasses of, 
188. 
Intergeneric Hybrid in the Cypera- 
ceae, 189. 
Ipomoea pandurata, 65, var. rubes- 
cens, 65. 
Josselyn Botanical Society of Maine, 
Juncus alpinus, var. insignis, 103; 
alpinus, var. insignis X brevi- 
caudatus, 103;  brevicaudatus, 
103; dichotomus, 97; effusus, var. 
compactus, 103, var. Pylaei, 103, 
var. solutus, 103. 
Kalmia angustifolia, 106. 
Kneiffia, 52. 
Index 
215 
Knowlton, C. H., A new botanical 
Textbook for High Schools, 100; 
Plants from South Weymouth, 
Massachusetts, 115; Preliminary 
Lists of New England Plants,— 
XXVI. 182; Report of Committee 
on local Areas, 181, 193; Reports 
on the Flora of the Boston Dis- 
trict,— XXVI. 15, XXVII. 55, 
XXVIII. 164, XXIX. 208. 
Labiatiflorae, 151. 
Lactuca Scariola, 180, 
integrata, 180, 181. 
Lamourouxia serratifolia, 66. 
Lapsana communis, 98. 
Lathyrus, 168, 204; Aphaca, 168; 
maritimus, 168, var. glaber, 168; 
palustris, var. pilosus, 168; pra- 
tensis, 168, 204; sativus, 169. 
Laurus, 99; albida, 99; Sassafras, 98, 
99; variifolia, 98. 
Lecanora varia, 40. 
Lechea, 50; intermedia, 102, 106; 
Leggettii, 97; major, 49, 50; 
minor, 106; villosa, 50. 
Leguminosae, 165. 
Lemna, 143. 
Lespedeza, 169; Brittonii, 169; capi- 
tata, 169, var. stenophylla, 169, 
var. velutina, 169; frutescens, 169; 
hirta, 169; Nuttallii, 169; pro- 
cumbens, 169; Stuvei, 169; vio- 
lacea, 169; virginica, 169. 
Lettuce, Prickly, 180. 
Leucothoé racemosa, 115. 
Lichens of Nantucket, A further Note 
on the, 40. 
Ligulaeflorae, 151. 
Limonium trichogonum, 106. 
Limosella, 162; aquatica, 160-163, 
var. tenuifolia, 160, 161, 164; 
maritima, 162, 164; subulata, 162- 
164, The specific Validity of, 160; 
tenuifolia, 160, 162, 164. 
Linaria minor, 107. 
Lindera triloba, 99; umbellata, 99. 
Liquedambar Styraciflua, 196. 
Lists of New England Plants, Pre- 
liminary,— XXVI. 182. 
Littorella americana, 62; North 
American, 61; uniflora, 61, 62. 
Long, B., Eragrostis peregrina a 
frequent Plant about Philadelphia, 
173; History of the American 
Record of Scirpus mucronatus, 41. 
Lophotocarpus spongiosus, 102. 
Lotus, 169; corniculatus, 169. 
Si, var: 
