1916] 



Index 



255 



INDEX TO VOLUME 18. 



New scientific names are printed in full face type. 



Abies balsamea, 32. 



Achillea Millefolium, 44; occiden ta- 

 lis, 44. 



Acorus Calamus, 30. 



Actaea, 165; alba, 165; rubra, 165, 

 187, forma neglecta, 165. 



Additional Notes on Rhododendron 

 maximum in New Hampshire, 73. 



Adlumia, 215; fungosa, 215. 



Adonis autumnalis, 177. 



Agropyron repens, 34; tenerum, 34. 



Agrostemma, 86 ; Githago, 86. 



Agrostis, 29; alba, 33, var. maritima, 

 33; brevifolia, 233; hyemalis, 33; 

 perennans, 94, 95; stolonifera, 10. 



Aira spicata, 196. 



Alder, White, 39. 



Alnus incana, 36. 



Alopecurus, 197. 



Alyssum, 215; alyssoides, 215. 



Ambrosia artemisiifolia, 44. 



Amelanchier, 49; nantucketense, 48, 

 49; oblongifolia, 38, 48, var. micro- 

 petala, 48; Staminody of the 

 Petals in, 48; stolonifera, 48.^ 



America, Representatives of Trise- 

 tum spicatum in eastern, 195; 

 with a Consideration of the Status 

 of Delphinium Ajacis, Delphinium 

 Consolida in, 169. 



American Plants, Reprint of a rare 

 Book on, 203. 



Ammophila, 29, 93, 94; arenaria, 33, 

 95. 



Amsinckia, 27; barbata, 27; Doug- 

 lasiana, 28; in the northeastern 

 United States, 27; intermedia, 27, 

 28; lycopsoides, 27; spectabilis, 

 27; tessellata, 28. 



Anacardiaceae, 39, 98. 



Anaphalis margaritacea, 44. 



Anchusa, 50; angustifolia, 51; arva- 

 lis, 51; in New England, 50; 

 officinalis, 50, 51, v. angustifolia, 51. 



Andromeda, 100; canescens, 100, 

 101; Common Marsh, 100; glau- 

 cophylla, 100-102, A calciphile Va- 

 riety of, 100, var. iodandra, 102; 



Polifolia, 100, y angustifolia, 102, 

 var. latifolia, 100, 101, /3 media, 

 100; rosmarinifolia, 102. 



Andropogon halepense, 231; scopa- 

 rium, 68. 



Anemone, 165; canadensis, 165 

 cylindrica, 165; nemorosa, 165 

 parviflora, 101; quinquefolia, 165 

 riparia, 165; virginiana, 165- 



Anemonella, 165; thalictroides, 165. 



Angelica pastinaca, 203. 



Anoda triangularis, 143. 



Anomalous Flowers of Pogonia verti- 

 cillata, 252. 



Antennaria alpina, 237, 238, var. 

 cana, 236, 237, var. canescens, 237, 

 from Newfoundland and the Lab- 

 rador Peninsula, Some Allies of, 

 236, var. ungavensis, 238; cana, 

 236, 237; labradorica, 238; Sorn- 

 borgeri, 237. 



Anthemis Cotula, 44. 



Anthoxanthum odoratum, 33. 



Antoiria vulgaris, 82. 



Anychia capillacea, 88. 



Aquifoliaceae, 39. 



Aquilegia, 165; canadensis, 165, var. 

 Phippenii, 166; vulgaris, 166. 



Arabis, 215; canadensis, 215; Drum- 

 mondi, 215; glabra, 216; viridis, 

 216. 



Araceac, 34. 



Aralia, 153; Balfouriana, 153; filici- 

 folia, 153; Guilfoylei, 153; hispida, 

 40; monstrosa, 153; Victoriae, 

 153. 



Araliaceae, 40. 



Arctium minus, 44. 



Arctophila, 2. 



Arctostaphylos Uva-ursi, 71. 



Arenaria, 86; lateriflora, 86; pep- 

 loides, var. robusta, 29, 37, 86, 97; 

 serpyllifolia, 86. 



Argemone, 214; mexicana, 214. 



Arisaema triphyllum, 223, A notable 

 Monstrosity of, 222. 



Armeria, 55, 56; alpina, var. alba, 

 157; Cephalotes, 157, var. alba, 



