240 



INDEX. 



Page. 



Aiiacharis 119, 186 



Anagallis 96, 172 



Analyzing flowers 210 



Andrsea 140, 201 



Anuromeda 95, 171 



Mariana 49 



polifolia 12 



Andropogon 136, 199 



scoparius 50 



Virginicua 50 



Anemone 01, 14S 



Hepatica 27, 28 



nemorosa 31 



Aneura 143, 206 



Annuals, How to collect 215 



Anomodon 142, 204 



Auonaceas 63 



Antennaria 89, 167 



jjlantaginifolia 29, 49 



Anthemis 53,91,169 



Anthoceros 143, 205 



Anthoxanthum 134, 198 



odoratum 50 



Anychia 69,153 



dichotoma 20 



Aphyllon 103, 176 



Apios 76, 157 



Aplectrum 120, 187 



hyemale 50 



ApocynaceiB 97 



Apocynum 97, 172 



androsaemifolium 12 



Appearance of new plants since 1830 16 



Appendix 209 



Apple of Peru 101 



Appliances for analyzing flowers 211 



Apricot 76 



April, Plants flowering during the first week 



of 29 



Plants flowering during the second 



and third weeks of 30 



Aquilegia .62,149 



Arabis 65,150 



dentata 22,29 



hirsuta 16, 23 



liBvigata 16,29 



lyrata 30 



patens 23,31 



stricta 12,16 



Aracete 117 



Aralia 83,162 



hispida 12 



quinqnefolia 12 



spinosa 20 



Araliace.'c 83 



Arbutus 95 



Archangelica 82,162 



Archemora 51, 83, 162 



Arctium 53, 92 



Arctostaphylos Uva-ursi 12 



Arenaria 69,153 



Arothusa bulbosa 13 



Argemone Moxicana 12 



Arisreraa 117, 185 



triphyllum 30,50 



Page. 



Aristida 131,195 



Aristolochia 109, 181 



Aristolochiaceoe 109 



Arlington Estate 24 



Arnica 92,169 



Arrow Aium 117 



Arrow-head 118 



Arrow-leaved Tear-Thumb 108 



Violet 67 



Airow-wood 84 



abundant species of 49 



Arum 117 



Family 117 



Arundinaria macrosperraa 13 



Asaiabacca 1 09 



Asarum 109, 181 



Virginicum 13 



AsclepiadaceiB 51,97 



Asclepiadeaj 51 



Asclepias 97,172 



Cornuti 49 



phy tolaccoides 12 



(juadrifolia 24 



rubra 25 



tomentosa 12 



Ascy ram 09, 153 



s; ans 26 



Ash 97 



Asimina 63, 149 



triloba 29 



Asparagus 122, 188 



Aspen 116 



Asphodel 123 



Aspidium 138,200 



acrostichoides 50 



margLnale 50 



Asplenium 138, 200 



angustifolium 24 



ebeneum 50 



Filix-fcemina 50 



Aster 53, 88, 166 



iBstivus 25 



divaricatua 12 



ericoides 49 



miser 49 



patens 49 



simplex 49 



Astragalus 74, 156 



Atlas of Fifteen Miles around Washington, 



used in naming localities 18 



Atrichum 141,203 



Atriplex 107, 180 



Aulacomnium 141, 203 



Autumn Sneeze-weed 91 



Autumnal flowering of plants 32 



Cause of 33 



Avcns 77 



A zalea 9o 



Azalea 95 



Baccharis 89, 167 



Back Lick Kun 24 



Baker, Dr. Frank, Discovery by, of Campto- 

 sorus rhizophyllus 138 



