INDEX. 
Melanthium monoicum, Walt., 161, 168. 
— muscetoricum, Walt., 148. 
— myoctonum, J. F. Gmel., 148. 
— phalangioides, Lam., 148. 
— polygamum, Desr., 161. 
— racemosum, Michx., 161. 
— racemosum, Walt., 157. 
— sibiricum, Linn., 153. 
— virescens, Willd., 155. 
— virginicum, Linn., 160-161, 165. 
Menispermace:e, distrib., 445. 
Mesopitys, Zalessky, mentioned, 228. 
Mesoxylon, Scott $ Maslen, mentioned, 
228-229. 
Metanarthecium, Maxim., mentioned, 
149. ^ 
Metaxya, Presl, 119, 121. 
Microcalanus pusillus, Sars, 176. 
Miller’s ‘Gard, Dict. the Echia of (La- 
caita), 427-438. 
Mnium, Linn., Quant. descr. of ten British 
species of (MacLeod), 1-58. 
— affine, Bland., 41, 51-56, 57, 58; men- _ 
tioned, 16. 
— cinclidioides, Bly/t, mentioned, 51. 
— cuspidatum, Hedw., 42, 51-56; men- 
tioned, 16, 25. 
— hornum, Linn., 90, 23, 30, 43, 51-56 ; 
mentioned, 13-15, 16. 
— lycopodioides, Schwaey., mentioned, 51. 
— orthorrhynchum, Bruch, Schimp. $ 
Guemb., 18, 25, 44, 51-56; mentioned, 
— punctatum, Hedw., 45, 51-56; men- 
tioned, 6-8, 12, 16. 
— riparium, Mitt., mentioned, 51. 
— rostratum, Schrad., 46, 51-56, 57, 58; 
mentioned, 16. 
— serratum, Schrad., 47, 
tioned, 8-11, 16, 25. 
— spinosum, Schrad., 48, 
tioned, 16, 21. 
— stellare, Reich., mentioned, 51. 
— subglosum, Bruch, Schimp., § Guemb., 
49, 51-56 ; mentioned, 16. 
— undulatum, Linn., 50, 51-56; 
tioned, 5, 16. 
Mohria, Sw., 121. 
Morphology of Calamite Stems (Arber & 
Lawfield), 507-530. 
Mutation hypothesis and Darwinism, 439. 
51-56; men- 
51-56; men- 
men- 
541 
Narthecium, Moehring, 1839-143, 145. 
— alpinum, Michx., 135. 
— americanum, Ker-Gawl., 139, 140, 141. 
— anthericoides, Hoppe, 139. 
— asiaticum, Maxim., 140. 
— boreale, Wahlenb., 135. 
— californicum, Baker, 141, 146. 
— calyculatum, All., 135. 
— glutinosum, Michx., 137. 
— ossifragum var. americanum, A. Gray, 
139, 140. 
— — var. occidentale, A. Gray, 140. 
— palustre, Bub., 159. 
— pubens, Michx., 137. 
— pusillum, Michx., 135. 
— scabrum, Rafin., 137. 
Nephrolepis, Schott, 122. 
Nietnerea, Klotzsch, mentioned, 143. 
— corymbosa, Klotzsch § Schomb., 143. 
Niphobolus, Kau/f., 120. 
Nitzschia delicatissima, Cleve, 177. 
Nyctiphanes norvegica, Sars , 192. 
Oceanorus, Small, 159-160; mentioned; 
183. 
— leimanthoides, Small, 159. 
Odontostomum, Torr., 171-172. 
— Hartwezii, Torr., 171. 
CEnothera gigas, Vries, 168, 
— Lamarckiana, Ser., 168, 
Oithona helgolandica, Claus, 176-202. 
—- similis, Claus, 176. 
Oleandra, Cav., 122. 
Onosma megalospermum, Boiss., 394. 
Ophioglossum, Linn., sunken sporangia, 
mentioned, 115. 
— palmatum, Zinn., 117. 
Ophiostachys virginica, Del., 147. 
Ornithogalum croceum, Ell., 167. 
— croceum, Kunth, 167. 
— divaricatum, Lindl., 170. 
— Nuttallianum, Kunth, 167. 
— texanum, Scheele, 167. 
Osmunda, Linn., 120. 
Oxytria albiflora, Pollard, 167. 
— crocea, Rafin., 167. 
— tevana, Pollard, 167. 
Peesia, A. St. Hil, 121. 
Palestine, a new species of Echium from 
(Lacaita), 366, 
