Floristik und Systematik der Phanerogamen. 555 



Suburbanus Calcu tt eusis", commenced by Voigt and carried on 

 by Griff ith and Mack and uitimately published in 1845. The district 

 studied in the present paper, includes the Western Sundribuns, 

 where there are typical mangrove-swamps; tlie most westerly sub-division 

 (Goghat) of the Hughli district lies outside the limits of the deitaic 

 ailuvium, on vvhich Calcutta is built, so that its flora is one characte- 

 ristic of drier districts. — The second section of the paper (p. 149—168) 

 is devoted to a discussion of the topography and vegetations of the 

 district. Practically the whole area is a level piain; the Hughli- 

 Howrah district (except for the Goghat sub-division) belongs lo the 

 rice-swamp of Central Bengal and the same is true of a conside- 

 rable portion of the 24-Pergunnahs (except the Sand r ibun-portion). 

 The banks of the main streams and artificial patches constitute the only 

 higher ground. The greater portion of the area is under cultivation and 

 there is no genuine forest except a certain amount of jungle in the N. E. 

 Corner of Hughli. — In the Goghat sub-division the number of species 

 of grasses, not found on the mud of the delta, is very noticeable. — The 

 Western Sundribuns is covered throughout with a rather low forest, 

 here and there interrupted by patches of low grasses; towards the sea- 

 face we have considerable Stretches of muddy shore with a number of 

 mangroves and patches of salt-woods; in other places we have sand- 

 hills with a true dune Vegetation. The Su n d rib u n - portion of the area 

 includes a considerable number of species^ occurring there only. — In 

 the Vegetation of the main area four distinct groups of species occur: 

 a) Species, common to the Gange tic delta north of Sundribuns and 

 to the Sundribuns; these have either been left behind, as the district 

 became altered from its former swamp forest State or have invaded the 

 area from the Sundribuns (e. g. ///6/sc«s tiliaceiis, Thespesia popiilnea, 

 etc.) or have invaded the Sundribuns from the north (e. g. NaraveUa 

 zeylanica, Crataeva rellgiosa, etc.). — b) Species, common to the Gan- 

 getic delta and Western Bengal, but not going into the Sundri- 

 buns; a large number of plants belongs here^ such as Raniinciilus 

 sceleratns, Coccaliis villosus, Tinospora tomentosa, etc. — c) Species, 

 wanting in the S un d r ib un forests and inWesternßengal^ or beyond 

 are small in number (e. g. Brassica agrestis, Rhynchcsia bracteata, etc.) ; 

 the only aquatic species, which do not extend westwards, are Eiiryale 

 ferox and Chamaeraphis spinescens. — d) Cuitivated or manifestly intro- 

 duced plants; some of these are staple crops about 120 species (e, g. 

 species o\ Brassica, Linum usitatissimum, etc.); others (260 species) have 

 been purposely introduced ior various reasons from diverse regions (e. g. 

 SoutheastAsia, China, and Japan, Africa, etc.) and finally there are 

 a considerable number of inadvertently introduced plants (21 species, e. g. 

 Argemone mexicana, Senebiera pinnatifida, etc.), one-tenth beingMedi- 

 terranean, one-tenth Indo-Chinese and four-fifths American. — 

 The list of species, which follows, includes 1316 Phanerogams (670 genera 

 in 120 Orders) and 175 Cryptogams (92 genera in 37 Orders), Fungi being 

 excluded from the list; the Algae and Lichens are probably very ina- 

 dequately represented. F. E. Fritsch. 



Thiselton-Dyer, Sir W. J., Hook er 's Icones Plantar um 



or, Figures, with descriptive characters and re- 



marks, of new and rare plants, selected from tiie 



Kew Herbarium. Vol. VIII. 4. series. Part IV. January 



1905. Plates 2776—2800. Price 4 Shillings. 



The following new plants are figured and described: 



Plate 2777: Erichsenia uncinata Hemsl. nov. gen. et spec. (inter 

 Viminanam et Dairesiam sed stipulis, calycis forma, aestivatione, etc. 

 diifert, Plate 2778: Phyllota Georgii Hemsl. nov. spec. (ex affinitate P. 

 Luehmanni F. Muell., a qua foliis dimidio minoribus apice inermis differt), 

 Plate 2780: Micromyrtus Erichsenii Hemsl. nov. spec. {M. Drummondii 



