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BOTANY THE LIVERWORTS {Hepatic^) When we consider the elegance of form, variety of hue, and curious structure of many of the Hepatics, classified by the botanists of the last century with the mosses to which they are nearly allied, one wonders at first why they have not been more studied. The chief reason perhaps is the difficulty of finding them in fruit, a circumstance which I have frequently experienced. They occur chiefly on damp soil, in bogs or on old trunks of trees. Hence those who knew best our Sussex forests have given them most attention. This group comprises Marchantia, Junger- mannia, Riccia and Anthoceros, all of which are represented in Sussex. In this county they have been most fully examined by the Rev. E. N, Bloomfield, of Guestling, whose list with a few additions I here subjoin. The list is arranged according to Dr. Cooke's Handbook of the British Hepaticce, 1894. JUNGERMANNIACEiE Jungermannia ventricosa, Dick. Fairlight Frullania dilata, L. Eastbourne — capitata, Hook. Guestling — tamarisci, Mich. Pett — bicuspidata, L. „ Lejeunia minutissima, Sm. St. Leonards — '"cisa, Schrd. Bexhi/I — serpyllifolia, Mich. Guestling Nardia adusta, N. Carr. Blackdown Radula complanata, L. „ — Funckii, W. & M. Carr. Tilgate Porella platyphylla, L. Winchelsea Fossombronia pusilla, Nees. Guestling Lepidozia reptans, L. Guestling Pe^'a calycina, Tayl. „ — setacea, Mitt. Bexhill Harpanthus scutatus, Spruce. Tunhridge Cephalozia divaricata, Sm. Guestling Wells — connivens, Dick. Bexhill Pallavicinia Lyellii, Lindb. Chiltington ^hi,SX^;t.«htfl'. E..,..r.. MARCHANTIACE^ Trichocolea tomentella, Ehr. Dallington Rebouha hemispherica, Raddi. Rusthall Plagiochila asplenoides, N. & M. Eastbourne Dumortiera hirsuta, Sw. Guestling — decipiens, Mitt. Polegate Dir-r'T a r't- zi? Scapania undulata, Ditt. Fairlight RICCIACE^ — resupinata, Dumort. Eridge Riccia glauca, L. Guestling — irrigna, Nees. Guestling Ricciella fluitans, L. „ — curta, Dum. Ardingly Plagiochila asplenioides, L. Guestling ANTHOCERATACE^ Aplozia sphaerocarpa, Hook. Eastbourne Anthoceros lasvis, Dill. Guestling Jungermannia crenulata, Sm. Dallington — punctatus, L. „ FRESHWATER ALG^E Although considerable attention has been paid to the Sussex fresh- water algae in several of the districts, the county with respect to them has been by no means thoroughly explored. In his Flora of Tiinbridge Wells and the Surrounding Country., Mr. E. Jenner has given a list of those which occur in the Medway district, with their localities, and as these include Ashdown Forest, Waterdown Forest and the commons, bogs, streams and ponds therein, it is very useful for reference. Zygnema Hasseli and Z. Jenneri are first recorded from this county, the latter at Mark Cross. In his Flora of Hastings, the Rev, E. N. Bloomfield published a list of those in the East Rother district, which includes divers 61