— i6 — 



It is hoped that more members interested in the Hepaticae will contribute. 

 We have a fine lot of duplicates to distribute to students in exchange for lo- 

 cality specimens. The Herbarium is of value not so much for its rare speci- 

 mens, but for the representation of the species found in each locality. We 

 wish members to bear this in mind and make contributions fully covering their 

 collecting areas. 



May I again appeal to the members to contribute if possible the following 

 specimens, which are not represented in this herbarium. These are given in 

 the Society Exchange List and are needed for type study: Riccia albida, R. 

 Beyrichiana, R. calif ornica, R. CampbeUiana, R. catalinae, R. hirta, R. McAlUs- 

 teri, Peltolepis grandis, Plagiockasma rupestre, P. Wrighti, Grimaldia californica, 

 Neesiella rupestris, Aster ella violacea, A. echinella, Marchantia domingensis, M. 

 paleacea, Sphaerocarpos cristatus, Geothallus tuberosus, Riella americana, Metz- 

 geria angusta, M. uncigera, Fossombronia lamellata, Scalia Hookeri, Marsupella 

 arctica, M. Bolanderi, M. condensata, M. groenlandica, Nardia biformis, N. 

 Lescurii, Prasanthus suecicus, Jungermannia Bolanderi, J. danicola, J. Rauana, 

 Lophozia elongata, L. harpanthoides, L. Jenseni, L. murmanica, L. Vahliana, 

 Mesoptychia Sahlbergii, Anastrepta orcadensis, Sphenolobus groenlandicus, Plagi- 

 ochila alaskana, P. arctica, P. Fryei, P. virginica, Clasmatocolea exigua, Lopho- 

 colea Leiboldii, Chiloscyphus Webberianus , Cephalozia ambigua, Cephalozilla 

 arctica, C. biloba, C. Bryhnii, C. elegans, C. floridae, C. grimsulana, C. ludoviciana 

 C. obliqua, Odontoschisma Gibbsiae, 0. Macounii, Calypogeia acuta, Pleuroclada 

 albescens, Herberta tenuis, Diplophyllum argenleum, D. imbricatum, D. incurvum, 

 Scapania americana, S. convexula, S. cordifolia, S. dentata, S. Evansii, S. heier- 

 ophylla, S. Kaurini, S. spitzbergensis, Radula arctica, R. flaccida, R. Hallii, R. 

 Lescurii, R. polyclada, Porella Swartziana, P. wataugensis, Cololejeunea diaphana, 

 C. Macounii, C. subcristata, C. tuberculata, Aphanolejeunea sicaefolia, Lejeunea 

 floridana, Microlejeunea Cardoti, M. Ruthii, Reciolejeunea Berteroana, Taxile- 

 jeunea erosifolia, Ceratolejeunea cubensis, Drepanolejeunea bidens, Frullania 

 arietina, F. chilcootiensis , F. cucullata, F. gibbosa, F. mexicana, F. saxicola, F. 

 Wrightii, Notothylas Breutelii, Anthoceros Donnellii, A. Hallii, A. phymatodes, 

 A. Ravenelii. 



Geo. H. Conklin, Curator 



EXCHANGE DEPARTMENT 



Offerings — To Society members only. Return postage rather than a stamped 

 envelope should be sent. 



Miss Daisy Levy, 403 West 115th Street, New York City. — Amblystegium 

 orthocladon (Beauv.) Kindb., collected at Harper's Ferry, W. Va., July, 1919. 



