A pilot workshop on Bryophytes at the National Herbarium (TAN) reveals the presence of seven additional species for Madagascar Author Reeb, Catherine Institut de Systématique Evolution Biodiversité, Sorbonne Université, Muséum National d’Histoire Naturelle, CNRS, EPHE, 57 rue Cuvier 75005 Paris, France. catherine.reeb@mnhn.fr Author Letsara, Rokiman Parc Botanique et Zoologique de Tsimbazaza, Antananarivo 101, Madagascar. Author Andriamiarisoa, Roger Lala Missouri Botanical Garden, Lot vp 31, Ankadibevava Anjohy, Antananarivo, Madagascar. Author Brinda, John C. Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, MO- 63110, USA. Author Abalo-Loko, Goudjo-Ameto Université de Lomé, Faculté des Sciences, département de Botanique, Laboratoire de Botanique et Ecologie Végétale, BP 1515, Lomé-Togo. Author Boucheron-Dubuisson, Elodie Institut de Systématique Evolution Biodiversité, Sorbonne Université, Muséum National d’Histoire Naturelle, CNRS, EPHE, 57 rue Cuvier 75005 Paris, France. Author Fischer, Eberhard Universität Koblenz – Landau, Institut für Integrierte Naturwissenschaften, Abteilung Biologie, Universitätsstrasse 156070 Koblenz, Germany. Author Hodgetts, Nicholas G. Botanical services Cuillin Views, 15 Earslish, Portree; Isle of Skye, IV 51 9 XL, UK. Author Lavocat-Bernard, Elisabeth Lotissement Moreau, 97128 Goyave, Guadeloupe. Author Naniarimino, Fara Parc Botanique et Zoologique de Tsimbazaza, Antananarivo 101, Madagascar. Author Phillipson, Peter B. Institut de Systématique Evolution Biodiversité, Sorbonne Université, Muséum National d’Histoire Naturelle, CNRS, EPHE, 57 rue Cuvier 75005 Paris, France and Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, MO- 63110, USA. Author Sass-Gyarmati, Andrea Eszterházy Károly University, Department of Botany, Eger Postal Box 43, H- 3301, Hungary. Author Vanderpoorten, Alain University of Liège, Institute of Botany. B 22, Sart Tilman bd, 4000 Liège, Belgium. text Candollea 2019 2019-10-07 74 2 153 158 journal article 20384 10.15553/c2019v742a5 2e0c17b6-0efb-405b-a876-0156ce9fd99c 2235-3658 5724708 Pseudocrossidium porphyreoneurum (Müll. Hal.) R.H. Zander in Bull. Buffalo Soc. Nat. Sci. 32: 119. 1993 . ( Pottiaceae ) Notes – Pseudocrossidium porphyreoneurum is relatively widespread in dry regions of sub-Saharan Africa ( Botswana , Djibouti , Eritrea , Kenya , Malawi , Mozambique , Namibia , South Africa , Tanzania , Uganda , Zambia , Zimbabwe ) and its occurrence in the semi-arid region of Madagascar is therefore not unexpected. There are many other species from similar habitats in continental Africa that might reasonably be expected to occur in Madagascar but have not yet been recorded. This may be the result of a collecting bias of bryologists towards humid forests but also because these areas are often less accessible. Furthermore, the species is generally represented by small and inconspicuous individuals. Specimen examined. – MADAGASCAR . Reg. Atsimo-Andrefana [Prov. Toliara] : Betioky-Atsimo ; Beza Mahafaly Reserve , Parcelle No. 2, rocky hills near Betioky , 23°41'S 44°36'E , 150 m , 20.V.1987 , Phillipson 1832 ( MO- 6491266 , TAN ).