PREFACE vii 
plants from South-Western Africa we are indebted to Mr. 
Curt Dinter, Government Botanist in Okahandja. 
From Delagoa Bay seeds have been sent by the Bishop 
of Lebombo; from German East Africa by Dr. Brunn- 
thaler of Vienna, Prof. Dr. A. Engler of Dahlem, and by 
Prof. Dr. Stuhlmann of Amani. For plants and seeds from 
British East Africa we are indebted to Mr. Dawe and Mr. 
Brown of the Botanic Garden in Entebbe, and to Mr. 
Hutchins of Nairobi, Chief Conservator of Forests in 
British East Africa; for plants from Hritrea and Abyssinia 
to Prof. J. Baldrati of Asmara, to Prof. Penzig of Genoa, 
Prof. Georg Schweinfurth of Berlin, and to Cay. C. Sprenger 
of Naples (now of Corfu); for plants from Egypt and 
Southern Arabia to Prof. Georg Schweinfurth. 
Plants from the Canary Islands we owe to the kindness 
of the late Mr. Morris of Ivybridge, to Lord Walsingham 
and to Dr. Perez of Orotava. 
Western and Southern Mediterranean plants were con- 
tributed by Miss Willmott, Mr. C. Bicknell of Bordighera 
and M. Henri Correvon of Geneva. 
Those of the Hastern Mediterranean were procured 
through Mr. Hartmann, chiefly from the Island of Cyprus 
and Syria; for Istrian and Dalmatian plants we are indebted 
to Prof. De Marchesetti of Trieste. 
Plants and seeds have also been kindly sent from 
Mauritius by Bishop Gregory and Dr. Konig; from the 
Island of Sokotra by Prof. Balfour of Edinburgh and Prof. 
von Wettstein of Vienna. 
For Indian plants we owe our thanks to the late Sir 
Dietrich Brandis and the late Sir George King, also to the 
Directors of the Botanic Gardens at Calcutta, Lal Bagh, 
and Peradenya; for Chinese plants to the Director of the 
Botanic Garden in Hong Kong, to M. Puteaux in Versailles, 
Cay. Sprenger, Prof. Sargent, Mr. Wilson, and others. 
For Californian plants we are indebted to Mrs. Brandegee, 
Prof. C. F. Baker of Claremont, and Dr. F. Franceschi of 
Santa Barbara; for Mexican plants to Prof. N. L. Britton 
of New York, Prof. Conzatti of Oaxaca, Mr. C. A. Purpus of 
Flagstaff, Dr. J. N. Rose of Washington, Dr. H. Ross of 
Munich, Prof. Wm. Trelease of St. Louis, to the late Dr. 
Weber of Paris, and others; for plants from Costa Rica to 
Mr. Charles Werklé of San José ; for West Indian plants to 
Prof. C. F. Baker of Cuba (now of Claremont, Cal.), to Mr. 
Fawcett late of Jamaica, and to Messrs. Knight of London ; 
for Chilian plants to Mr. Ed. Framm of Hamburg and to 
