412 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 



Hyssopus L., 3 species, 1 only Hyssopus, 2 being Lophanthus. 

 (The first was the old Hyssopus.) 



Arctotis L., 11 species, 3 being Arctotis, 4 Ursinia, and 3 now 

 merged into one of Cryptostemma. 



Robinia L., 7 species, 1 only being a Robinia, 3 Carragana, 1 

 each Lonchocarpus, Pongamia, and Sesbania. (Robinia was an old 

 name for False Acacia). 



Arnica L., 7 species, 1 only Arnica, 4 Gerbera, 1 each Senecio 

 and Doronicum. Gerbera now has 39 species, Arnica 25. 



Tussilago L. Tourn., 4 species, only 1 Tussilago and 3 Peiasites. 



Calendula L., 8 species, 3 Calendula, but 5 Dimorphotheca. 



Cynanchum L., 5 species, 1 Cynanchum, 2 Gonolobus, 1 Mars- 

 denia. (Now there are 100 species of Gonolobus and about 60 

 Cynanchum.) 



Cynosurus L., 11 species, 2 only Cynosurus, 3 Eleusine, and 6 

 different genera 1 species each. 



Cerbera L., 3 species, only 1 Cerbera and 2 Thevetia. 



Galega L. Tourn., 8 species, only 1 Galega, 7 being Tephrosia. 

 (Galega now only has about 6 species, Tephrosia over 200.) 



Xeranthemum L., 12 species, 1 only Xeranthemum, 4 Helichry- 

 sum, 3 Helipterum, but there are two sections. The first, with two 

 species, contains Xeranthemum annuum. 



Conyza L., 19 species, 2 only being Conyza, 3 Inula, 2 Serico- 

 carpus, 2 Pluchea, 3 Blumea, 4 Veronia ; Phagnalon, Pterocaulon, and 

 Neurolaena 1 each. 



Baccharis L., 7 species, 1 only Baccharis, 3 Pluchea. 



Satyrium L., 8 species, 3 of which are Habenaria, 1 each 

 Himantoglossum or Orchis, Epipogon, Spiranthes, Goodyera, Eulephia. 



Laurus, 12 species, 1 only Laurus, 3 Cinnamomum, 3 Persea, 2 

 Binder a, 1 each Ceanothus, Canella, and Sassafras. 



Amaryllis L., 11 species, 1 only Amaryllis, 2 Buphane, 2 

 Crinum ; the 7 other species belong to 7 different genera. 



Rhizopophora L., 6 species, 3 Brugniera, 1 Kandelia, 1 

 jEgiceras, and 1 Sonneratia. 



Gesneria L., 3 species, 2 Pentaraphia, 1 Rhytidophyllum. 



Epidendrum L., 30 species in 3 sections, is an olla podrida. 3 

 species are Epidendron, 3 Cymbidium, 3 Dendrobium, 3 Oncidium, 2 

 Vanilla, 2 Vanda, 2 Brassavola; the others belong to 12 different 

 genera. 



