A REVISION 
OF THE GENUS ANGRAECOPSIS 
BY 
V. S. SUMMERHAYES 
(Royal Botanic Gardens, Kew) 
THE GENUS Angraecopsis was first proposed by Kraenz- 
lin* in 1900 for a plant from Usambara in Tanganyika 
Territory, namely A. tenerrima Kraenzl. The author 
pointed out most of the distinctive characters of the 
genus, particularly the unequal sepals and the adnation 
of the laterals to the anticous part of the petals, though 
he seemed a little confused over the morphological status 
of the parts concerned. He also stated that there is a 
single viscidium, but this is clearly the result of faulty 
observation. Afterwards he appears to have rejected his 
own genus since he redescribed A. tenerrima in 1914 as 
a species of Angraecum. 
In his comprehensive account of the Orchidaceae in 
**Die Orchideen’’ published in 1914, Schlechter’ recog- 
nises the genus and adds three species to the original 
A. tenerrima. These were A. parviflora (Thou. ) Schltr. 
from the Mascarene Islands, A. ischnopus (Schltr. ) 
Schltr. from West Africa and A. falcata (Thunb. ) Schltr. 
from Japan. He says little about the characters of the 
genus except to point out that the three-lobed lip sepa- 
rates it easily from Aérangis Rehb. f. 
A few years later he gives a more complete treatment 
of the genus in his general revision of the Angraecoid 
Orchids*. In this the number of species has risen to seven, 
‘Engl. Bot. Jahrb. 28 (1900) 171. 
? Die Orchideen (1914) 600-601. 
® Beih. Bot. Centralbl. 36, Abt. 2 (1918) 139-141. 
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