Listrostachys fimbriata Rolfe in Bull. Mise. Inform. 
Kew (1906) 115. 
Angraecum Muanse Kraenzlin in Orchis 2 (1908) 99. 
Diaphananthe falcata Schlechter in Beih. Bot. Cen- 
tralbl. 36, Abt. 2 (1918) 100. 
Diaphananthe fimbriata Schlechter l.c. 
Diaphananthe Kirku Schlechter |.c. 101. 
Diaphananthe Muansae Schlechter l.c. 
I fail to see any differences between the above species 
on comparison of the descriptions and 80 gatherings in- 
cluding type specimens, although there is certainly some 
variation in flower size and particularly in lip structure. 
The lip varies in the degree of laceration or fimbriation 
of the margins and in the length of the apiculus although 
this is usually at least one quarter of the length of the 
rest of the lip and sometimes as much as two-thirds. ‘The 
spur is variously thickened in the distal part, acute or 
obtuse, and either shorter or longer than the lip. So far 
I have been unable to correlate the variations in any of 
the above characters, while in general facies, including 
habit, inflorescence, shape of tepals, general lip construc- 
tion and column structure all the specimens exhibit a 
remarkable uniformity. 
Judging from the material available and the notes of 
collectors the stem is upright at first while still short and 
the leaves are then recurved downwards and may almost 
meet below. As the stem elongates the root system is 
not strong enough to hold it up and it gradually falls 
over, the leaves produced subsequently then becoming 
more and more hanging and consequently straighter. 
D. Welwitschu (Reichb.f.) Schltr. which is, so far as 
I am aware, only known from the type gathering, has 
elongated upright stems with short closely imbricate al- 
most erect leaves which are rounded and unequally bi- 
lobed at the apex. The inflorescences and flowers closely 
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