Sm. from which it is distinguished by the larger leaves, 
by the different form of the basal part of the lip, by the 
dorsal sepal being smaller than the lateral sepals (not vice 
versa), as well as by less prominent details of the flowers 
and vegetative parts. 
Chitonanthera tenuis (J. J. Sm.) L. O. Williams 
comb. nov. 
Vonrémeria tenuis J. J. Smith in Bull. Dép. Agric. 
Ind. néerl. No. 89 (1910) 22; in Nova Guinea 8, pt. 
3 (1912) 598, t. 108B; in Nova Guinea 12, pt. 1 (1913) 
96. 
Octarrhena tenuis J.J. Smith in Fedde Repert. 12 
(1913) 25; in Nova Guinea 14, pt. 3 (1929) 487. 
NETHERLANDS New Guinea: epiphyte in a low thicket, Lake Hab- 
bema, alt. 3225 m., August 1938, Brass 9273; massed on logs in forest 
opening, 9 km. NE. of Lake Habbema, alt. 2800 m., October 1938, 
Brass 10790 and 10884; at the foot of Doorman-top, alt. 2250 m., 
October 17, 1920, Lam 1609. 
British New Guinea: common on forest trees, Murray Pass, Whar- 
ton Range, Central Division, alt. 2840 m., June-September 1933, 
Brass 4509. 
Dissections and study of the several collections of this 
species which are available seem to indicate that it should 
be referred to Chitonanthera rather than to Octarrhena. 
If the present specimens were to be referred to Octar- 
rhena, probably the entire genus Chitonanthera should 
be placed there. This course does not seem justified at 
the present time. 
Smith describes and illustrates the lateral sepals of this 
species as being connate nearly to their apices. This is 
not the case, for several dissections show that they are 
merely overlapping and coherent above. The sepals are 
connate at the base as in other species of the genus. The 
column is described and illustrated as having a column- 
foot. However, if present, the column-foot is very ob- 
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