ORCHID STUDIES. I. 
BY 
Louis O. WILLIAMS 
Arachnis longicaulis (Sch/tr.) L. O. Williams 
comb. nov. 
Vandopsis longicaulis Schlechter in Fedde Repert. 
Beihefte 1 (1914) 973. 
Arachnis Lyonu Ames Orch. 5 (1915) 221. 
Specimens examined: 
PuiippIne Istanps, Luzon, Province of Rizal. September 1909. 
Loher 14583 and 14680, Growing in rocks; Province of Isabela. Al- 
titude 3000 feet. No date. Lyon 126: Mindanao. Camp Keithly, 
Lake Lanao. September-October 1906. Clemens s.n. 
New Guinea, Kaiser-Wilhelmsland. Auf Biumen in den Wialdern 
am Kenejia. Altitude 150 meters, October 17, 1908. Schlechter 18420, 
Without doubt the names cited above comprise a sin- 
gle species. There are two sheets of the type number of 
Schlechter’s species in Herb. Ames; on one of these 
sheets the flowers are much larger than those of any ma- 
terial from the Philippines I have examined; on the other 
sheet the flowers are equal in size to those borne by Phil- 
ippine specimens. ‘The details of the flowers seem to be 
identical. 
Renanthera philippinensis (4 mes & Quis. ) L. O. 
Williams comb. nov. 
Renanthera Storie: Reichb. f. var. philippinensis Ames 
& Quisumbing in Philipp. Journ. Sci. 47 (1982) 210, 
t. 8, figs. 1-2; t. 7, figs. 12-19; t. 24 in part. 
There is no doubt but that Renanthera philippinensis 
is quite distinct from Renanthera Storiei Reichb. f. Ames 
and Quisumbing pointed out in the original description 
of FR. Storie: var. philppinensis that the type of their va- 
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