OAKES AMES, director. 
BOTANIC CARDEN OF HARVARD UNIVERSITY, 
CAMBRIDGE, MASS. U.S.A. 
June 12th, 1922. 
My dear Mr. Powell: 
Your letter instructing me to beom 
the watch for another package of orohids has just oorie. 
Also your supplementary list of Sohlechter's identificat¬ 
ions based on your numbers. X hatfe cheeked up the £ew Set 
in conformity with our plan. 
Enoyolia testaoea (Batem.) Sohltr., is 
undoubtedly a slip for Bpi den drum tessellatum Bat era., as 
Bateman never published an E. testaoeum. X believe JS. 
tessellatum is intended. Your material, however, is not 
that species, if I understand it oorreotly, but rather 
S. trtpterum Lindl, a near ally of R. tessellatum which 
has been redtoed questionably to E. tessellatum.As a matter 
of faot your material is similar to if not identical with 
E. Dearali Sohltr., from Guatemala, a speoies that I eon- 
sider too olose to E. tripterua. I have marked the Kew 
specimen E. tripterum lindl. If I find sufficient evidence 
to ohange ray mind I will write to you. 
Chondrlrhyneha oaloglossa is sailing 
pretty olose to the wind, Sohleohter in 191S originally 
published this as Waresewlozella oaloglossa. X have not 
boiled up flowers for s critical comparison, but flrom the 
general aspeot of the flowers of the two speoies it comes 
painfully close to 0. Lipaoombiae Rolfe. 
Onoidlum Oestedii Heiohb. f. is regarded 
as a variety of 0. oarthaginense by Kraenzlia in his reoent 
monograph of the genus Oncidiura* I am inolined to agree 
with his deductions. The differences between the normal 
form and the several recognized varieties are very slight. 
Selchenbach himself regarded 0. Oestedii as a variety of 
0* oartaginense and showed good judgement. ! *hen your spec¬ 
imens arrive it will be interesting to study them. 
What slip have you made with Habenaria 
avicula Sohltr? Your 162 in the Kew Set Is surely not the 
species Sohleohter described as H. avicula. I am waiting 
impatiently for the specimens you are sending as this is 
one of the speoies that I have been studying recently. The 
Eew 162 {small flowered form) is a new speoies as I now see 
it, not H* avioula. Either you have mixed labels or twisted 
things, or else Sohlechter's botanical optics need attention* 
Yours cordially. 
