311 MB. G. UEJST1IAM ON OHCHlDEi:. 



genera Dinema, Lindl., Prostliechea or Epithecium, Kn. and Westc., 

 and Encyclia, Hook. 3. Auliseum, and 4. Euepidendrum, with 

 the unguis of the labellum adnate to the top of the column, 

 or nearly so, the lamina appearing sessile. Auliseum, in two 

 series, would include Auliza, Salisb., and Anacheilum, Hoffmans.; 

 and Euepidendrum, in ten series, would include (Erstedella, 

 Eeiehb. f., AmpMglotlis, Salisb., Pseudepidendrum, Eeichb. f., 

 Physinga, Lindl., and Nanodes, Lindl. To these four sections I 

 would doubtfully add a fifth, under the name of Psilanthemum, 

 for the E. Stamfordianum, Batem. (E. basilare, Link, KL, and 

 Otto, E. cycnostacJiys^eichb. f.), which, from its leafless flowering 

 scape and some differences in the shape and arrangement of the 

 pollen-masses, might well be admitted as a distinct genus. 



BrouglitoniaA\. Br., three or four West-Indian species, and Catt- 

 leya, Lindl., about twenty species, are both united by Eeichenbach 

 with Epidendrum • and the following genera, with eight pollen- 

 masses, are referred by him to Bletia, an arrangement in which 

 I am unable to concur, especially in ignorance of the characters 

 he would assign to the compound genera thus formed. 



Laliopsis, Lindl., comprises three or four West-Indian species, 

 with the flowers nearly of Lcelia, but with the reduced upper pol- 

 len-masses and the habit rather of Tetramicra. The plant Lindley 

 received from Hinds as Chinese, and which he published first as 

 a Brouglitonia and then as a Lceliopsis, has been satisfactorily 

 shown by Eeichenbach to have been really Mexican and a true 

 Epidendrum, nearly allied to E. ncevosum, Lindl. 



In Tetramicra, Lindl., about six species, we would include 

 Leptotes, Lindl., of which the pollen-masses were described as two 

 only in the lower series, evidently by some mistake. I find four 

 in the flowers examined, as figured in Bot. Mag. t. 3731. Tetra- 

 micra ienera, Griseb., is a true species, with the labellum of Lep- 

 totes. Bletia pratensis, Eeichb. f., and B. Schomburglii, Eeichb. f., 

 appear to me to be but very slight varieties of the original T. 

 rigida. T. platyphylla, Griseb., is rather a true Bletia. T. mon- 

 tana, Griseb., constitutes the above-mentioned genus Octadesmia. 



Brassavola, E. Br., about twenty species, calls for no remark ex- 

 cept that B. glauca, Lindl., and B. Bigbyana, Lindl., which have 

 not the characteristic perianth of Brassavola, might be better 

 placed in Lalia, near those Brazilian species which have the 

 petals scarcely broader than the sepals. 



Lcelia, a well-known and splendid genus of about twenty species, 



