The genus Orchis is usually divided into sections, cha- 
racterized by the nature of the tubercles of the roots; a dis- 
tinction which obviously is inconvenient, and which 1s also 
incompatible with a natural distribution of the species. A 
better character may be obtained from the calyx, which in 
some converges into a sort of casque or helmet ($. MILITARES), 
and in others is spread open or reflexed ($. mascuLz.) The 
sections of Orchis thus obtained are so extremely distinct 
that it may be doubted whether, upon the principles on 
which other genera are constituted, they should not be 
considered each a genus. But so much inconvenience would 
attend an alteration in the names of a great many common 
species, that less disadvantage will perhaps arise from re- 
taining the militares as a mere form of Orchis; although the 
inconvenience might be diminished by the creation of such 
a name as Herorchis. 
As some time must elapse before the appearance of the 
fourth part of the genera and species of Orchidee, it may 
be interesting to Botanists to know in what way we propose 
to distribute the genera of Ophrydex. We therefore avail 
ourselves of the present opportunity to explain our present 
views upon the subject. The following list will shew, firstly, 
what the general arrangement of the tribe will be, an 
secondly, what new genera we propose to establish. 
* Anthere loculi contigui paralleli, basi nullo modo elongati v. 
divaricati, 
, 1. Orchis.—2. Anacamptis.—3. Nigritella.—4. Glossaspis.—5. Gymna- 
denia.—6. Scopularia nob.—7. Aceras, as limited by Dr. Brown.—8. Sera- 
pias,—9. Ophrys. 
. ** Anthere loculi sejuncti, basi divergentes, sepe elongati. 
10. Monotris nob.—11. Holothrix.—12. Bartholina.—13. Disa.—14. Re- 
pandra nob. (=Disa cornuta, &c.) —15. Corycium.—16. Dryopeia.—17. Dispe- 
ris.—18. Pterygodium.—19. Satyrium.— 920. Bonatea.— 21. Habenaria.— 22. Di- 
plomeris Don (=Diplochilus Lindl.) —23. Bilabrella nob.—24. Cynon 
25. Tryphia nob. (—Orchis secunda Thunb.)—26. Bicornella no5.—27. Ce s 
glossum mob.—28. Peristylus Blume (the calcarate Herminia.)—29. Herm 
nium (as limited by Dr. Brown.)— 30. Aopla nob.— 31. Platanthera, (=Mecosa 
Blume, and including most of the North American Habenarias. )—32- Perularia 
nob. (=0. fuscescens L.) 
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