358 CXXII. ORCHIDACER. 
Labellum anticous. 
Petals entire. 
Sepals membranous, connate at 
back ; petals fleshy, acuminate. 14. 
Sepals herbaceous, converging ; 
petals aera eae linear or 
lanceolate. : 
Petals toothed, fleshy, converging 
** Labellum boat-shaped at base (not saccate), 
3-toothed at apex . . rae 
*** Tabellum 2-spurred or 2- saccate at ‘base, hel- 
met- or funnel-shaped. 
Labellum helmet-shaped ; stigma 2-lipped, 
the upper lip very large. 
Sepals 3, separate ; petals 2, similar . 
Sepals connate, in a 3-toothed lip; pe- 
talsO . Bee gost itt 
Labellum funnel- -shaped ; 
truncate ° 
**** Labellum spurless, rarely subconcave. 
(1) Labellum free (not attached to the face of 
column). 
Labellum posticous. 
Sepals spreading; labellum entire (like 
the petals) . 
Sepals converging ; “‘Jabellum 3-fid 
Labellum anticous. 
Back sepal galeate, spurred or saccate at 
back. 
Pollinia attached to a single gland . 
Pollinia attached to 2 separate glands. 
A 2-lobed appendix placed between 
the anther and rostellum; flowers 
as in Disa ; 
No appendix between ‘anther and 
rostellum. 
Petals entire . . aes 
stigma ee i 
Back sepal spurless, either somewhat 
hood-like or quite flat. 
Petals sessile, separate from the sepals. 
Sepals valvate in bud; labellum li- 
near or filiform . . 5 AS) 
Sepals imbricate in bud; “Jabellum 
truncate, small, fleshy . . . 30. 
Petals clawed, hood- -shaped, attached 
by the base of their claws to the 
separate sepals. 
Sepals entire ; petals and labellum 
fimbriate  . . 33. 
Sepals, petals and labellum all fim- 
briate. . 34. 
(2) Labellum attached to the face of. the column. 
Back sepal spurred; labellum minute, fili- 
form (perianth of Disa). . . 26. 
glee 
Sess, 
- 22. 
. 23. 
mss 
5 US) 
swale 
9 Sale 
2d: 
Petals 2-lobed or twisted, narrow 28. 
Monortris. 
TRYPHIA. 
Buccunina. 
BRACHYCORYTHIS. 
SATYRIUM. 
AVICEPS. 
SATYRIDIUM. 
PACHITES. 
STENOGLOTTIS. 
MoNADENIA. 
HERSCHELIA. 
Disa. 
ScHIZODIUM. 
PENTHEA. 
FoRFICARIA. 
Horton #aA. 
HALLACKIA. 
BROWNLEBA. 
