CXXII. ORCHIDACER. 857 
Tribe 1. MataxipE®. Anther opercular, deciduous. Pollen-masses 
(pollinia) waxy, 2-4-8, without caudicle or separate stigmatic glands. 
(Gen. 1-2 
Petals linear or filiform; labellum entire; column 
slender. . . 1. Lrparts. 
Petals oblong ; Ighellam 3- lobed, jointed mith ‘the 
produced base of the short column . . . . 2. POLYSTACHYA. 
Tribe 2. VanpDE#®. Anther opercular, deciduous. Pollen-masses waxy, 
2-4-8, fixed to a caudicle, united to a deciduous, stigmatic gland. (Gen. 
3-9.) 
* Pollen-masses 2. 
Labellum wholly spurless. 
Sepals and petals free—Epiphytes, with 
panicled flowers . . 3. CYMBIDIUM. 
Sepals and petals connate with the ‘much- 
produced base of the column.—Ground 
orchids, with racemose flowers. . . 5. CYRTOPERA. 
Labellum saccate or shortly spurred at base. | 
Sepals and petals subequal. . . 4, HULOPHIA. 
Petals much larger and eas -coloured 
than the sepals. . . 6. LissocHILus. 
Labellum with a long, filiform or cylindrical 
spur. 
Pollen with a short caudicle and triangular 
gland . . 7. ANGREOCUM. 
Pollen with a 2- legged ‘candicle, each ‘leg 
with a peltate gland . . . 8. Mysracrpium. 
** Pollen-masses 8, united in fours. " Ground 
plants, with racemose flowers. . . . . . 9. CALANTHE. 
Tribe 8. OpHRyDE®. Anther terminal, persistent. Pollen masses gra- 
nular, indefinitely numerous, clustering round a highly elastic, slender 
thread, attached at base to a stigmatic gland. (Gen. 10-39.) 
* Labellum with one spur, or at least saccate at 
base. 
Anther-cells parallel, not divergent at base. 
Petals entire. 
Labellum 3-5-7-lobed. 
Petals spreading, larger than the 
sepals. . . 10. HoLorurix. 
Petals erect, thin, much smaller than 
the sepals : . 20. SCHIZOCHILUS. 
Labellum expanded, multifid, ‘the lobes 
filiform . . . . 21, BARTHOLINA. 
Petals (and labellum) lacero-multifid. . 15. ScopuzaRra. 
Anther-cells divergent at base. 
Having both radical and cauline leaves 
or sheaths. 
Spur very short or saccate . . . . 11. PErisTyLus. 
Spur long or very long . . . . . 16. Hapenaria, 
Having 1-2 radical leaves only; scape 
sheathless. 
Labellum posticous; sepals converging, 
the lateralsaccate . ... . . . 12. SaccipruM. 
