CXXII. OECniDACE^. 3G1 



7. ANGR^CUM, Pet. Th. 



Perianth spreading; the sepals and petals subequal, free. 

 Labellum sessile, continuous with the base of the column, 

 fleshy, undivided, much wider than the petals, prolonged at 

 base into a subcylindrical spur, usually much longer than the 

 perianth. Column small, rarely elongate, semiterete. An- 

 ther 2-celled, truncate. Pollinia 2, 2-parted, with a narrow, 

 short caudicle and triangular gland. — Lindl. Orcli. p. 215; 

 Harv. Thes. t. 107, 108. 



Caulescent epiphytes, with coriaceous, hgulate leaves, obHque at apex. 

 Flowers solitary or racemose, mostly white. — Several Cape species, in 

 Eastern district and Natal. 



8. MYSTACIDIUM, Lindl. 



Perianth spreading ; the sepals and petals subequal, petaloid. 

 Labellum with a very long, filiform spur, and undivided limb, 

 jointed to the base of the column. Column short, straight, 

 fleshy, semiterete, furnished at the apex, on each side, with a 

 hnear process. Rostellum ovate, elongate, convex, nude. 

 Anther membranous, 2-celled. Pollinia 2, hollow-backed, w4th 

 a long, 2-legged caudicle ; the filiform legs each attached to a 

 peltate gland. — Lindl. in Rooh. Comp. Bot. Man. ii. p. 205 ; 

 Harv. Thes. t. 173, 174, 175. 



Epiphytes, with the habit of Angrcecum. Spurs of the labellum very 

 long and slender. — 3 species, natives of Eastern district and Natal. 



9. CALANTHE, E. Br. 



Perianth expanded, free, or the lateral sepals slightly at- 

 tached to the labellum, subequal. Labellum connate \di\\ the 

 column, lobed or entire, spurred or hornless, Avith the disk 

 lamellate or tubercled. Column short, the rostellum mostly 

 beaked. Pollinia 8, much attenuate at base, adhering in fours 

 to a 2-partible gland. — Lindl. Orch. jp. 249. 



Terrestrial plants, with erect, many-flowered scapes. Leaves broad, 

 plaited. Flowers white or Hlac, rarely yellow. — 1 species, C. sylvatica. 

 found at Natal. 



Teibe 3. OpirRYi)E.E. (Gren. 10-39.) 

 10. HOLOTHRIX, Eich. 



Sepals converging, equal. Petals free, spreading, larger 

 than the sepals. Labellum spurred, connate with the column, 

 lobed, concave. Anther erect, with parallel cells. Grlands of 

 the pollinia in two separate hoods. — Lindl. Orch. p. 283, 



Small herbs, with 1-2 radical leaves ; a nude scape and minute, green or 

 greenish flowers. — ■! or 5 species, dis[)ersed. 



