466 MB. H. V. KIDLEY ON THE 



being most abundant in the Indo-Malayau region. The only 

 recorded species from the Mascarene Islands is found also in 

 Natal. 



Calanthe sylvatica, Lindley, Gen. and Sp. Orch. PI. 250 ; 

 Fol. Orch. no. 15; Beichb.f. in Walp. Ann. vi. 914 ; S. Moore, 

 Fl.Maur. etSeych. p. 363. — C. versicolor, Lindley, Sertum Orchid. 

 t. 42; Fol. Orch. no. 16. — Centrosis sylvatica, Thouars, Orch. 

 lies Afr. tt. 35, 36.— Centrosia Auberti, Mich. Orch. Maur. 45, 

 t. 7. f. 3.— Bletia sylvatica, Bojer, Jlort. Maur. 318. 



Madagascar, Thompson ! Imerina, Deans Coivan ! Mauritius, 

 Sieber, Fl. Maur. 170! Kerb. Brit. Mus. ; Bojer, Gardner, Herb. 

 Kew. 



It occurs also in Bourbon, S. Africa, and the Seychelles. The 

 whole plant is about 1 foot or 15 inches high. The leaves from 

 3 inches to 9 long, about 2 across. The spur 1 inch long. 



Phaius. 



All the Mascarene species of this genus belong to the section 

 Gastrorchis, Blume, which are distinguished by the saccate, ven- 

 tricose, not spurred, base of the labellum, which is also usually 

 shorter and broader and more open than in the remainder of the 

 genus. The petals and sepals are also usually broader. 



The genus is distributed over the tropics of the Old World, and 

 in China and Japan. The Mascarene. species are : — Ph. villosus, 

 Eeichb. f., Mauritius ; Ph. tetragonus, Eeichb. f., Mauritius and 

 Seychelles ; Ph. stuppeus, Blume, Bourbon ; Ph. tuberculosus, 

 Blume, Humblotii, Eeichb. f., and Ph. pulchellus, Kranzlin, 

 Madagascar. 



Ph. tuberculosus, Blume, Orchid. Archipel. Ind. p. 13 ; Gard. 

 Chron. March 1881, p. 341 (xylogr.) ; Garden, July 1884, p. 46. 

 — Limodorum tuberculosum, Thouars, Orch. lies Afr. t. 31. — 

 Bletia tuberculosa, Sprengel, Syst. Veget. iii. 744 ; Lindley, Gen. 

 and Spec. Orch. PI. p. 143. 



Madagascar, endemic, Thouars ! in Herb. Brit. Mus. 



It has been introduced into cultivation, but comparatively 

 seldom flowers. In Thouars's figure the flowers are given as 

 entirely pink, which is at variance with those of the plants 

 flowered in this country. 



Ph. Humblotii, Beichenbachfil. in Gard. Chron. 1880, ii. p. 812. 

 — Plauta tripedalis, rhizomate repente ; foliis late lanceolatis 

 plicatis pedalibus ; racemo laxo ; bracteis ovario duplo brevioribus, 



