ORCHIDS OP MADAGASCAR. 489 



short as in that species, and the habit is much the same. The 

 leaves are narrow, 4 inches long by | in diameter, narrowed at the 

 base ; the peduncles very slender. 3 inches long, with a single dark- 

 coloured close-fitting sheathing-lcaf, and bearing at the apex a 

 single yellowish ochreoua flower, rather larger than that of Jf. 

 caulescens. The petals and sepals are rather narrow and acute, the 

 latter erect or reflexed, the former carried forwards over the lip. 

 The lip is not flattened but concave and somewhat boat-shaped, 

 acute at the tip, a little longer than the petals. The spur is long 

 and slender, pendulous or spreading, filiform, with the apex a 

 little dilated. The ovary is short and remarkably twisted side- 

 ways ; the spur running across the twisted portion. 



Mystacidium ryAPERTmr, mihi. — Angrajcum inapertum, 

 Thouars, Orch. lies Afr. t. 50; Lindley, Gen. fy Sp. Orch. PL 

 p. 247; 8. Moore in Flora of Maur. and Seych. p. 358. 



M. caule semipedali ; foliis paucis lanceolatis angustis acutis, 

 apice bilobis, 2g-uncialibus ; pedunculis paucis tenuibus brevibus 

 paucifloris ; bracteis minimis ovatis ; floribus parvis inapertis 

 viridibus ; petalis sepalisque angustis lanceolatis acutis ; labello 

 subsimili subaequali ; calcare brevi curvo, quam ovarium multo 

 breviori, clavato obtuso horizontali ; ovario angulato oblongo. 



Madagascar, Ankafana, Deans Cowan ! in Herb. Brit. Mm. 

 Mauritius, Thouars, Bojer. Bourbon, Thouars. 



This curious plant is represented by a couple of stems with 

 leaves and a single flower, together with a coloured drawing, in 

 Deans Cowan's collection ; and I have seen it nowhere else. The 

 stems are about 6 inches high, and emit several long roots ; at 

 the top are a few, three or four, narrow leaves, 2|-2f iuches long 

 and about | inch or rather less across. The peduncles are about 

 \ an inch long, and bear one or two (?) small flowers. The 

 colour of the flower, as given by Thouars, is white. Deans Cowan 

 figures it as green. It does not appear to open entirely, and is 

 possibly self-fertilized. The spur is short and club-shaped, 

 parallel with the ovary. The ovary is straight and rather sharply 

 angled. The whole flower is half an inch in length. It seems to 

 be most nearly related to M. caulescens. 



§ Eumystacidium. 

 M. texellum, n. sp — Pusillum, caulibus 2-3-phyllis ; foliis 

 viridibus flaccidis obtuse lanceolatis, quam racemus brevioribus ; 

 racemis tenuibus erectis, demum nutautibus folia superantibus ; 



2n2 



