Satyrium.'] cxxxiii. orchide^ (rolfe). 275 



and more than twice as broad, spreading. Petals united for nearly 

 half their length to the sepals, and similar to the odd one. Lip 

 galeate, 4-4 J lin. long, the basal third united to the lateral sepals ; 

 mouth broad and round ; apex very broad and obtuse ; spurs broadly 

 saccate, scarcely J lin. long. Column 2 J lin. long ; stigma very broad 

 and obtuse; very short, broad, and somewhat bilobed. 



Ziower Guinea. Angola : Huilla ; Lopollo, near the River Ferrao da Sola, 

 in swampy meadows, Welwitsch, 727 ! 



32. S. longibracteatum, Rolfe in Bolet. Soc. Brot. vii. 238. 

 Scape tall, the upper part with three erect, lanceolate subacute sheaths, 

 1 J-2 in. long, base and leaves not seen. Raceme short and dense, 2 in. 

 long, many-flowered. Bracts linear-lanceolate, acute, spreading, much 

 longer than the flowers, f-1 in. long. Pedicels 2J lin. long. Sepals 

 reflexed, obovate-elliptical, obtuse, with revolute margins, 2 lin. long, 

 lateral broader and somewhat spreading. Petals united for a third 

 of their length to the sepals, and similar to the odd one. Lip galeate, 

 2 J lin. long, the basal fifth united to the lateral sepals; mouth IJ lin. 

 broad ; apex broad and obtuse ; spurs broadly saccate, obtuse, | lin. 

 long. Column Ij lin. long; stigma broadly triangular-ovate, sub- 

 apiculate ; rostellum quadrate, emarginate or slightly bilobed. 



Ko-wer Guinea. Angola : Huilla, Antunes, 17 ! 



33. S. Mechowii, Reichh. f. in Flora, 1882, 531. Leaves 4-8, 

 decreasing upwards into the bracts. Raceme cylindrical, dense-flowered. 

 Bracts lanceolate, acuminate, longer than the flowers, reflexed during 

 flowering. Lip calceolate, arched in the middle, without spurs. 



]boi!crer Guinea. Angola : Malanje, Mechow, 234b. 



Only known to me ftom the description, in which it is said to be allied to 

 S. paludosum, Reichb. f., but distinct in the absence oi' spurs, in which respect it 

 resembles the South African S. onuticum, Lindl. 



44. DISA, Berg. ; Benth. et Hook. f. Gen. PI. iii. 630 

 (by K E. Brown). 



Sepals free, the odd one dorsal in the Tropical species, concave, 

 hood-shaped, or helmet-shaped, with or rarely without one spur or 

 sac. Petals usually much smaller than the sepals, generally more or 

 less adnate to the column at the base, often included within the dorsal 

 sepal, but quite free from it, very variable in shape. Lip anticous, 

 sessile or clawed, entire, lobed, or fringed, but not crested. Column 

 short. Anther erect, horizontal, or reflexed, 2-celled, the cells dis- 

 tinct and parallel; pollinia solitary in each cell, granular, attached 

 by short or long caudicles to one gland, or to two distinct glands, 

 seated at the apex or in the arms of the rostellum. Rostellum 

 erect, subentire, bifid, or trifid at the apex, sometimes with side pro- 

 cesses, often more or less adnate to the base of the petals, and some- 

 times forming a ridge upon them. Stigma seated in front of the 

 rostellum, cushion-like. Capsule straight or twisted, erect, subcylindiic, 



