Listrostachys.'] cxxxiii. orchide^ (kolfe). ICl 



decurved. — Angrcecum monodon, Lindl. in Paxt. Fl. Gard. ii. 102, 

 fig. 187 (not in Journ. Linn. Soc. vi. 135). 



lao-wer Guinea. Gaboon : cultivated specimen, Fescatore ! 



Only known from the original specimen. 



26. L. pertusa, Reichh. f. in Walp. Ann. vi. 908. Stems stout, 

 short, '2-(j in. long, clothed with the persistent, imbricate leaf-bases. 

 Leaves ligulate or linear-oblong, shortly and very unequally bilobed, 

 4-8 in. long, G-10 lin. broad. Racemes stout, erect or spreading, 6-1) in. 

 long, dense-flowered almost to the base. Bracts ochreate, very short, 

 alternate. Pedicels 1 lin. long. Flowers small, distichous, white, 

 furfuraceous. Sepals broadly ovate, obtuse, 1^-1^ lin. long. Petals 

 similar to but a little smaller than the sepals. Lip broadly unguiculate, 

 suborbicular-obovate, obtuse or apiculate, slightly reflexed, Ij- 1| lin. 

 long; spur stout, clavate, dorsally compressed, 1 J-2 lin. long. Column 

 very stout, 1 lin. long; pollinia with a crescent-shaped gland, and 

 2 clavate, flattened stipites, denticulate at the margins. — Angrcecam 

 pertusum, Lindl. in Hook. Comp. Bot. Mag. ii. 205 ; Journ. Linn. Soc. 

 vi. 135; Bot. Mag. t. 4782. 



Upper Guinea. Sierra Leone : cultivated specimen, Loddiges ! Lagos, 

 Moloney ! Niger Delta : Brass, Barter, 1826 ! Nun Kiver, Mann, 524 ! Cameroons : 

 Efulen, Bates, 395 ! 



27. L. clandestina, Rolfe. ''Caulescent." Leaves ensiform, 

 recurved, thick, 7 in. long, 3-4 lin. broad, very obliquely bidentate, 

 with the lower tooth 1\ lin. below the upper. Spike horizontal, dense. 

 Bracts ovate, coriaceous, rigid. Flowers furfuraceous ; sepals and 

 petals white ; lip green. Sepals broadly ovate-oblong, obtuse, concave, 

 2 lin. long. Petals Hnear-oblong, obtuse, 2 lin. long. Lip trilobed, 

 concave, 2 lin. long ; side lobes ample, oblong, obtuse ; front lobe ovate, 

 apiculate, obscurely crenulate, concave ; spur clavate, inflated at the 

 apex, curved, 2 J lin. long. Column stout, \^ lin. long; rostellum 

 elongate, bipartite, lobes subulate, descending at the base, sharply 

 inflexed at the middle, and then ascending. — Angrcecum clandestinum, 

 Lindl. in. Hook. Comp. Bot. Mag. ii. 206 ; Reichb. f. in Walp. Ann. 

 vi. 906. 



Upper Guinea. Sierra Leone : cultivated specimen, Loddiges ! 

 An imperfectly known species, apparently of this affinity. 



28. Ii. gabonensiSy Rolfe. Leaf linear-oblong, shortly, obtusely, 

 and unequally bilobed, 5 in. long, 10 lin. broad. Raceme G in. long, 

 dense, many-flowered. Bracts alternate, broadly tubular, nearly truncate 

 or apiculate, J-f lin. long. Pedicels 1 lin. long. Lateral sepals broadly 

 elliptic-oblong, obtuse, 1-1 J Hn. long ; dorsal, and the petals, sub- 

 orbicular, 1 lin. long. Lip suborbicular, emarginate, 1 lin. long ; spur 

 cylindrical, slightly narrower near the base, 3^ lin. long. Column stout, 

 J lin. long. 



Ibower Guinea. Gaboon : cultivated specimen ! 



Flowered in the Jardin des Plantes, Paris, in 1886. 



