]54 cxxxiiT. ORCHiDEiE (rolfe). [ListrostacJiT/s . 



JtO-wer Guinea. Gaboon : Como River, Bates, 462 ! and without locality, 

 Dii Chaillu ! Munda Dist. : Sibange Farm, Soyaux, 246 ! Loango, MichoUtz ! 



Much larger than the S. African L. arcvata, Reichb. f., with which Lindley 

 formerly confused it. A fruiting specimen from Sierra Leone, Scofi-Elliof ! may 

 belong here. 



3. L. acumixiata, Rolfe. Leaves oblong, shortly, obtusely and 

 unequally bilobed, 5 in. long, IJ in. broad. Raceme several-flowered. 

 Bracts broadly ovate, subacute, cucullate, 9-1 1 lin. long. Pedicels 14 lin. 

 long. Sepals and petals lanceolate, acuminate, somewhat undulate, 

 11-13 lin. long. Lip lanceolate, acuminate, rather more fleshy than 

 the sepals and petals, 10-12 lin. long; margins somewhat incurved 

 near the base ; disc slightly gibbous in front of the spur ; spur a little 

 curved, stout below, much narrowed above, lf-2 in. long. Column 

 very stout, 1-1 J lin. long. 



Ziower Guinea. Princes Island, Henriques ! 



4. Ii. Hookeri, Rolfe. Stems short, 4-5 in. long. Leaves linear- 

 oblong, 3-5 in. long, 0-10 lin. broad; apex very shortly bilobed; lobes 

 slightly unequal, rounded. Racemes 2^-4 in. long, 4-10-flowered, 

 secund. Bracts broadly ovate, subobtuse, 3-5 lin. long. Pedicels 

 6-9 lin. long. Sepals lanceolate, acuminate, 0-7 lin. long, recurved. 

 Petals similar to but slightly smaller than the sepals. Lip acuminate 

 from a broader triangular- ovate base, recurved, nearly as long as the 

 petals; spur rather stout, nearly straight, 1^-1 J in. long. Column 

 very stout, f lin. long; rostellum linear, IJ lin. long, deflexed into the 

 spur ; gland linear, 1^ lin. long ; stipites distinct, J lin. long. — A7igrcemm 

 arcuatum, Hook. f. in Journ Linn. Soc. vii. 220 (not of Lindl.). 



Upper Guinea. Cameroon Mountains, 4000-6000 ft. Mann, 2114 ! Johnston, 

 101! 



Near the South African L. artuaia, Reichb. f., with which it has been confused, 

 but with a nearly straight spur and thinner leaves. 



Fine fruiting specimens from near Sulimania, Sierra Leone, Scott-Elliot, 5282 ! 

 and near Sutah, Ashanti, Cummins, 37 ! apparently represent distinct species of this 

 aflSnity, but cannot be identified without flowers. 



5. L. Sedeni, Reichh. f in Gard. Chron. 1878, ix. 138. Leaves 

 broadly ligulate, obliquely tridentate or shortly bilobed, 5-6 J in. long, 

 4-1 in. broad. Racemes 5 in. long. Bracts ochreate, lanceolate, acute, 

 half to one-third as long as the pedicels. Flowers white, with a reddish 

 spur. Sepals lanceolate, acuminate. Petals subequal. Lip lanceolate, 

 acute, without lateral teeth; spur wide at the mouth, tapering or filiform 

 towards the apex, acute, nearly straight, longer than the pedicel. 

 Column short ; anther abruptly rostrate ; rostellum linear, divided only 

 to the middle. — Angroecum Sedeni, L. Lind. k Rodigas in Lindenia, 

 iii. 81, t. 135. 



East Africa. Culminated specimen, SecJen. 



Near the South African L. arcuata, Reichb. f., but with broader and longer leaves, 

 longer and more acute bracts, straight spur, lip without lateral teeth, beaked anther, 

 and bifid rostellum. Only known to me from the original description and the figure 



