Brachycorythis.'] cxxxiii. ORCHiDEiE (rolfe). 203 



broadly triangular, the middle nerve thickened, with an erect tubercle 

 in front of the sac ; sides of the sac broadly triangular-auriculate. 

 Column stout, J lin. long. 



IVIozamb. Dist. British Central Africa : Fwambo, South of Lake Tanganyika, 

 about 5200 ft., Nutt ! 



7. B. Pumilio, Reichh. f. in Mora, 1882, 531. Plant 2-2J in. 

 high ; apex 1-2-flowered. Leaves 3-4, cauline, sheath-like, imbricate, 

 oblong-lanceolate, acute, 5-7 lin. long. Bracts ovate-lanceolate, acute, 

 sheathing, 6-8 lin. long. Pedicels 7-9 lin. long. Dorsal sepal ovate- 

 oblong, apiculate, 3^-4 lin. long ; lateral spreading, oblong, minutely 

 apiculate, suboblique at the base, 5-6 lin. long. Petals oblong, obtuse, 

 2.J-3 lin. long. Lip broadly cuneate-obovate, shortly trilobed at the 

 apex, 4-5 lin. long ; lobes triangular, subobtuse, with the base broadly 

 subsaccate, and a pair of erect tubercles or lamellse in front of the sac. 

 Column stout, 3 lin. long. Stigma a large central cushion, 1 lin. diam., 

 filling the cavity formed by the union of the sac of the lip with the 

 base of the column ; rostellum ovate, obscurely tridentate above, 1 lin. 

 long. — Penthea Pumilio, Lindl. in Journ. Linn. Soc. vi. 138. Disa 

 Pumilio, Durand & Schinz, Conspect. Fl. Afr. v. 105 ("Papilio," by error). 



Upper G-uinea. Sierra Leone: River Bagru, _lfa?2?i, 904 ! 



Xiower G-ulnea. Angola : Malange, Mechow, 368 (ex Eeichenhach). 



8. B. Lastii, Rolfe. Plant about 3 in. high ; apex 2-4-flowered. 

 Tuber oblong, 5-6 lin. long. Leaves cauline, sheath-like, closely im- 

 bricate, ovate-oblong, acute, 8-12 lin. long. Bracts exactly like the 

 sheaths. Pedicels about 1 in. long. Dorsal sepal ovate, obtuse, ^ in. 

 long; lateral ovate-oblong, obtuse, spreading, oblique at the base, 

 7 lin. long. Petals ovate, obtuse, 4 lin. long. Lip cuneate-obovate, 

 with somewhat deflexed sides, 7-8 lin. long ; apex trilobed ; lobes 

 oblong, obtuse ; front lobe rather fleshy, conduplicate or reflexed at the 

 sides, saccate at the base. Column stout, 2|-3 lin. long. 



XVXozamb. Dlst. British Central Africa : Nyasaland ; Shire Highlands, near 

 Blantyre, Last ! 



Near B. Pumilio, Reichb. f., but the flowers are considerably larger. 



35. PLATANTHERA, Rich. ; Lindl. Gen. & Sp. Orch. 284. 

 Sepals unequal, free; lateral more or less spreading or reflexed. 

 Petals simple, usually narrower than the dorsal sepal, and appressed ta 

 • it, forming a galea. Lip continuous with the column, sometimes shortly 

 adnate to it, produced at the base into a short or much elongated spur ; 

 limb spreading or pendulous, nan-ow or broad, entire or trilobed; side 

 lobes sometimes fimbriate or pectinate. Column short, footless ; clinan- 

 drium erect, short or scarcely as long as the anther. Anther cells 

 parallel or diverging ; apex inferior, short and adnate to the side lobes 

 of the rostellum ; pollinia granular, with short caudicles, and exserted, 

 naked glands ; staminodes lateral, small, rounded or auriculate. Stigmas 

 sessile or subsessile, more or less confluent, often pulvinate ; rostellum 



