Brachycorythis.] CXXXII. ORCHIDEÆ (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, 3 lin. long. 
Mozamb. Dist. British Central Africa: Fwambo, South of Lake Tanganyika, 
about 5200 ft., Nutt ! 
7. B. Pumilio, Reichb. f. in Flora, 1882, 531. Plant 2-24 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, 34-4 lin. long; lateral spreading, oblong, minutely 
apiculate, suboblique at the base, 5-6 lin. long. Petals oblong, obtuse, 
24-3 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 lamelle in front of the sac. 
Column stout, 3 lin. long. Stigma a large central cushion, | 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 Guinea. Sierra Leone: River Bagru, Mann, 904! 
Lower Guinea. Angola: Malange, Mechow, 368 (ex Reichenbach). 
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, 4 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, 24-3 lin. long. 
Mozamb. Dist. British Central Africa: Nyasaland; Shire Highlands, near 
Blantyre, Last ! 
Near B, Pumilio, Beicht, 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 to 
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, narrow or broad, entire or trilobed ; side 
obes sometimes fimbriate or pectinate. Column short, footless ; clinan- 
rum 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 
