Platanthera.] cxxxiii. ORCHiDEiE (rolfe). 205 



half as loDg as the dorsal sepal. Rostellum transverse, thick. — 

 BracJiycorythis engleriana, Kraczl. in Engl. Jahrb. xxii. 20, 



Upper Guinea. Cameroons : Yaunde, Zenker, 563. 



Only known to me from the original description. 



3. P. tenuior, Rolfe. Plant 0-15 in. high, leafy. Leaves ovate 

 or ovate-lanceolate, acute or acuminate, |-1^ in. long, decreasing 

 into sheaths below and into the bracts above. Racemes 1-4^ in. 

 long, many-flowered. Bracts lanceolate or ovate-lanceolate, acute or 

 acuminate, 4-12 lin. long. Pedicels 3-4 lin. long. Flowers purple. 

 Dorsal sepal elliptic-oblong, obtuse, concave, 3 lin. long ; lateral 

 obliquely semiovate-oblong, 3 J lin. long. Petals obliquely oblong, 

 obtuse, 3 lin. long, the lower side with a rounded base. Lip entire, 

 3-3 J Hq. long, oblong, obtuse, with reflexed sides and rounded basal 

 auricles ; disc with a fleshy central nerve and a pair of narrow erect 

 lamellae at the base ; spur 3|^ lin. long, conical-oblong, obtuse. Column 

 stout, 2 lin. long. — Brachycorythis tenuior, Reichb. f, in Flora, 18G5, 

 183 ; Reichb. f. Otia Bot. Hamb. ii. 104. Hahenaria tenuior, N. E. 

 Brown, in Gard. Chron. 1885, xxiv. 307. 



Mozamb. I>ist. British Central Africa : Nyasaland ; Shire Highlands, Blan- 

 tyre, Scott ! Fwambo, South of Lake Tanganyika, Carson, 11 ! 

 Also found in the Transvaal and in Natal. 



4. P. uncata, Rolfe. Plant G-7 in. high, 2-leaved. Leaves 

 subradical, elliptic-oblong, subacute or apiculate, 2-2\ in. long, f-1 J in. 

 broad. Racemes 2J in. long, lax. Bracts ovate, acuminate, 3-4 lin. 

 long. Pedicels 3-5 lin. long. Flowers purple. Dorsal sepal ovate, 

 acute, 2 lin. long ; lateral obliquely ovate, acute, 2 lin. long. Petals 

 suborbicular-ovate, acute, slightly shorter than the sepals. Lip 

 obovately trilobed from a cuneate base, 4-4 J lin. long ; side lobes 

 broadly oblong, obtuse ; front lobe triangular, acute, not half as long 

 as the side lobes ; spur broadly conical, inflated at the base, much 

 constricted and curved in the middle, subglobosely inflated at the apex. 

 Column stout, 1 lin. long. Stigma subsessile. Rostellum triangular, 

 short. 



Mozamb. Bist. German East Africa : Kwa Chiropa, Hannington ! 



36. PODANDRIA, Rolfe. 

 Sepals free ; lateral narrower than the dorsal, reflexed. Petals 

 simple, filiform-setaceous, erect, longer than the dorsal sepal and free 

 from it. Lip continuous with the column, shortly adnate to it,, 

 produced at the base into a long cylindrical spur; limb pendulous, 

 tripartite with narrow lobes. Column with a short broad base, foot- 

 less. Anther long stipitate ; cells parallel; apex inferior, free from 

 the side lobes of the rostellum, and exterior to them ; pollinia granular, 

 with very long slender caudicles, and exserted naked gland ; staminodes 

 lateral, oblong. Stigmas sessile, nearly confluent, situated within the 

 side lobes of the rostellum and at their base ; rostellum trilobed ; front 



