256 CXXXIII. ORCHIDEE (ROLFE). [Platycoryne. 
Eastern species. 
Spur clavate S S . . 4. P. buchananiana, 
Spur scarcely dilated at the apex . . 5. P. tenuicaulis. 
Lip distinctly trilobed : : . 6, F crocea. 
Spur 11-13 lin, long . 7. P. Protearum. 
Petals bilobed. 
Posticous petal lobe filiform S : : . 8. P. Guingange. 
Posticous petal lobe ovate-lanceolate - - . 9. P. poggeana, 
1. P. aurea, Rolfe. Plant slender. Stem 12-13 in. long, sparsely 
leafy. Leaves oblong-lanceolate, acute or acuminate, 11-2 in. long, 
4-5 lin. broad, passing into sheaths below and bracts above. Racemes 
congested, 3-5-flowered. Bracts nearly spathaceous, ovate, acute. 
Flowers 3-4 lin. long, golden yellow. Dorsal sepal ovate, acute, 
cucullate or galeate, recurved at the apex; laterals deflexed, subfalcate, 
oblong, acuminate. Petals simple, falcate, adherent to the dorsal 
sepal. Lip simple, narrowed from a triangular base, acuminate, as long 
as the lateral sepals; spur filiform, straight, 1-14 lin. long. Stigmatic 
processes thick, fleshy. Anther channels straight, “a little shorter 
than their caudicles.” Rostellum with a cucullate base, lanceolate 
above, nearly as long as the anther.—Habenaria aurea, Kranzl. mm 
Engl. Jahrb. xvi. 209; Durand & Schinz, Conspect. Fl. Afr. v. 74. 
Upper Guinea. Upper Senegal, in rice fields, Lecard, 204. 
Only known to me from the original description. 
2. P. paludosa, Rolfe. Plant slender, 1-1} ft. high. Leaves 
few, cauline, rather distant, oblong-lanceolate, acute, 4—14 in. long. 
Racemes 2—4- (sometimes 1-) flowered. Bracts ovate-lanceolate, shortly 
acuminate, 4-5 lin. long. Pedicels 6-9 lin. long. Flowers deep 
orange. Sepals 4 lin. long; dorsal ovate-oblong, apiculate; later 
lanceolate-oblong, subacute. Petals simple, lanceolate, subacute, 4 lin. 
long, appressed to the dorsal sepal. Lip subspathulate-linear, obtuse, 
24 lin. long, with a pair of minute, basal teeth; spur subclavate, sub- 
acute, 4 lin. long. Stigmatic processes oblong, obtuse, connate, 1 lin. 
long. Anther channels linear-oblong, 14 lin. long. Rostellum triangu- 
lar, subobtuse, 1 lin. long.—Habenaria paludosa, Lindl. in Journ. Linn. 
Soc. vi. 139; Krinzl. in Engl. Jahrb. xvi. 208. 
Upper Guinea. Niger Territory: Nupe; in swamps, Barter, 1479! 
3. P. Wilfordii, Rolfe. Tuber oblong, } in. long, 5 lin. broad. 
Stem slender, 8—11 in. long, 4—5-leaved. Leaves oblong-lanceolate, 
acute or apiculate, sheathing, 1 in. long, 24 lin. broad. Racemes 1-3- 
(usually 2-) flowered. Bracts broadly ovate, one-third as long as the 
ovary. Pedicels 14 lin. long. Flowers yellow. Dorsal sepal broadly 
oblong, acute, 34 lin. long; laterals reflexed, half twisted, oblong- 
linear, acute, carinate behind. Petals lanceolate, falcate, acute, 
adherent to the margin of the dorsal sepal, free only at the apex. Lip 
simple, narrowly linear from a slightly smaller base, obtuse, as long a5 
the sepals; spur cylindrical, obtuse, twice as long as the sepals. Stig- 
matic processes triangular, acute from a broad base, deeply excavate 
