broadly truncate or abruptly acute at the apex, minutely 
erose except on the basal margins; dise rather abruptly 
narrowed below the lateral lobes, 38-nerved, bicarinate 
with the keels extending from the centre of the lateral 
lobes almost to the middle of the mid-lobe. Column ey- 
lindric, shightly arcuate and abruptly bent back near the 
summit, about 1.9 mm. long measured on the dorsal sur- 
face, with an elongated stigmatic orifice, extended into 
arelatively long foot. Anther conic-semiovoid. Pollinia 
elght, obliquely complanate-pyriform. 
Octomeria minor differs from O.rigida Rody. in its 
small vegetative proportions, less acuminate floral seg- 
ments, 8-nerved petals and membranaceous lip. 
Britisu Guiana, Essequibo River, Moraballi Creek, near Bartica. 
ee, ‘ . . 
Nearly at sea-level, “‘Epiphyte on the entomologist’s tree (Morabu- 
kea). Fl. cream.’? August 24, 1929. N.Y. Sandwith 112 (Type in 
Herb. Kew.) 
Octomeria parvula C.Schweinfurth sp. nov. 
Herba pusilla, epiphytica, caespitosa. Radices fibro- 
sae, numerosae. Caules pauciarticulati, unifoliati. Folium 
crassum ut videtur, lineari-ellipticum.  Inflorescentiae 
axillares, pauciflorae. Flos membranaceus. Sepala lan- 
ceolata vel ovato-lanceolata, trinervia, persimilia, Petal: 
paulo minora. Labellum in circuitu: ovato-ellipticum, 
prope medium trilobatum); lobi laterales parvi, auriculi- 
formes; lobus medius multo major, acutus, dentatus vel 
denticulatus. 
Plant small, slender, caespitose, about 8 cm. or less 
tall. Roots fibrous, glabrous, numerous. Stems filiform, 
decumbent at base, 1- to 3-jointed, 4.2 em. or less long, 
unifoliate, entirely concealed by close tubular sheaths 
which are commonly evanescent. Leaf linear-elliptic, 
apparently very fleshy in the fresh state, shortly petioled 
to subsessile, acute, erect or erect-spreading; blade up 
[90 | 
