or oblong-lanceolate, subacute, navicular, up to 6.1 mm. 
long and 1.1 mm. wide, 8-nerved. Petals obliquely ob- 
long- or elliptic-lanceolate, somewhat shorter than the 
sepals, up to 4.1 mm. long and 1 mm. wide, acute, 3- 
nerved. Lip arcuate with the sides of the lower part erect 
and incurved in natural position, when expanded oblong- 
ovate, deeply 3-lobed at the base, rounded at the apex, 
broadly rounded at the base, about 2.1 mm. long; lat- 
eral lobes small, narrow, strongly faleate, triangular- 
lanceolate; mid-lobe many times larger than the lateral 
lobes, ovate with the margins (especially the posterior 
ones) irregular, making a sharp sinus with the lateral 
lobes; dise with a pair of short keels running from the 
base of the lateral lobes to the lower part of the mid- 
lobe. Column slender, arcuate, about 1.8 mm. high 
measured at the back, dilated below and extended into 
a stout foot. 
Octomeria complanata is apparently distinct by reason 
of its flattened stems. Its floral segments are similar to 
those of the Bolivian O. tenuis Schltr. which is a much 
larger species throughout. It differs from the Brazilian 
O. brachypetala Schltr. in its much shorter stems, smaller 
flowers and in the dissimilar apex of the lip. 
Loreto: Mishuyacu, near Iquitos, at 100 meters altitude, in forest, 
October-November 1929, G. Klug 471. (Typr in Herb. Ames No. 
60987; Dupiicate types in U.S. Nat. Herb. No. 1455472 and in 
Herb. Field Mus. No. 620502). 
[ 196 | 
