27.2-88.2 cm. or more long (the longest blade incom- 
plete), apparently about 3 mm. in diameter. Peduncle 
exceeding 2.5 cm. in length (incomplete), with two flow- 
ers at the apex. Floral bracts very small, lanceolate- 
ovate, acuminate, deeply concave, amplexicaul, much 
shorter than the pedicellate ovary which is about 4 cm. 
long. Flowers large with widely spreading segments. 
Dorsal sepal lanceolate-linear, long-narrowed to an acute 
tip, about 5.8-5.8 em. long and 5.5 mm. wide near the 
base. Lateral sepals closely similar, about 5.9 ecm. long 
and 5 mm. wide below. Petals similar to the sepals, 
linear-lanceolate, about 5—-5.8 em. long and 5.4 mm. 
wide below. Lip much shorter than the other segments, 
oval-ovate or lanceolate-oval in outline when expanded, 
about 4.7-4.9 em. long and 2.9 em. wide across the mid- 
dle, acute, ecarinate, with the lower half gradually in- 
rolled in natural position, the margins being entire. 
Column minute, with an erect 8-lobed wing at the apex, 
about 6.5 mm. high at the back; lateral wings falcate- 
lanceolate and recurved ; middle wing low and irregular, 
abruptly extended in the center into a ligulate, apically 
truncate and denticulate projection; anther oblong- 
ellipsoid, 2-celled, with four narrowly oblong-ellipsoid 
pollinia in each cell. 
This species appears to have no near allies. In the 
whiteness of the flowers and in the apex of the column 
it resembles the widespread Brassavola nodosa (.) 
Lindl., but it lacks the elongated narrow serrated basal 
portion of the lip of that species. B. Perriniit Lindl., 
from Brazil, differs in having smaller green flowers, a 
somewhat carinate lip and dissimilar column-wings. 
Peru: Amazonas, La Peca, northeast of Jaen, at 1000 meters al- 
titude, on dwarf trees in dry “‘desert forest full of cacti,’’ flower uni- 
formly white, the lip having a median greenish yellow line above and 
ee, e eas 
beneath, interior parts ... pale green save the whitish column and 
the two formations immediately below, which are whitish with a brown 
[ 61 ] 
