ly rugose sheaths which are leaf-bearing except through 
the lower portion of the branches. Leaves. distichous, 
ovate-, oblong- or elliptic-lanceolate, up to 16 cm. long 
and 4 em. wide, obtuse to rounded at the (commonly 
incomplete) apex, clasping by a sessile base, chartaceous, 
the leaves on the lower portions of the branches much 
smaller. Racemes terminal, arcuate or nodding, densely 
many-flowered almost to the base, with the rachis up to 
12 cm. long (incomplete in my specimen). Floral bracts 
linear-lanceolate, erect-spreading, much shorter than the 
elongate pedicelled ovary which is gradually dilated 
above and up to 4.9 cm. long. Flowers fleshy, green. 
Dorsal sepal oblanceolate-oblong, obtuse, 18-19.5 mm. 
long and 4.6 mm. wide, much thickened dorsally at the 
apex, 8- or indistinctly 5-nerved. Lateral sepals very 
obliquely oblong-oblanceolate, 18.8-21 mm. long, 5.7- 
6.5 mm. wide above, dorsally bluntly carinate-thickened 
and mucronate at the acute apex, 4- to 5-nerved. Petals 
obliquely spatulate-linear, obliquely truncate or obtuse at 
the apex, 17-19 mm. long, 3.7—4 mm. wide when ex- 
panded, with the upper margins minutely erose and revo- 
lute in natural position, 1-nerved throughout. Lip adnate 
to the column nearly to its apex; lamina sharply 8-lobed, 
deeply cordate at base, about 7.8 mm. long in the mid- 
dle and 10 mm. wide across the lateral lobes; lateral lobes 
small, spreading, dolabriform or obliquely round-ovate 
with the exterior margin truncate or broadly rounded ; 
mid-lobe much larger, subquadrate-ovate, bluntly apicu- 
late, 5.2 mm. long and about equally wide; disc at base 
bicallose and in front with three fleshy lines of which the 
middle one is longer and extends to the apex. Column 
about 15 mm. long, slightly dilated toward the apex. 
Kpidendrum elatum differs trom I. raphidophorum 
Lindl. in lacking imbricating spathes subtending the in- 
tlorescence. 
[ 90 | 
