a mid-lobe which varies from broadly truncate-obtuse to 
lightly retuse as specified in 27. sceptrum. In these plants 
the pseudobulb is entirely enveloped by distichous 
sheaths (like the immature stems of J”. Helenae):; the 
leaves are oblong to elliptic-oblong, and shining in the 
dried specimen, and they attain a length of almost 50 
em. and a width of nearly 6 em. The scape is about 60 
em. or less tall, as in J’. Helenae, whereas that of LZ. 
sceptrum is noted as about 90 cm. tall. The pair of basal 
lamellae on the lip appear to be sometimes more or less 
recurved, as in £7. sceptrum. 
It appears reasonable, therefore, to consider Hriopsis 
sceptrum as including the larger-flowered ’. Helenae. 
Peru: Loreto, Mishuyacu, near Iquitos, at 100 meters altitude, in 
forest, flowers brown-yellow, May—June, 1980, G. Klug 1351. 
Polycycnis muscifera (Lindl. & Paxt.) Reichenbach 
filius in Bonpl. 8 (1855) 218; in Walpers Ann. 6 (1863) 
618 ampl. C. Schweinfurth. 
Cycnoches muscifera (as musciferum) Lindley & Paxton 
in Paxton’s Flow. Gard. 8 (1852-58) 28, fig. 248. 
Since the original description of Cycnoches muscifera 
lacks vegetative characters and is largely restricted to 
brief floral details, supplemented by a telling figure, it 
seems worthwhile to append a complete description of 
this concept based on several recent Peruvian collections. 
Plant rather large. Roots fibrous, glabrous, rather 
slender. Pseudobulb pyriform-cylindric, unifoliate at the 
apex, clothed with evanescent sheaths, densely rugose 
when dry, 5 to over 6 cm. long. Leaf distinctly petioled ; 
lamina elliptic, acute, cuneate below, up to 37 em. long 
and 12 cm. wide, plicate: petiole 8-11.5 em. long, slen- 
der, channelled. Scape lateral, basal, suberect to arcuate, 
sublaxly to densely racemose above; peduncle provided 
with several remote close short sheaths, densely dark- 
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