guished from all species of Dendrochilum known to the 
author, by the black or brownish pubescence on the 
leaves, sheaths, flowering scape and sepals. 
Borneo: Gunong Temabok, Upper Barami Valley. At 3000 feet 
altitude. November 8, 1920. Moulton 6763 (Type in Herb. Ames No. 
48305). 
Pholidota gracilis L.O. Williams sp. nov. 
Herba tenella, epiphytica, usque ad 4 dm. alta. Folia 
linearia, acuta vel acuminata, nervosa, sub apice paulo 
constricta. Pedunculus gracilis, foliis aequalis; racemus 
distichus, pauciflorus, laxus; bracteae oblongo-ovatae, 
obtusae, scariosae. Sepalum dorsale late lanceolatum, 
acutum, trinervium, naviculare. Sepala lateralia ovato- 
lanceolata, acuminata, paulo obliqua, trinervia. Petala 
lanceolato-rhombica, acuta, trinervia. Labellum sacca- 
tum, trilobatum, supra medium bicallosum ; lobi laterales 
erecti, oblongi; lobus medius late lanceolatus, acutus, 
recurvatus. Columna generis. 
A slender epiphytic herb up to 4 dm. tall. Pseudo- 
bulbs small, more or less cylindric, monophyllous, up to 
2 cm. long. Leaves linear, acute or acuminate, several- 
nerved, somewhat constricted just below the apex, up 
to 80 cm. long and 1 em. broad. Peduncle slender, as 
long as the leaves; raceme distichous, few-flowered, rather 
lax, about 6 cm. long; flowers alternate, about 4 mm. 
apart; bracts oblong-ovate, obtuse, scarious, striated, 
about 5 mm. long and 3.5 mm. broad. Dorsal sepal 
broadly lanceolate, acute, 8-nerved, navicular, about 4 
mim. long and 2 mm. broad. Lateral sepals ovate-lanceo- 
late, acuminate, slightly oblique, 8-nerved, about 5 mm. 
long and 2—2.5 mm. broad. Petals lanceolate-rhomboid, 
acute, 3-nerved, about 4 mm. long and 1.5 mm. broad. 
Lip saceate, 3-lobed, with two prominent calli just above 
the mid-lobe, the calli free and forming mammillae at 
their lower points; lateral lobes erect, oblong, length 
[ 59 | 
