ORCHIDACEA 
the narrow leaves constitute the most conspicuous differenti- 
ating character in the recognition of this species. 
Luzon, Bontoe Subprovince, Father M. Vanoverbergh 1197, March— 
May 1911; Vanoverbergh 2867, April 4, 1913. 1700 meters altitude; 
Vanoverbergh 3906, June-July 1914. 1700 meters altitude. Flowers white 
and yellowish-brown; Vanoverbergh 4041, 1916. 
Coelogyne quinquelamellata Ames sp. nov. Radices fibra- 
tae, ramosae; pseudobulbi diphylli, 4-9 cm. longi, anguste pyri- 
formes vel ampullacei, subtetragoni, prope basim +1.5 cm. in 
crassitudine, valde rugosi, juniores vaginis coriaceis acutis tecti. 
Vaginae distichae, in sicco rigidae, +5 cm. longae. Folia 10-30 
em. longa, 1.5—4.5 em. lata, oblongo-elliptica, utrinque attenuata, 
acuta, valde coriacea, in sicco nervosa, erecta, scapo longiora, 
breviter petiolata. Scapus erectus, rigidus, +3 dm. longus, initio 
foliis juvenilibus synanthus, versus antheseos finem hysteranthus, 
folia demum superans, basi nudus, multiflorus, compressus. Flores 
rubri, succedanei. Rachis flexuosa. Bracteae inflorescentiae elon- 
gatae, 2.5 cm. longae, glumaceae, lanceolatae, acutae, ovaria 
pedicellata superantes, cum floribus deciduae, super flores arc- 
tissime imbricatae. Sepala lateralia 11 mm. longa, +4 mm. lata, 
lanceolata, acuta. Sepalum dorsale 12 mm. longum, circa 7 mm. 
latum, ovato-lanceolatum, acutum, valde concavum, suberectum. 
Petala linearia, 9 mm. longa, 1 mm. lata, prope apicem atten- 
uata. Labellum simplex, 7 mm. longum, circa 1 cm. latum, trans- 
verse ellipticum, minute apiculatum, prope basim lamellis quin- 
que, obtuse triangularibus, erectis, 1-2 mm. longis, abbreviatis 
praeditum. Gynostemium arcuatum, apice late alatum. 
This very distinct species belongs to the section Longifoliae. 
It is at oncedistinguishable from all other members of the genus, 
heretofore reported from the Philippine Islands, by means of 
the five abbreviated lamellae at the base of the labellum. In 
