S2,4 Ames, and Quisumbing: Philippine Orchids, IV 459 
to 4 cm wide. Racemes axillary, drooping, many-flowered, 20 
to 30 cm long. Flowers very fragrant, pure white, fleshy and 
waxy, about 20 mm across. Pedicellate ovary 13 to 15 mm 
long. Sepals and petals spreading. Lateral sepals suborbi- 
cular-ovate, rounded at the apex, 10 to 11 mm long, 7 to 8 mm 
wide 7-nerved. Dorsal sepal suborbicular-oval, broadly obtuse, 
7.5 to 9 mm long, about 7 mm wide, 5-nerved. Petals subor- 
bicular-obovate, minutely acute at the rounded apex, 8.5 to 9.5 
mm long, 5.5 to 6.5 mm wide, 5-nerved. Labellum 3-lobed; 
lateral lobes erect, oblong-semiorbicular, oblique, about 7 mm 
long, 6 mm wide; middle lobe concealed by the lateral lobes, 
lanceolate, incurved, about 8 mm long. Column short, stout, 
erect, with the foot 8 to 10 mm long. Anther ovoid; pollinia 
subglobose. 
Luzon, Manila, Mrs. Remedios C. Gonzales’s gardens, Bur. Sci. 
85573 Eduardo Quisumbing, October 26, 1932. 
The plants were originally collected by Mr. Aleko Lilius at 
an altitude of 100 to 130 meters in the hills of Calayan Island, 
Babuyan group, north of Luzon. 
This variety differs from the species in its white flowers, more 
compact racemes, and more distichous leaves. This extremely 
rare orchid is remarkable for the elegance of its spikes of pure 
white, very fragrant flowers, which lasted for over a month. 
Since its appearance at Mr. W. F. G. Farmer’s 4 place in Non¬ 
such Park, Cheam, England, in 1862, this is the first time it 
has been shown in Manila, and apparently the second in the 
world. 
Genus LUISIA Gaudichaud 
LUISIA CORDATILABIA sp. nov. Plate 3, figs. 9 and 10; Plate 6, figs. 26 to 33; Plate 
14, fiBr. 2. 
Herba epiphytica. Caules adscendentes, simplices (ver ra- 
rissime ramosi), 30 ad 80 cm alti, 5 ad 6 mm in crassitudine. 
Folia teretia, 9 ad 13.5 cm longa, 4 ad 5 mm in crassitudine, 
basi ad vaginas rigidas articulata. Inflorescentiae oppositifo- 
liae; pedunculus circiter 2 cm longus; rhachis crassa; bracteae 
rigidae, cucullatae, usque ad 4 mm longae. Flores carnosi, ri- 
gidi, 1.8 ad 2 cm lati, bracteis triangularibus, acutis, persisten- 
tibus subtenti; pedicellus cum ovario 12 ad 13 mm longus. Se- 
Pala lateralia valde navicularia, carinata, oblique lanceolata 
vel ovato-lanceolata, acuta vel subacuta, circiter 11 mm longa, 
5 mm lata, 3-nervia. Sepalum dorsale lanceolato-oblongum, ob- 
4 Williams, Orchid Grower’s Manual ed. 7 (1894) 90. 
