S 2,4 Ames and Quisumbing: Philippine Orchids, IV 451 
The original description reads as follows: 
Cymbidium Dayanum, sp. n. 
Foliis longissimis (4 pedplibus), angustis (vix quartam pollicis latis) 
coriaceo-pergameneis apice nunc inaequali altero latere acutis, nunc aequal- 
iter bidentatis, inf erne suberosis; racemo plurifloro; vaginis scariosis acu¬ 
tis basi vaginato; rhachi angulata, bracteis triangulis acuminatis ovariis 
pedicellatis multo brevioribus, mento subevanido; flore carnosiusculo; se- 
palis linearibus acuminatis; petalis sublatioribus brevioribus, labello 
medio trifido, laciniis lateralibus semiovatis, acutangulis, lacinia media 
oblongo-triangula acuminata; carinis geminis parallelis approximatis 
velutinis, usque ad basin laciniarum lateralium altioribus, dein humilibus, 
ante apicem confluentibus. 
Plant epiphytic, erect, stemless. Leaves 5 or 6 , tufted, sub- 
coriaceous, pale green, elongate linear, sessile, channelled at the 
base, acute and suboblique at the apex, 76.5 to 78.5 cm long, 
1.1 to 1.4 cm wide. Racemes erect, about 24 cm long; peduncle 
about 11 cm long; sheaths at the base three or more, imbricated, 
1 to 7 cm long, acute, pinkish vinaceous, the lowermost one nearly 
white. Pedicellate ovary 1.5 to 3 cm long. Flowers fragrant, 
about 10, 3.5 to 4.5 cm across; bracts triangular, acute, cucullate, 
5 to 8 mm long. Lateral sepals spreading, elliptic-lanceolate or 
oblanceolate, acute and slightly subfalcate, 2.6 to 2.7 cm long, 
7 to 8 mm wide. Dorsal sepal erect, elliptic-lanceolate or 
oblanceolate, acute, 2.8 to 2.9 cm long, 7 to 7.5 mm wide. Pe¬ 
tals smaller than the sepals, connivent around the column, nar¬ 
rowly elliptic-oblong, acute, apiculate, 2.1 to 2.2 cm long, about 
6 mm wide. Labellum 3-lobed, 2 to 2.2 cm long; lateral lobes 
broadly obtuse, free portion 3 to 3.5 mm long; middle lobe ovate, 
apiculate, reflexed, 7 to 7.5 mm wide; lamellae two, stout, par¬ 
allel, conspicuously pubescent with white glandular hairs, end¬ 
ing abruptly with the lateral lobes, but continued to the middle 
lobe as raised lines. Column about 12 mm long. Anther 
broadly triangular-ovoid. Pollinia obliquely ovoid, compressed. 
Luzon, Benguet Subprovince, Baguio, Mrs. K. B. Day’s gar¬ 
dens, Bur. Sci. 85569 Eduardo Quisumbing, October 20, 1931. 
Living plants originally collected by Mrs. K. B. Day in Baguio, 
Mountain Province. 
The flowers are fragrant, the sepals and petals are white 
with a crimson central line which does not extend to their apices, 
the labellum is Bordeaux with oblique white and seafoam yellow 
lines on the lateral lobes and an amber yellow. The column 
is blackish red-purple; the anther sulphur yellow. Pedicellate 
ovary lumiere green. 
