456 
The Philippine Journal of Science 
1933 
author is still growing in the Bureau of Science orchid house, 
and has flowered twice already this year (February 3 and May 
31, 1932), the flowers lasting about two weeks. 
A species with the habit of P. Lueddemanniana Reichb. f., 
differing conspicuously in its yellowish flowers with absolutely 
no bars on the sepals and petals, and in the form of the middle 
lobe of the labellum. 
Genus AERIDES Loureiro 
AERIDES JARCKIANUM Schltr. Plate 3 , fig's. 1 and 2; Plate 6, figs. 1 to 8; Plate 13, 
fig. 1. 
Aerides jarckianum Schltr. in Orchis 9 (1915) 53, t. 5, figs. 15-21; 
Ames in Merr. Enum. Philip. FI. PL 1 (1925) 420; Summerhayes 
in Bot. Mag. 155 (1932) t. 927U- 
Aerides sp. Schltr. in Orchis 9 (1915) 29, in dos. 
Aerides recurvipes J. J. Sm. in Bull. Jard. Bot. Buitenz. Ill 8 (1926) 
63. 
The original description reads as follows: 
Aerides Jarckianum Schltr. n. sp. 
Planta epiphytica, habitu A. rubescenti (Rolfe) Schltr. similis cui affinis, 
c. 20 cm. alta; foliis loratis illis Rhynchostylidis retusa Bl. similibus, sed 
latioribus et minus carinatis; racemis leviter decurvis, dense multifloris, 
c. 25 cm. longis; cylindraceis; pedunculo c. 10 cm. longo; bracteis reflexis, 
ovatis subacutis, ovario rnulto brevioribus; floribus adscendentibus vel sub- 
erectis in racemo decurvo, glabris, roseis, illis A. rubescentis (Rolfe) 
Schltr. similibus, c. 1 cm, diametientibus; sepalo intermedio suborbiculari, 
apiculato, concavo, c. 5 mm. longo, lateralibus oblongis obtusis, c. 6 mm 
longis obliquis; petalis late et oblique ovalibus obtusis, sepalo intermedio 
patilulo brevioribus; labello trilobo, c. 6 mm. longo, lobis lateralibus in- 
curvis, oblique oblongis, obtusiusculis, intermedio antico incurvo, ligulato, 
apice obtuse tridentato, lateralibus plus duplo longiore calcare oblique 
conico, leviter arcuato-protuso, subacuto, c. 8 mm. longo, columna brevi 
generis, pede subduplo longiore incrassato, medio longitudinaliter foveolato, 
c. 3 mm. longo, ovario pedicellato subviscido, glabro, pedicello gracili in- 
cluso c. 1.7 cm. longo. 
Stems curved or recurved, terete, 30 to 35 cm long. Leaves 
lor ate, recurved, leathery, thinner than those of Aerides quin- 
quevulnerum Lindl., 12 to 20 cm long, 2 to 3 cm wide, unequally 
bilobed at the apex, slightly carinate on the back. Racemes 
subpendulous, densely many-flowered, 10 to 15 cm long, with 
their peduncles 30 to 50 cm long; sheaths remote, tubular, ovate, 
obtuse, up to 13 mm long. Flowers odorless, 12 to 13 mm 
across, 1,8 to 19 mm long; bracts ovate, acute, reflexed, up to 
6 mm long. Pedicellate ovary slender, 14 to 16 mm long. Lat¬ 
eral sepals convex, suborbicular, subtruncate or broadly round¬ 
ed at the apex, about 7 mm long, 6 mm wide, 7-nerved. Dorsal 
