260 The Philippine Journal of Science 1917 
laterales breves, erecti, basilares, trianguli, obtusangule falcato- 
recurvi, fere quadranguli, acuti, extus concavuli, intus medio 
prope marginem anticum callo brevi verticali erecto rotundato 
carnoso ornati, c. 0.25 cm longi, basi fere 0.3 cm lati; lobus in- 
termedius porrectus, elliptico-spathulatus, longius unguiculatus, 
apice contractus, obtusus, costa valida longitudinali carnosa con- 
vexa dimidio superiore magis elevata usque in apicem, glaber, 
carnosus, c. 0.87 cm longus, explanatus 0.375 cm latus. Gynos- 
-temium rectum, basi subtus contractum, c. 1 cm longum, apice 
producto triangulo, obtuso, c. 0.27 cm longo. Anthera magna, 
cucullata, antice alte obtusangule bilamellata, lateraliter visa 
oblique quadrangula, c. 0.43 cm longa. Rostellum reversum, 
bidentatum. Stigma maximum, alte excavatum. Ovarium pedi- 
cellatum, 6-sulcatum, c. 1.1 cm longum. 
AMBOINA, Hitoe messen, Reliquiae Robinsonianae 1627, October 18, 1913, 
on trees, altitude 600 meters. Flowers white with lilac spots. 
A few years ago but one species of Phalaenopsis was known from 
‘Amboina, the widely distributed Ph. amabilis Bl. In 1911 Ph. amboinensis 
J. J. Sm. was described from Amboina and Ceram and in the next year Finet 
published his Ph. Hombronii. One year later the unfortunate and lamented 
Doctor Robinson discovered two more species, the one above described, and 
Ph. Hebe Reichb. f. : 
Phalaenopsis amboinensis J. J. Sm., Ph. Hombronii Finet, and Ph. Ro- 
binsonii J. J. Sm. are closely allied species with hairless lips. Ph. amboi- 
nensis has the largest flowers, which, however, so far as I know, are borne 
in only 1- or 2-flowered scapes, while in the other two the inflorescences 
are branched and with more numerous flowers. In Ph. amboinensis and 
Ph, Hombronii the midlobe of the lip is provided with a conspicuous longi- 
tudinal denticulated keel, which is lacking in Ph. Robinsonii. 
The three species may be distinguished as follows: 
1. Midlobe of lip with a broad, longitudinal, smooth ridge. Sepals oblong. 
Column foot very short. Inflorescence branched, 
Ph. Robinsonii J. J. Sm. 
Midlobe of lip with a conspicuous ‘denticulated keel. Column foot 
distinct a 
2. Sepals ovate, 2.5 cm. long, 1.3 cm, and 1.47 em. broad. Lip 1.9 cm 
long. Inflorescence unbranched Ph, amboinensis J. J. Sm. 
Dorsal sepal lanceolate, 1.4 cm long, 0.8 cm broad. Lip 1.8 em long. 
Inflorescence branched Ph. Hombronii Finet. 
_PHALAENOPSIS HEBE Reichb. f. in Hamb. Gartenz. 18 (1862) 85. 
AMBOINA, Koeda mati, Reliquiae Robinsonianae 1620, September 38, 1913, 
epiphytic, altitude 15 meters. Flowers white, turning yellow when old, 
the base of the sepals with a band of brown dots inside, the lip and column 
mainly mauve purple, the tip of the lip white. Local name vanil ma- 
numpang. 
The flowers seem to differ a little in color from the Javanese and Su- 
matran specimens. The Amboina form might perhaps be distinguished as 
var. AMBOINENSIS. 
