ORCHIDACEiE 



triangular, probably flattened laterally in life, without dividing 

 membranes or raised veins on the inner walls. The labellum might 

 be described as three-lobed, with the middle lobe divided and the 

 divisions adherent to the lateral lobes. But this is hardly a cor- 

 rect description, as the structure of the labellum does not warrant 

 it. What I have termed the anterior member of each lateral pair 

 of lobes may be an extraordinarily developed lamina ; that it is 

 so seems very probable, as the anterior margin of the posterior 

 member of each pair joins the middle lobe and together with it 

 forms a continuous boundary within which the anterior mem- 

 ber of each pair of lateral lobes is contained, appearing like a 

 callus arising from the throat of the fleshy sac or spur. 



That this species belongs to the genus Saccolabium seems very 

 probable, but in view of the differing opinions regarding generic 

 limitations in the group, future studies may prove that I have 

 not interpreted its characters properly. The flowers open, more 

 or less, at the same time on a thickened clavate rhachis. 



From the description of Saccolabium sarcochiloides Schltr. 

 this species must be a near ally, but the flowers as shown by the 

 plate published by Schlechter are structurally dissimilar from 

 S. Escritorii. 



The specimens from Mount Mariveles collected by Dr. Cope- 

 land are smaller than the type, but exhibit the same peculiarities 

 in floral structure. The lateral lobes of the labellum are purple 

 and erect. 



Luzon, Province of Tayabas, Guinayangan, L. Escritor Bur. Set. £0733, 

 March 8, 1913. Province of Bataan, Mount Mariveles, Buena Vista Peak, 

 E. B. Copeland s. n. November 23, 1907. In moss on trees. Flowers white, 

 slightly fragrant, centre of flower purplish. 



3. Saccolabium Loheri sp. nov. Epiphyticum, habitu S. rho- 

 palorrhachis J. J. Smith. Caulis abbreviatus, dense foliosus, circi- 



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