ORCHIDACEiE 



on three branches and spring from a small scarious membranous 

 sheath. R. S. Williams 1934, which Kriinzlin referred to Den- 

 drobium papilio Loher, appears to belong here. It has the same 

 habit as D. multiramosum and a very similar labellum. D. Blumii 

 Lindl. and D. tenuicaule Hook. f. are near allies, but differ in 

 habit and in the lobing of the labellum. In the specimen col- 

 lected by Williams there are no rootlets on the lateral branches. 



Luzon, Rizal Province, W. S. Lyon 1^2 (Hb. Ames 10893), January. 

 Flowers lasting only one day, pale greenish yellow, lateral lobes of the 

 labellum streaked with reddish-brown lines inside. Altitude 100-200 

 meters. 



48. Dendrobium O'Brienianum Kranzl. in Gard. Chron. 

 (1892) 71:266. JD. striatum Hort. Gard. Chron. (1905) 2 :382 is 

 probably the variety of D. O" Brienianum to which a reference 

 was made in the Orchid Review (1894) 286. Mr. R. A. Rolfe 

 informed me, in a letter dated December 24, 1905, that this is 

 undoubtedly the variety striatum of D. O'Brienianum. Kriinz- 

 lin referred D. striatum to the imperfectly known species in his 

 monograph. This species is known to me through cultivated 

 specimens only. In my herbarium there is a specimen from F. 

 Sander & Sons said to have been sent by Micholitz from Luzon. 



49. Dendrobium ornithoflorum^ mes Orchidace^e 3 : 60, t. 46. 

 Mindanao. 



50. Dendrobium papilio Loher in Gard. Chron. (1897) 1 : 416. 

 D. Vanoverberghii Ames in Phil. Journ. Sci. 8 : 425, 1. 13. Shortly 

 after my description of Z). Vanoverberghii was published, Mr. A. 

 Loher informed me that it was conspecific with his D. papilio. 

 In April, 1914, 1 wrote to Mr. Loher and requested him to send 

 me a traced sketch of the type of his species, or a fragment, 

 or information as to herbaria in which the type or co-types could 

 be found. Up to April, 1915, no reply from Mr. Loher was re- 



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