9. Thrixspermum Vanoverberghii 4 mes in Phil- 
ipp. Journ. Sci. 8 (1918) Bot. 488. 
Thriespermum Vanoverberghu, according to my con- 
ception of it, rests on the type specimen, Vanoverbergh 
1792. The collections (Vanoverbergh 632, 1091 and 
1531) cited by Ames in Merrill Enum. Philipp. Flow. 
Pl. 1 (1925) 406 as referable to 7°. Vanoverberghu belong 
in reality to 7°. eatmium L. Wms. and 7’ integrum L. 
W ms. which were undescribed at the time when Ames 
published his conclusions. 
Luzon. 
10. Thrixspermum agusanense Ames Orch. 5 
(1915) 201. 
An easily distinguished species. 
Leyte, Mindanao. 
11. Thrixspermum Amesianum L. O. Williams 
sp. nov. 
Herba epiphytica. Folia oblongo-elliptica, obtusa, in 
sicco valde rugosa, disticha, valde conferta. Inflorescentia 
densiflora, spicata. Sepalum dorsale ellipticum, obtusum, 
trinervium. Sepala lateralia oblongo-lanceolata, paulo 
obliqua. Petala anguste oblonga, obtusa. Labellum tri- 
lobatum; lobi laterales leviter arcuati; lobus medius tri- 
angularis, pubescens. Columna generis. 
An epiphytic herb with numerous fibrous roots. Stem 
5 cm. or more long (mostly 10-20 cm. long), terete, 
covered with persistent leaf-sheaths. Leaves distichous, 
mostly less than 1 cm. apart, oblong-elliptic, obtuse 
(sometimes obliquely obtuse), more or less rugose when 
dry, 3-6 cm. long, 0.5—-1.5 cm. broad. Peduncle sub- 
equal to the leaves in length. Inflorescence spicate, dense- 
ly flowered, about 0.5-4 em. long. Bracts of the inflo- 
rescence subulate, mostly 8-5 mm. long. Dorsal sepal 
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