Minpanao: on trees in damp forest, Mt. Camates, Subprovince 
of Bukidnon, at 4000 feet altitude, July 9, 1920, Ramos & Edaiio 
38587. 
Mindanao. 
19. Thrixspermum ligulatum L.O. Williams sp. 
nov. 
Herba epiphytica. Caules 1-6 dm. longi, foliorum 
vaginis obtecti. Folia oblongo-ligulata, obtusa, retusa, 
valde coriacea, disticha. Inflorescentia valde elongata, 
pauciflora. Sepalum dorsale lanceolatum, acutum. Sepala 
lateralia late lanceolata, acuta. Petala anguste lineari- 
oblanceolata. Labellum trilobatum. Columna generis. 
An epiphytic herb with few roots. Stem 1-6 dm. 
long, covered with persistent leaf-sheaths, terete. Leaves 
distichous, oblong-ligulate, obtuse, usually retuse and 
somewhat unequal at the apex, 15-21 cm. long, 2.5-4.5 
em. broad, with the surface usually remaining vernicose 
in dried specimens. Peduncles much shorter than the 
leaves, (usually about one half as long). Inflorescence 
distichous, apparently few-flowered, having usually few- 
er than twelve floral bracts. Bracts of the inflorescence 
about 1 em. long, obtuse, with the upper margins com- 
pletely encircling the rachis, probably somewhat fleshy 
when fresh. Dorsal sepal lanceolate, acute, about 30 mm. 
long and 8 mm. broad. Lateral sepals broadly lanceolate, 
acute, about 30 mm. long and 18 mm. broad, with the 
widest part near the base. Petals linear-lanceolate, acute, 
about 25 mm. long and 6 mm. broad. Lip 3-lobed, about 
20 mm. long; lateral lobes oblong, about 5 mm. long; 
mid-lobe lanceolate, about 12 mm. long, acute, apparent- 
ly thickened ; sac rather shallow, with a small bifid callus 
in the orifice. Column characteristic of the genus. 
Thrivspermum ligulatum is apparently most closely 
allied to 7. elongatum Ames and to T.rostratum Ames, 
[ 93 | 
