14, angustatum 
o. Lip indistinctly 3-lobed; calli 
two 
16. subulatum 
A, Inflorescence distichous (Subg. Orsidice) 
a. Leaves amplexicaul; sepals and petals oval or ovate 
17. amplexicaule 
a. Leaves not amplexicaul; sepals and petals broadly lanceolate 
or usually linear 
b. Leaves linear to linear-lanceolate, not more than | cm, broad 
18. linearjfolium 
b. Leaves not linear to linear-lanceolate or if so much broader 
than 1 cm. 
c. Upper margins of the bracts free from the rachis 
d. Inflorescence half as long as the leaves or less; sepals 
broadly lanceolate 
19. ligulatum 
d. Inflorescence exceeding the leaves in length; sepals linear 
22. acuminatissimum 
c. Upper margins of the bracts adnate to the middle of the ra- 
chis 
d. Lateral sepals oblique at the base; a rare species 
20. rostratum 
d, Lateral sepals not oblique at the base ; a common species 
21. elongatum 
1. Thrixspermum comans J.J. Smith in Bull. 
Dépt. Agric. Ind. Néerl. 13 (1907) 61; in Fedde Repert. 
5 (1908) 800; in Bull. Jard. Bot. Buitenz. 6 (1924) t. 18, 
fig. II. 
This species had been described (in manuscript) as a 
variety of 7°. bieristatum Ames. Our specimens agree 
with those from Java cultivated and determined as 7" co- 
mans by J.J.Smith, as well as with his published figures. 
Samar, Mindanao; also Java. 
la. Thrixspermum comans J. J. Smith var. bi- 
cristatum (Ames) L.O. Williams comb. nov. 
Thrivspermum bicristatum Ames Orch. 5 (1915) 202. 
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