338 ART. I. B. HAYATA : 



persistentibus 5 cm. longis. PaniculÊe laterales quasi- axillares 

 validinsculae recur vse ramosae, ramis 5-6 divaricatis validiusculis 4 

 cm. longis, bracteis minutis squamosis triangularibus. Flores parvi 

 1 cm. in diametro brève pedicellati flavo-viridescentes intus purpuras- 

 centes, pedicellis 2-3 mm. longis transverse divaricatis. Sepala libera 

 aequalia patentia carnosula obovato-oblonga 5 mm. longa 3^ mm. 

 lata apice obtusa. Petala sepalo angustiora 4 mm. longa 1§ mm. 

 lata apice rotundata postice reflexa. Labellum basi columnso 

 affixum continuum patens basi calcaratum, (calcari brève cylindraceo 

 3 mm. longo IJ mm. lato, ore antice lamina longitudinali semi- 

 diviso, ad os postice latereque calloso-appendiculato), 3-lobatum, lobis 

 lateralibus ad latus calcaris brevis auriculiformibus, lobo medio 

 latiusculo 3 mm. longo 5 mm. lato semiorbiculari apice rotundato 

 margine denticulate medio late calloso-ruguloso patente. Columna 

 brève oblonga subteres 2 mm. longa. Clinandrium truncatum. 



Hab. Formosa, leg. T. Uchiyama, 1899. 



Near S. formosanus Eolfe, from which the present plant is 

 distinguishable by the labellum which is trilobed, two lateral lobes 

 being very small, and the terminal one very large, broad, and denti- 

 culate on the margin. In S. formosanus R., the middle lobe of 

 the lip is again trilobed, while in this new species the middle lobe 

 is not lobed, but minutely denticulate. The present genus is se- 

 parated from Saccolabium (which has no plate in the spur), by 

 the longitudinal plate dividing the mouth of the spur ; also from 

 Cleisostoma which has a transversal plate covering the mouth of 

 the spur. 



Cleisostoma Blume. 

 Cleisostoma breviracema Hayata sp. nov. Herba epiphytica. 



