ORCHIDACEtE 



Flores purpurei. Sepala lateralia 3.5 mm. longa, 3.5 mm. lata, 



usque ad medium cohaerentia, late ovata, glabra, subacuta, tri- 



nervia. Sepalum dorsale simile, trinervium. Petala 1 mm. longa, 



plus minusve 1 mm. lata, cuneata, truncata,prope apicem minute 



verruculosa vel papillosa, margine apicali scabridula. Labellum 



plus minusve 1 mm. longum, prope basim 1 mm. latum, trulli- 



forme, obtusum, apice rotundatum, ecallosum. Columna minuta, 



utrinque in lobum spathulatum vel subrotundatum producta. 



Stelis Williamsii is a near ally of S. confusa Schltr., a Mexican 



species which is dissimilar in the column-lobes, in the structure 



of the labellum and in the differently shaped petals. The racemes 



suggest S. ciliaris Lindl., but the sepals are eciliate. 



Panama, Cana and vicinity, R. S. Williams 970, April 27, 1908. On 

 trees, flowers purplish. 2000-6500 feet altitude. 



THRIXSPERMUM Lour. 



Thrixspermum subulatum {Bl) Eeichb. f. Xen. Orch. 2 

 (1867) 122; J. J. Sm. in Fl. Buitenz. 6 (1905) 578, f. 434. Den- 

 drocolla subulata Bl. Bijdr. (1825) 291. Aerides subulatum Lindl. 

 Gen. & Sp. Orch. (1833) 241. Sarcochilus subulatus Reichh.f. in 

 Walp. Ann. 6 (1861) 500. 



This species has not been recorded from the Phihppines here- 

 tofore, although it is known to be a native of Java, Sumatra and 

 Ambon. 



Philippines, Luzon, Bontoc Subprovince, Mount Masapilid, M. Ramos 

 ^ G. Edano Bur. Sci. 37905, March 17, 1920. Epiphyte. Flowers yellow. 

 3000 feet altitude. 



Thrixspermum Weberi Ames sp. nov. Caules radicantes, 

 plus minusve 15 dm. longi, usque ad 5 mm. in crassitudine, va- 

 ginis foliorum tecti. Radices ramosae, fibratae. Vaginae foUorum 

 usque ad 12 mm. longae, valde complanatae, coriaceae, rigidae, 



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