ORCHIDACE^E 



gatus, foliis multo longior, gracilis, flexuosus, ad 3 dm. longus, 

 infra racemum pauci-bracteatus. Bractese inflorescentise rigidse, 

 triangulares, imbricatse, oblique ascendentes, valde acutae, con- 

 gests, circiter 4 mm. longae. Racemus usque ad 2 cm. longus. Flo- 

 res succedanei. Pedicellus cum ovario bracteis longior, circiter 8 

 mm. longus, gracilis. Sepala lateralia membranacea, lanceolata, ad 

 basim unguiculata, 7 mm. longa, 3.5 mm. lata, unguis oblongus. 

 Sepalum dorsale simile, sed angustius, 7 mm. longum, circiter 

 2.5 mm. latum. Petala membranacea, spathulata, subacuta, prope 

 basim attenuata, 6.5 mm. longa, circiter 2 mm. lata. Labellum 

 saccatum,trilobatum, lobi laterales oblongi, obtusi, circiter 2 mm. 

 longi, 1.5 mm. lati (porrecti?); lobus medius quam lobi laterales 

 multo major, triangularis, obtusus, 2 mm. longus, circiter 5 mm. 

 latus. Margo labelli antice fimbriatus, callus subcrescentiformis 

 in disco prope basim lobi medii. Saccus vix 3 mm. longus, valde 

 obtusus. Gynostemium circiter 2 mm. longum. 



Thrixspermum agusanense resembles somewhat closely T. par- 

 dale (Ridl.) Schltr.,but is very distinct from that species in detail. 



Mindanao, Province of Agusan, C. M. Weber lift, June 20, 1911. Epi- 

 phyte on shrubs along the Agusan River, 15 meters above sea level. 

 Flowers white with slight tinge of purple. 



3. Thrixspermum amplexicaule Rcichb.f. Xen. Orch. 2 : 121. 

 Luzon, Mindanao. 



4. Thrixspermum bicristatum sp. nov. Herba epiphytica usque 

 ad 1 dm. alta. Caulis ± 6 cm. longus. Folia disticha, anguste ob- 

 longa, valde coriacea, 4.5 cm. longa, ± 5 mm. lata. Vaginas foliorum 

 caulem obtectae, persistentes, laxe adpressae, ± 1 cm. longae, rigidas. 

 Pedunculi glabri,graciles,suberecti, folia excedentes, cum racemo 

 usque ad 6 cm. longi, pauci-bracteati, bracteis tubularibus arete 

 adpressis. Racemus ± 1 cm. longus, dense bracteatus. Bractese 



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