ORCHIDACEtE 



25. Dendrochilum (§Platyclinis)grandiflorum ^cM?-. in Fedde 

 Rep. 8 : 563. Origin not surely known. 



26. Dendrochilum (§ Acoridium) hastatum Ames Orchida- 

 cetE 2 : 99. 



MlNDORO. 



27. Dendrochilum (§ Acoridium) Hutchinsonianum Ames Or- 

 chidace^e 2 : 96. 



MlNDORO. 



28. Dend7~ochilum (§ Acoridium) irigense sp. nov. AfT. Z). pumilo 

 Reichb. f., in habitu aff. D. Hutchinsonio. Radices elongate, ra- 

 mosae. Pseudobulbi graciles, fusiformes, in sicco valde rugosi, 

 flavidi, 15-47 mm. longi, superne fastigati, monophylli, conferti, 

 juniores vaginis brunneis obtecti. Folium oblongi-lanceolatum, 

 acuminatum, acutum, utrinque attenuatum, conspicue 3-5 ner- 

 vosum, cum petiolo 6-15 cm. longum, usque ad 2 cm. latum, vix 

 proteranthum. Racemus sublaxus, ±10 florus, erectus, ±5 cm. 

 longus. Scapus gracilis, circiter 1 dm. longus. Bracteas inflores- 

 centia? 5 mm. longEe, glumacese, rigidas. Pedicellus cum ovario 

 2.5 mm. longus. Flores circiter 12 mm. in diametro. Sepala later- 

 alia lanceolata, acuta, trinervia, 6 mm. longa, prope basim 3 mm. 

 lata, membranacea. Sepalum dorsale oblongi-ellipticum, obtu- 

 sum, 6.5-7 mm. longum. Petala ovato-elliptica, acuta, trinervia, 

 6 mm. longa, 3.5 mm. lata. Labellum trilobatum, lobus medius 

 quam lobi laterales longior; lobi laterales semicrescentiformes 

 vel falcati, obtusi, 1.5 mm. longi, .75 mm. lati ; lobus medius fere 

 2 mm. longus, lobos laterales excedens, trilobatus, lobuli laterales 

 rotundati, lobulus medius triangulus fere 1 mm. longus, circiter 

 .5 mm. latus; calli 3, papilliformes, unus ad basim lobi lateralis 

 utriusque, unus in media partis saccatse labelli, prope basim lobi 

 medii. Columna ut in D. pumilo. 



[58] 



