\ \ 4 Pfitzer-Kränzlin. — Orchidaceae-Monandrae-Coelogyninae. 



59. D. Williamsii (Oakes Arnes) Pfitz. — Acoridium Williamsii Oakes Arnes 

 in Proceed. Biol. Soc. Washington XIX. (1906) 143; Orchidaceae II. ined. (1907) t. 22, 

 I. 1 . — Pseudobulbi caespitosi, fusiformes, basi cataphyllis maculatis vestiti, monophylli, 

 7,5 cm longi. Folia linearia, stricta, transsectione triangula, acuta, ad 25 cm longa, 



1 mm crassa. Scapus fere omnino folio circumdatus, quam folio brevior, spica disticha, 

 pendula multiflora, 7 cm longa, 5 mm diametro, bracteae glumaceae quam ovaria longiores. 

 Sepalum dorsale oblongum, lateralia latiora ovato-lanceolata, omnia acuta. Petala 

 rhombiformia v. oblanceolata acuta. Labellum trilobum, lobi laterales falcati, incurvi, 

 obtusi, majores quam lobus intermedius oblongus, obtusus, calli in basi labelli 3. 

 Gynostemium perbreve, utrinque brachio minutissimo instructum, Capsula ignota. — 

 Bracteae 2 mm longae; flores 2 — 3 mm diam. viridi-albi, sepala 3 mm longa 1,5 mm 

 lata, petala aequilonga 1 mm lata, labellum (lobus intermedius) 1 mm longus, lobi 

 laterales longiores. — Septembri. — Fig. 38$. 



Monsungebiet, Provinz der Philippinen: Luzon, Prov. Benguet bei Trinidad 

 (Williams n. 1939). 



Nota. Differt a D. [Acoridio) tenello cui proximum, foliis strictis transsectione triangulis, 

 floribus majoribus, labelli fabrica. Anthesis spicarum ab apice basin versus descendens, quod 

 rarius occurrit. 



60. D. graminifolium (Oakes Arnes) Pfitz. — Acoridium graminifolium Oakes 

 Arnes in Proceed. Biolog. Soc. Washington XIX. (1906) 144 et Orchidaceae II. (1907) 

 ined. t. 22, II. 2. — Pseudobulbi anguste fusiformes, cauliformes, monophylli, dense 

 caespitosi, vetusti profunde rugosi, 7 — 8 cm longi. Folia linearia , energice venosa, 

 basi in petiolum fere aequilongum angustata, ad 30 cm longa 2 — 3 mm lata. Scapi 

 tenues, • parte inferiore folii vaginante fere omnino circumdati, quam folia breviores; 

 spica densa, disticha, 4 — 5 mm longa; bracteae glumaceae flores omnino vestientes 



2 mm longae. Sepala lanceolata (dorsale angustius), acuta trinervia. Petala lanceolata 

 late unguiculata. Labellum trilobum, formam literae E referens, lobi laterales oblongi, 

 cuneati, apicem versus dilatati, extus auriculo minuto instructi, lobus intermedius oblongus 

 mucronulatus, callus transversus in ipsa basi, addito utrinque 1 laterali et 1 minuto 

 medio in disco. — Bracteae 2 mm longae, flores 2 mm diam. subclausi; sepala 4,5 mm 

 longa 2 mm lata, petala 3 mm longa 1 mm lata, labellum brevius quam latum, 

 gynostemium quam 1 mm brevius. — Flores vivi lutei, suaveolentes , sicci fusci. — 

 Octobri, Novembri. — Fig. 38ü?. 



Monsungebiet, Provinz der Philippinen: Luzon, Prov. Benguet, zwischen 

 Suyoc und Panai in 2100 m ü. d. M. (Merrill n. 4764); Distr.l^Lepanto, Berg Data 

 (Merrill n. 4594). 



Nota. Differt foliis petiolatis, floribus carnosulis luteis a plerisque, fabrica peculiari labelli 

 ab omnibus affinibus. 



61. D. tenuifolium (Oakes Arnes) Pfitz. — Acoridium tenuifolium Oakes Arnes 

 in Proceed. Biol. Soc. Washington XIX. (1906) 145 et Orchidaceae II. (1907) ined. t. 

 IV. 4. — Pseudobulbi fusiformes dense aggregati, graciles, 1,5 — 2 cm longi, monophylli. 

 Folia linearia, acuta, 3 — 12 cm longa, 2 — 4 mm lata, petiolus 1,5 cm longus, dorso 

 carinata, in petiolum contracta. Scapi quam folia breviores , flexuosi , bracteae Ovaria 

 excedentes, 2 mm longae et latae. Sepala e basi triangulari lanceolata, acuta. Petala 

 lanceolata, paulum breviora, acuta. Labellum trilobum, lobi laterales oblongi, erecti 

 obtusi, lobus intermedius minutissimus, medio in disco saccatus, apice incrassatus, carnosus ; 

 calli in disco 3, medianus in ipsa basi, laterales in sinu loborum lateralium cum lobo 

 intermedio. — Petiolus 1,5 cm longus, flores albi (distichi?), sepala 3 mm longa, 

 1 mm lata, petala 2 mm longa, 1 mm lata, labellum mülto brevius. — Octobri. — 

 Fig. 38 0, Q. 



Monsungebiet, Provinz der Philippinen: Luzon, Distr. Lepanto; Berg Data 

 in 2300 m ü. d. M. (Merrill n. 4576). 



Nota. Ab affinibus statura minore et labelli fabrica satis diversa propius accedit ad D. 

 Acoridium) tenue et parvulum. 



