DendroLiuni. 139 



IL Mores atro-fusci, sepala 3 cm (intermedium 2,5 cm) 



petala 3,5 — 4 cm longa 251. D. strebloceras. 



y. Lobus intermedius ellipticus v. oblongus. 



I. Folia bene longiora quam lata, oblonga, racemi breves, 



pauciflori, petala valde torta 252. D. stratiotes. 



II. Folia paulo longiora quam lata, elliptica; racemi longi 



multiflori, petala non torta 253. D. veratrifolium. 



B. Taurina. 

 Petala quam sepala vix longiora v. utplurimum sesquilongiora. 



a. Labellum apice tantum trilobum. 



Carinae in disco 5 254. D. percnanthum. 



b. Labelli lobi laterales utrinque in lobulum parvum, obtusum 

 reducti. 



a. Carinae in disco 3, mediana sublongior, mox evanida . 255. D. taurinum. 

 ß. Carinae in disco 5, flores paulo minores quam in 255 . 255a. D. leporinum. 



c. Labelli lobi laterales trianguli, breves. 



a. Carinae in disco 3, mediana longior undulata . . . . 2 56. D. Burbidgei. 

 ß. Ut praecedens, sed labellum antice omnino ecallosum . 257. D. antelope. 



d. Labelli lobi laterales conspicui, gynostemium amplectentes. — 



Species subdubia 258. D. Rumphianum. 



C. Piatyp etala. 



Petala sepala vix v. non excedentia, ligulata v. lanceolata v. oblonga, antice vix 

 v. non dilatata. 



a. Racemi elongati, pluri-multiflori. 

 a. Labellum trilobum. 



I. Petala obovata divergentia, lobus intermedius labelli 



obovatus, linea mediana labelli brevior quam laterales. 2 59. D. Cogniauxianum. 

 II. Petala quam sepala subbreviora, lobus intermedius 



labelli ovatus, productus, lamella media longior quam 



laterales 259a. D. bandaensc. 



III. Petala late lineari-lanceolata, lobus intermedius labelli 



oblongus, obtuse acutatus 260. D. sylvanum. 



IV. Petala subspathulata erecta. 



\ . Lobus intermedius labelli orbicularis. Flores albi, 



amethystino-signati, 4 — 5 cm diam 261. D. AugustaeVictoriae. 



2. Ut praecedens sed flores lutei, 7 — 8 cm diam.. . 262. D. Jennyannm. 



3. Lobus intermedius labelli ovato-lanceolatus, acutus, 



flores 2 — 3 cm diam. viridi-lutei, labellum album. 263. D. affine, 

 ß. Labellum simplex v. vix divisum. 



Lobi laterales et intermedius ovati, obtusi, islhmo sub- 



nullo vix sejuncti . .' 264. D. polycarpum. 



b. Racemi pauciflori. 



dt. Caules basi crassi, fere pseudobulbosi. 

 I. Labellum indivisum. 



Petala obovato-oblonga, obtusa, plana 265. D. rigidifolium. 



II. Labellum trilobum. 



Petala ligulata, oblusiuscula 266. D. calophyllum. 



ß. Caules elongati, cylindracei v. fusiformes. 



I. Petala linearia, margine papulosa 2 67. D. bicaudatum. 



II. Petala latiora, margine glabra. 



Petala anguste cuneata, obovata 2 68. D. Rimannii. 



