270 Fr. Kränzlin. — Orchidaceae-Monandrae-Dendrobiinae. Parsl. 



a. Racemi ab ipsa basi divitiflori; labelli lobus intermedius 

 ovatus, acutus; carina in disco antica evanida. Flores 



inodori 520. D. speeiosum. 



b. Racemi laxiflori, labelli lobus intermedius bilobus, carina 



disci antice abrupta. Flores suaveolentes 521. D. delicatum. 



c. Ut praecedens sed caules potius cylindracei, quam lageni- 



formes, labelli lobus intermedius solidushamatusrecurvusque 522. D. falcorostrum. 



R. Caules ut in praecedente potius cylindracei basi ipsa tantum 

 incrassati, labelli lobi laterales in dentes reducti, labelli lobus 

 intermedius sensim dilatatus lanceolatus. (Planta minor v. 

 mediocris.) 523. D. Moorei. 



C. Plantae mediocres v. parvae, caules tenui-fusiformes v. cylin- 

 dracei, sulcati. pauci- rarius pluriarticulati ; folia parva non 

 longe persistentia, racemi folia aequantes v. rarius superantes; 

 flores modice v. non curvati lutei, rubri et varie signati. 



a. Sepala petalaque ovata v. oblonga non producta, 

 er. Labellum sepalis petalisque brevius. 



I. Labelli lobi laterales semiobovati, intermedius brevis, 



ovatus, antice glaber. Flores lutei, rubro-adspersi, 



caules cylindracei 52 4. D. gracilicaule. 



II. Praecedenti simile, sed flores rosei, labellum album, 



purpureo-signatum, caules basi incrassati; callus in 



dentes 3 exiens 525. D. Kingianum. 



III. Lobus intermedius labelli rhombeus, antice lamellis 

 3 crassis carnosis crenulatis instructus. Folia car- 



nosa, canaliculata 526. D. canaliculatum. 



IV. Labelli lobi laterales semioblongi, intermedius cor- 

 datus, antice tomentosus, caules cylindracei, folia 



tenera plana. Flores albi 527. D. Adae. 



V. Labelli lobi laterales semiorbiculares, intermedius 

 truncatus, carinula mox evanida in disco. Flores 



albidi; caules cylindracei 528. D. Jonesii. 



ß. Labellum longius quam sepala petalaque. 



I. Labelli lobi laterales semioblongi, intermedius reni- 

 formis, subcochleatus (margine incurvo), lamellulae 

 5 in disco. Flores viridi-lutei, labellum pallidius . 529. D. Bairdianum. 



II. Labelli lobi laterales semirhombei, intermedius pro- 

 funde bilobus. Flores flavidi 530. D. closterium. 



b. Sepala petalaque e basi lineari triangula, longe acuminata, 

 labellum ex ungue subito dilatatum, antice tridentatum. 



Flores ad 5 cm longi 531. D. odontochilum. 



c. Sepalum dorsale et petala subaequalia , sepala lateralia 



multo majora, labellum simplex, late cunealum . . . . 531 a. D. Micholitxii. 



520. D. speeiosum Smith in Exot. Rot. I. (1804) 17 t. 10; R. Rr. Prodr. 332; 

 Lindl. Gen. et Spec. Orch. 87; Rauer et Lindl. Illustr. Gener. t. 6; Reichb. f. Reitr. 

 48; Rot. Mag. t. 307 4; Rot. Reg. t. 1610; Renth. Fl. austral. VI. 279; Fitzger. Austr. 

 Orch. II. pt. 4 t. 9; Veitch, Man. Dendrob. 74 c. xylogr. — Huc D. Hillii Hook. f. 

 Rot. Mag. t. 5261; Williams, Orch. Grow. Man. 7. ed. 36 et Orch. Alb. V. t. 198; 

 Renth. Fl. Austr. VI. 1. c; Veitch, Man. Dendrob. 1. c. 74. — Caules e basi crassiore 

 attenuati, 10 — 30 cm longi, ad 3 cm crassi, quadriarticulati. Folia 3 — 4 in superiore 

 parte caulis oblonga ligulatave crassa, leviter undulata, 8 — 30 cm longa, acuta, 4 — 5 cm 

 lata, apice ipso subbilobula. Racemi pseudoterminales, ex axilla folii plerumque non 

 evoluti Orientes, multi- et densiflori, ad 40 cm longi, a basi ad flores usque vaginis 



