260 Fr. Kränzlin. — Orchidaceae-Monandrae-Dendrobiinae. Pars 1. 



(non F.Müll.) et (1886) II. 811; Wien. 111. Gart. Ztg. (1890) 339, fig. 68; Veitch, 

 Man. Dendrob. 59; Williams, Orch. Grow. Man. 7. ed. 34 8; Sander, Orch. Guide 41. 



— D. niveum Rolfe in Gard. Chron. (1891) I. 104. — Caules aggregati, elongato- 

 fusiformes, ad 25 cm alti, medio 1,5 cm crassi, pauciarticulati, vetustiores sulcati, 

 paucifoliati. Folia lanceolato-oblonga, obtusa, apice biloba, ad 15 cm longa, ad 3 cm 

 lata, mox decidua. Racemi ex axillis superioribus caulis gracilis elongati, ad 40 cm 

 alti, scapi tenues. Flores pauci, magni, bracteae minutissimae. Sepala ovato-lanceo- 

 lata, acuminata, apice plus minus reflexa, mentum sepalorum lateralium perbreve, bi- 

 lobum, rotundatum. Petala multo majora, rhombea, acuta, margine leviter undulata. 

 Labellum subaequilongum, lobi laterales oblique rhombei, antice rotundati, lobus inter- 

 medius productus, ovato-oblongus, acuminatus acutusve, callus antice bilobus in disco 

 pone basin. Gynostemium perbreve, stelidia membranacea, lobulata. — Flores pulcher- 

 rimi, nivei, 10 — 12 cm lati et lere 9 cm alti, lobi laterales labelli margine purpureo-violacei 

 itaque faucem violaceum in floribus candidis eföcientes, petala interdum 3 cm lata. — 

 Novembri. 



Papuanische Provinz: Neu-Guinea. South Cape (W. Micholitz!). — Austro- 

 malayische Provinz: Nord-Australien. Cape York-Halbinsel. 



Nota. R.A.Rolfe in »Reichenbachia« I.e. exposuit, quibus causis nomen D. Johnsoniae 

 F. Müll, nomini Reichenbachiano praeferendum esset, quae quidem omnia recte observata sunt. 



504. D. bigibbum Lindl. in Paxton, Flower Garden III. 25 (1852) c. xyl. 245 

 [N. E. III. 87 c. xyl. 230]; Bot. Mag. t. 4898; Warner, Sei. Orch. PI. II. t. 8; Flore 

 d. serres t. 1143; Reichb. f. in Walp. Ann. VI. 302; Floral Mag. 2. ser. t. 386; 

 Orch. Alb. I. t. 38; Bateman, 2 d Cent. Orch. PI. t. 169; Illustr. hortic. XXX. t. 476; 

 Örchidophile (1891) 2 08; F. Müll. Fragm. VI. 119; Veitch, Man. Dendrob. 23; Garden. 

 World VI. 73; Williams, Orch. Grow. Man. 7. ed. 327; Sander, Orch. Guide 67. — 

 Var. albo-marginatum Lindenia VII. t. 317; Williams 1. c. 328; Sander 1. c. 67. — 

 Var. superbum Flor. Mag. 2. ser. t. 229; Williams 1. c. — Caules leviter fusiformes, 

 30 — 45 cm alti, vix 8 mm diam. infra cataphyllis vestiti, supra foliosi. Folia pauca oblongo- 

 lanceolata v. lanceolata, acuta, 5 — 12 cm longa, 2 — 3 cm lata, biennia, coriacea. Racemi 

 pseudoterminales, graciles, erecti, pluriflori, 25 — 30 cmlongi; bracteae parvae. Sepalum 

 dorsale oblongum acutum; lateralia antice similia sed latiora, postice in mentum subito 

 multo angustius subulatum contraeta, basi tuberculo instrueta. Petala spathulato-ob- 

 ovata v. suborbicularia, multo majora, brevi-acutata. Labelli lobi laterales semiobovati, 

 ineurvi, antice rotundati; lobus intermedius paulo minor, oblongus, antice retusus; calli 

 v. lineae elevatulae per discum plures, in basi lobi intermedii desinentes, supra papillosae. 



— Flores purpurei, 4,5 cm diam., petala 2 cm lata, labellum intensius purpuratum, 2 cm 

 longum, 2,5 cm latum, protuberantiae in basibus sepalorum albae 2 mm longae. 



Papuanische Provinz: Austral. Inseln. Neu-Guinea. Thursday Isl. (Dr. Cop- 

 pinger!); Cape York Penins. (Hann!). 



Var. candidum Reichb. f. ; Williams 1. c. — Differt floribus candidis. 



Nota. Varietates supra commemoratae formae merae sunt ab hortulanis noniinibus a 

 typo distinetae, botanicis tarnen cum typo congruunt. 



505. D. Sumneri F. Müll. Fragm. VI. (1867—68) 94; Benth. Fl. austral. VI. 

 278. — Caules 50—55 cm alti, sed certe altiores, 1 — 1,3 cm crassi, multiarticulati, 

 teretiusculi, sulcati, foliosi. Folia lanceolata, 8 — 10 cm longa, chartacea. Racemi 

 congesti, multiflori, longe peduneulati, 15 — 2 cm longi, rhachis flexuosa, bracteae 

 minutae, pedicelli 6 — 9 mm longi. Sepalum dorsale ovato-lanceolatum acutum, lateralia 

 subaequalia, postice mentum breve saccatum formantia. Petala obovato-oblonga, ob- 

 tusa, aequilonga. Labellum e basi latiore angustatum, deinde trilobum, lobi laterales 

 parvi, rotundati, intermedius subquadratus v. transverse oblongus, papillae minutae pone 

 basin lobi intermedii in disco, lineae per discum medianae paulum elevatae. — Flores 

 rosei, sepalum dorsale 1,3 cm longum, lateralia fere 1,6 — 1,8 cm longa, mentum 5 mm 

 longum, petala aequilonga, labellum subbrevius eodem colore, lobus intermedius intensius 

 coloratus. — Mihi non visum. 



