556 J. J. SMITH. ORCIIIDACEAE. 



_ Dendrobium ostrinum J. J. S. in Bull. Dép. Agric. Ind. néerl. n. XXXIX (1910); 10; Krzl in 

 Ptianzenr. Heft 45, 361. 



Tab. XCa. 



Gaules elongati, flexuosi, sectione transversa elliptici, c. 40 cm. longi vel plus, inlernodiis 

 c. 3.5 — 5 cm. longis ad 0.36 cm. latis. Folia oblonga vel lanceolata, apice obtusa plus minusve 

 inaequali-biloba, supra in utraque parte costae mediae supra sulcatae subtus plus minusve 

 obtuse prominentis convexa, basi obtusa, carnosa, supra nitidula atroviridia, subtus opaca 

 violacea, c. 5.5 — 7 cm. longa, 2 — 1.85 cm. lata; vaginae tubulosae, sectione transversa ellip- 

 ticae, apice lamina opposita dente obtuse instructae, in sicco costatae et transversa rugulosae. 

 Inflorescentiae latérales, abbreviatae, biflorae, basi squamis brevissimis cinctae. Flores médiocres, 

 ephemeri, pulchre violacei, c. 1.6 cm. lati, 2.4 cm. longi, sepalis petalisque incurvis. Sepalum 

 dorsale lanceolatum, acutum, 7 — 9 nervium, c. 1.65 cm. longum. Sepala lateralia lanceolata, 

 falcatula, acuta, concava, dorso carinata, 7 — 9 nervia, c. 1.65 cm. longa, basi 0.6 cm. lata. 

 Petala lanceolata, falcatula, leviter acuminata, acuta, 5 — 7 nervia. Labellum erectum, curvatum, 

 3-lobum, concavum, intus inter lobos latérales costa longitudinali alta dorso plana dilute 

 aurantiaca basin versus angustata et intensius colorata ad basin lobi intermedii terminante 

 donatum, callo verrucoso ad basin in utraque parte costae, ceterum intus transverse lamellatum, 

 expansum c. 0.74 cm. longum, 0.6 cm. latum ; lobi latérales gynostemium amplectentes, 

 elongati, oblique sublineares, apice dentati vel lacerati, c. 0.275 cm, longi, o. i cm. lati; lobus 

 intermcdius triangulus, obtuse acuminatus, apice recurvus, margine laceratus, inferne pluribus 

 lamellis angustis erectis ornatus, dilute violaceus, apice albescens, c. 0.34 cm. longus, 0.4 cm. 

 latus. Gynostemium conicum, c. 0.325 cm. longum, filamento subulato, auriculis obtusis con- 

 cavis. Anthera cucullata, antice plana, apice truncata et erosula, c. G. 125 cm. lata. Pollinia 

 4, oblonga. Stigma longitudinaliter ovale. Pes gynostemii cum ovario angulum subrectum 

 faciens, brevis, truncatus, albus, apice macula aurantiaca ornatus, c. 0.3 cm. longus. Ovarium 

 obconicum, 6-sulcatum, cum pedicelli brevi c. 0.55 cm. longum. 



Niederl. Neu-Guinea: An dem Noord-Fluss, auf Baumen im Urwalde der Ebene (Von Rômer 

 n. 567 u. 568, bl. im Oktober 190g: sùdlich des Geluks-Hûgels (Rachmat 1909, leb. Pfl., kult. 

 in Hort. Bog. unter n. 45 R.). 



Die Art gehôrt zu den Vervvandten des D. pruinosiiiii T. et B. von Neu-Guinea, den 

 Kei-Inseln und Ambon, und D. ritgosuni Lndl. von Java. 



Die htibsche, purpurviolette Farbe ist in der Sektion selten. 



' Dendrobium planum J. J. S. var. collinum J- J- S. — D. coUinum J. J. S. in Bull. Dép. Agric. Ind. 

 nccrl. XXXIX (1910), S; Krzl. in Pflanzenr. Heft 45, 360. 



Tab. XCb. 



Gaules valde compressi, c. 0.33 cm. lati, internodiis c. 2.1 — 2.3 cm. longis. Folia lan- 

 ceolata, basi semitorta et brevissime contracta, apice late biloba, costa média supra sulcata, 

 coriacea, c. 3.7 — 5.6 cm. longa, 0.75 — i.i cm. lata; vaginae tubulosae, valde compressae, 

 apice truncatae et leviter transverse rugulosae, internodia vix breviores, ad c. 0.5 cm. latae, 

 basin versus angustatae. Inflorescentiae vaginam ad basin perforantes, abbreviatae, basi vaginis 

 membranaceis cinctae, 2-florae, pedunculo c. 0.25 cm. longo. Bracteae minimae. Flores 

 médiocres, pallide flavo-virides, extus nitidi c. 1.6 cm. diam. Sepalum dorsale erectum, superne 



