— 80 - 



truncata et utrinque in lobulum minutum obtusum dilatata, c. 0.22 cm. 

 lata. Stigma breviter suburceoliforme, margine inferiore leviter 31obuliim. 

 Pes gynostemii cum ovario aiigulum acutum faciens, leviter sigmoideus, 

 linearis, canaliculatus, canalicula apicem versus altiore et costis 2 limitata, 

 bene 0.9 cm. loiigus. Ovarium obconicum, ôsulcatum, c 0.45 cm.longum; 

 pedicellus tenuior, c 0.4 cm. longus. 



Sumatra: Ophir districts, Taioe. (W. Groeneveldt, cuit, sub n. 393). 

 Agam, Boekit Batoe Bantiiig. (W. Groeneveldt, cuit, sub n. 1783). 



Naar D. Derryi Ridl. and D. viriditepalum J. J. S. From D. Derryi it 

 differs in tlie ovate sepals, the mentum which is much shorter, the erose 

 petals, and the twolobed blade of the lip, and from D. viriditepalum in 

 the blunter sepals, the shorter claw and longer blade of the lip, the quite 

 différent keels. 



Description from materials preserved in alcohol. 



,Bracts purple with green dots. Pedicel and ovary olive green suf- 

 fused with purple. Sepals outside light green, fiiiely striped purple, inside 

 light brownish green. Petals greenish white, apical half whiter, apex somewhat 

 tinted purple. Lip white, beneath with or without a violet dot. Column 

 greenish creamy white, with shining yellowish brown auricles, anther 

 yellowish white." (E. Jacobson). 



Dendrobium (sect. Calcarifera) gras tidi oi des J. J. S. n. sp. 



Caules elongati, c. 1 m. iongi, internodiis ad c. 3.5 cm. longis, superne 

 sensim ad c. 0.9 reductis. Folia patentia, sublinearia, apicem versus sensim 

 longe et auguste angustata, acuta, nervis c. 7 sicco distinctis, sicco te- 

 nuiter papyracea, ad c. 15 cm. longa, 1.3 cm. lata, superne sensim decre- 

 scentia; vaginae tubulosae, internodia multo superantes. Inflorescentiae ad 

 nodos caulium defoliatorum, brèves, c. 3—4 florae, pedunculo c. 0. 3—0. 4 cm. 

 longo, basi nonnullis vaginulis brevibus donato, rachide c. 0. 6—1 cm. longa. 

 Bracteae pedicello adpressae, oblongo-triangulae, acutae, concavae, ad c. 

 0.45 cm. longae. Flores majusculi, teiieri. Sepalum dorsale oblongo-ovatum, 

 apicem versus angustatum, auguste .obtusum, basi 5nervium, c. 2.1 cm.lon- 

 gum, 0.95 cm. latum. Sepala lateralia lacinia oblique oblonga ad pedem 

 gynostemii decurrentia, mentum reversum cum pede gynostemii angulum 

 acutum faciens rectum obiongum lateraliter compressum lateribus convexum 

 apice breviter obtuse contractum c. 0.95 cm longum formantia, oblique 

 oblonga, vix ovata, apicem versus angustata, subobtusa, 7nervia, costa média 

 dorso incrassata, c. 2.25 cm., tota 3.3 cm longa, basi 1.5 cm. metientia, 

 parte antica basi 95 cm. lata. Petala oblique oblongo-elliptica, apice an- 

 gustata, subobtusa, superne erosa, 3nervia, c. 2.5 cm. longa, bene 1 cm. 

 lata. Labellum simplex, spathulatum, 7nervium, costis 2 longitudinalibus 

 parallelis latis planis canalicula angusta sejunctis '^ partem laminae aequan- 

 tibus in unguem decurrentibus et in unguis parte inferiore in unam ap- 

 pendicem liberam e basi lata ligulato-subulato-icuminatam obtusam convexam 



