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The descriptions of sorae of the species of the section 

 Rliopalanthe witli more or less tiliforin leaves are insufficient for 

 comparison. Tlie form of the mentum and the column-foot, the 

 shape of the swollen basai part of the stems and especially the 

 f:>rm of the leaves are important features for discriminating the 

 species of this group. 



The species descrilied above differs, according to the description, 

 from D. kodeianiim Schltr., which also seems to hâve esulcate 

 leaves, by the form of the pseudobulbs, longer leaves, larger 

 tlowers, not elliptic petals, a ditferently shaped lip. The mentum, 

 column and column-foot of I). A'wc^ua;a<m hâve not been described. 



D. clavalor Ridl, according to Ridley synonymous with D. 

 melbtum liidl., differs by its channelled leaves and the midiolje of 

 the lip which is not notched at the apex. 



Description from living plants. 



i^eiKli'Ohîlini (sect. Khopalanthe) 4nroo(Êili£>iî J. J. 



S. n. sp. 



lîhi/.oma brève, ramosum. Cailles approximati, elongati, deinde 

 ramosi, supra basin tenui tereti in pseudobulbum fusiformen c. 

 1.4 cm. longum 0.7 cm. diam. incrassati, supra pseudobulbum 

 tenues, teretes, plus minusve flexuosi, foliati, c. 20 — 48 cm. longi, 

 internodiis c. 1.5 — 3.5 cm. longis. Folia patentia, recta, ^ubteretia, 

 tenuia, apice contracta, acuta, supra obtusangule canaliculata, 

 carnosula, nitidule viridia, c. 3.5 — 6.5 cm. longa, 0.13 — 0.14 cm. 

 diam , inferiora minora; vaginae tubulosae, teretes, virides, interno- 

 dia aequantes, c. 0.14—0.15 cm. diam. Inflorescentiae ad nodos 

 caulium foliatorum laminae oppositae, vaginam dorso ad basin 

 perforantes, fasciculares, squamis siccis c. 0.6 cm. longis cinetae, 

 paucillorae. Flores singuli expansi, aibi, cl — 1.2 cm. longi. Sepalum 

 dorsale ovatum, subacutura, dorso ad apicem leviter incrassatum, 

 c. 0.4 — 0.47 cm. longum, 26 — 0.275 cm. latum. Sepala lateralia 

 lacinia oblique triangula ad pedem gynostemii decurrentia, margine 

 antico basi breviter connata, mentum conicum obtusum incurvum 

 cum ovario angulum subrectum faciens c. 0.8 cm. longum formantia, 

 oblique triangula, acuta, saepe plus minusve conicoapiculata, c. 

 0.4 — 0.5 cm. longa, basi 0.775 — 0.83 cm. lata. Petala oblique 

 oblonga, obtusa, c. 0.4 — 0.45 cm. longa, 0.14 — 0.175 cm. lata. 

 Labellum pedi gynostemii parallelutn erectum, recurvum, basi 



