ORCHIDACE^ 



tooth on each side acutely or obtusely triangular; middle lobe 

 semi-orbicular, sharply bilobed; auricles about 1.1 mm. long, 

 deltoid, obtuse. Column less than 1 mm. long, two-winged. 



Great variability is manifest in this species especially in leaf 

 proportions and lip characters, the middle lobe of the lip show- 

 ing a wide range of variation. The tendency toward inequality 

 and lack of uniformity in the teeth of the lip is noticeable in the 

 type only. 



MalcLJcis variabilis is a near relative of M. oculata (Reichb. f.) 

 O. K., which, however, has much shorter elliptic leaves, differ- 

 ently shaped lip, and yellow instead of purple flowers. M. am- 

 plectens (J. J. Sm.) A. & S. has much more numerous leaves and 

 a differently formed lip, while 31. xanthochila (Schltr.) A. h S. 

 has more elliptic leaves and different details of lip. (Plate 88.) 



Clemens 156 shows a set of plants that are much more slen- 

 der than those of the type, with smaller leaves and little larger 

 flowers with large auricles. The Haslam collection exhibits a 

 much more robust form than the type with large flowers and 

 leaves up to 13.6 cm. long. The material from Sarawak (Native 

 Collector 1946), although closely matching other collections, 

 shows smaller less acuminate leaves than those of the type. 



KiNABALU, Haslam^ July-August 1916. Kiau, Clemens 75 (Type), No- 

 vember 1915. 3000 feet altitude. Flower wine purple; Clemens 156, No- 

 vember 1915. Flower and stem purple, white end on column, purple fringe 

 to lip ; Clemens IS If., November 1915. 3000 feet altitude. Flower and stalk 

 purple. Sarawak, Native Collector 194.6. 



20. OBERONIA Lindl 



Heretofore sixteen species of this genus were recorded from 

 Borneo, twelve of these being endemic. Four species, which are 

 new, are herewith described from Mount Kinabalu. 



I. Oberonia afifinis A. c^ S. sp. nov. Radices numerosae, 



[79] 



