TAB. 53. 



Tribe Vaxdeae. 



Sub-tribe Sarcaxtheae. 



Genus Angraecum. 



Angraecum tridentatum, Harvey, Thes. Cap., vol. ii, ^;. 6 (186B), 

 subt. 108. — Caulis ramosus striatus, 10 cm. loDgus vel ultra, 3 mill, 

 crassus, ramulis cylindricis flexuosis pendulis laxe foliatis ; folia 

 patentia semicylindrica, superne medio depressa, liuea unica per- 

 cursa, acuta curva, 2-3 mill, crassa, 5-10 cm. longa ; Acres parvi 

 axillares, pedunculis saepius 2-3-fl., 2-1 mill, longis ; sepala lateralia 

 patentia ovato-lanceolata acuta basi subcordata, impar ovatum acutum, 

 omuia circa 3 mUl, longa ; petala paullo breviora cuneata acuta apicem 

 versus unidentata vel Integra; labellum patens sepalis aequilongum, 

 circumscriptioue lanceolatum, basi lobulis biiiis obtusis crassiusculis 

 erecto-incurvis, apice trilobum, lobis lateralibus brevibus subulatis, 

 intermedio multo majore triangulari acumiuato, calcare cylindrico 

 recto peudulo, 6-7 mill, lougo ; columna brevis ; rostellum basi late 

 ovatum deinde angustatum truncatum ; glandula unica ovata, stipite 

 rhomboideo-obcuneato, polliniis approximatis spbaeroideis. {Ex exempli, 

 plur. viv. exsiccatisque.) 



Hab: South-eastern Region; Natal: in Kransliloof, on jutting 

 rocks, alt. 800 met., fl. Dec-Jan. (1862), J. Sanderson, No. 562 ! in 

 herb. Trin. Coll. Dublin ; Zululand, near Etsbowe, collected by 

 R. Maxwell, flowered in greenbouse near Cape Town, Dec. 1893, 

 No. 6319 in my berb. 



Plate 53. Fig. 1, flower, front view; 2, ditto, side view; 3, one 

 of tbe side sepals ; 4, odd sepal ; 5, one of tbe petals ; 6, column, with 

 lip, front view, the spur partly cut off; 6 a, ditto, side view ; 7, upper 

 part of column, with anther ; 8, apex of the rostellum, detached ; 

 9, 10, pollinarium ; 11, section of a leaf, — all variously magnified. 



A glabrous epiphytal herb ; stem branched striate ; branches 

 flexuous pendulous laxly leafy ; leaves semicylindical, depressed 

 on the upper surface and traversed by a single slender line, acute 

 curved or straightish, 2-3 mill, in diameter, 5-10 cm. long; flowers 

 small axillary, on 2-8-fl. peduncles, the latter 2-4 mill, long; 

 side sepals spreading ovate-lanceolate acute subcordate at base. 



