TAB. 61. 



Tribe Ophrydeae. 



Sub-tribe Habenarieae. 



Genus Plataxthera. 



Platanthera tenuior, Schlcchter, in Beibl, zu En(jl. Bot. Johrhuch, 

 Xo. 50, Bd. sx, p. 12 (1895). — Herba glabra erecta, 15-35 cm. alta; 

 caulis erectus foliosus ; folia plura ovato-lanceolata acuta erecta, 

 2-5-3*5 cm. longa ; spica sublaxa 6-15-fl., bracteis foliaceis flores 

 parum superantibus ; sepala lateralia oblique lanceolata subfalcata 

 obtusa erecto-patentia, 7 mill, louga ; sepalum impar lanceolatum 

 concavum erectum aequilongum ; petala erecta oblonga, oblique torta, 

 obtusissima, miuute creuulata basin versus dorso columnae adnata, 

 sepalis aequilouga ; labellum ovatum obtusissimum, margine decurvo 

 creuulato, sepalis aequilongum, calcare cylindrico obtuso incurve 

 laminam excedeute ; columna erecta, antherae loculi paralleli, ros- 

 telli plica interjecta, glandulis subapproximatis. [Ex exempli, phir. 

 exsicc.) Brachycorythis tenuior, Ueichenhachjil. in "Flora" for 1865, 

 p. 183; Otia Bot. Hamh., p. 104 (1881); Habenaria tenuior, X E. 

 Broun, in Ganl. Chron., vol. xxiv, p. 307 (1885). 



Hab : South-east Region ; Natal : between Maritzburg and 

 Bisbopstowe, alt. 600 met., fl. Jan., J. Sanderson, No. 1046!; 

 Inanda, Jan., Wood, No. 714! Trans-Yaal Eepublic : Strydpoort, 

 Makapansberg, Eehmann, No. 5390! 



Plate 61. Fig. 1, odd sepal ; 2, side sepals ; 3, petals ; 4, lip, side 

 view ; 5, ditto, viewed from above, all the foregoing magnified about 

 3 diameters ; 6, column, with petals, front view ; 7, column only, — 

 magn. about 6 diameters. 



A glabrous erect herb, 15-35 cm. high ; stem erect leafy ; 

 leaves several ovate-lanceolate acute erect, 2*5-3*o cm. long; 

 spike somewhat laxly 6-15-fl., bracts leaflike, but little longer 

 than the flowers ; side sepals obliquely lanceolate subfalcate, 

 obtuse erect-spreading ; odd sepal erect lanceolate concave ; 

 petals erect oblong obliquely twisted, very obtuse, minutely 

 crenulate, adnate to the back of the column near the base ; lip 

 ovate very obtuse, margin decurved and crenulate, spur cylin- 

 drical obtuse incurved, — all the segments about 7 mill, long; 



