908 BULLETIN DE L'HERBIER BOISSIER. (40) 



pius subsequantibus, superioribus perssepe ovario aequilongis; floribus in 

 genere mediocribus palentibus vel erecto-patentibus, sulphureis vel 

 aureis, inversis; sepalis lateralibus oblique ovato-lanceolatis subfalcatis 

 acutis concavis, erectis, 0,8-1,2 cm. longis, 0,5-0,7 cm. latis, sepalo inter- 

 medio cum petalis laxe agglulinatis deflexo, lanceolato vel lanceolato- 

 elliptico acuto; 1,1-1,5 cm. longo, medio 0,3-0,5 cm. lato; petalis 

 breviler unguiculatis lamina semihaslata, obtusiuscula, basi auriculata 

 obtusa, concavis, sepalo intermedio aequilongis, infra medium (expla- 

 natis) 0,4-0,6 cm. latis; labello erecto longe uuguiculato, lamina auricu- 

 lato-reniformi apice subacuto vel breviter acuminato, marginibus sub- 

 iocurvis, unguiculo 0,4-0,5 cm. longo, lamina 0,3-0,4 cm. longa, basi 

 0,5-0,6 cm. lata, exappendiculata ; antherse canalibus erectis c. 1. 0,3 cm. 

 longis; ovario cylindrico, 0,8-1,4 cm. longo. 



Ceratandra atrata Schinz et Durand., Conspect. Fl. Afr., p. 123 (1895). 



Ophrys atrata L., Mant. (1767), p. 121 ; Thbg., Prod. PI. cap. (1794), p. 2. 



Pterygodium atratumSvi., in Act. Holm. (1800), p. 218: Thbg., Fl. cap. 

 (1823), p. 24. 



Ceratandra chloroleuca Mund, ex Ldl., Gen. Spec. Orch. (1838), p. 364; 

 Baur, 111. Orch., t. 16; Bol., Orch. CapePenins. (1888), p. 193. 



Ceratandra auriculata Ldl., Gen. Spec. Orch. (1838), p. 364. 



Habitat in Africa australi. 



Loco incerto : Masson; Rob. Brown (1801); Mund (1817); Bergius 

 (Nov. 1816); Leibold (1838); Harvey. 



In regione austro-occidentali : In dunis arenosis planitiei capensis 

 inter Capetown et Wynberg, alt. 50-100 ped. — Eklon et Zeyher, Bolus; 

 In turfosis graminosisque monlis Tabularis, alt. 200-3500 ped., Oct.-Jan. 



— Eklon et Zeyher, Rehmann, n° 572, H. Bolus, n° 4546 (1879), Tb. 

 Kässner (1890), R. Schlechter, n° 125 (1891); In depressis planitiei montis 

 Piquetberg, alt. 2000-3000 ped., Nov. — Drège; In montibus supra 

 Dutoitskloof, alt. 3000-4000 ped. Dec. — Drège; In arenosis inter Grœne- 

 kloof et Saldanhabay, alt. infra 500 ped., Sept.-Oct. — Drège; In declivi- 

 bus montium Langebergen prope Zuurbraak, alt. 1500 ped., Oct. 1894 



— R. Schlechter, n° 5707; In clivis graminosis montium Langebergen 

 supra Riversdale, 900 ped., Nov. 1892 — R. Schlechter, n° 1727; In 

 graminosis montium Ouleniquabergen supra Montagu Pass, alt. 3500 

 ped., Nov. 1894 — R. Schlechter, n° 5811; In planitie prope George 



— Bowie; Prope Worcester, alt. 2000 ped., Nov. — Eklon et Zeyher. 



C. atrata unterscheidet sich von den beiden andern Arten der Sektion 

 Eu-Ceralandra durch die lockere, zylindrische Blütentraube und durch 



