Listrostachijs] iii. orchide^, 11 



the green gynandrium, with subfleshy membranous white bracts. 

 Outer perianth-leaves concave, forming with the inner a hood ; lip 

 descending. Ovary acutely angled, straight, not twisted. Bracts 

 broad, sheath-hke," dull-coloured, scarious. Plentiful on the lichen- 

 covered bark of Mimosas (Muzamba) in the Panda forests, near the 

 great cataract of the Cuanza, and on Calemba Islands. March 1857. 

 No. 677. 



9. MYSTACIDIUMLindl.;Benth. &Hook.f. Gen. PI. iii. p. 584. 



1. M. xanthopollinium Durand & Schinz, Consp. Fl. Afr. v. 

 p. 55 (1895); Rolfe in Fl. Trop. Afr. vii. p. 173. 



M. ei-i/thropoUinmm Durand & Schinz, I.e., p. 52. Aercmthus 

 xanthojwllinius'Rchh. f. in Floi^a 1865, p. 190. A. eri/thropoUinius 

 Rchb. f., I.e. 



GoLUXGO Alto. — Stem hard, woody, 3 to 5 ft. high ; leaves shining 

 above, glaucous-green beneath. Flowers in nodding racemes, 2 to 4 in. 

 long, looking as if made of white wax. Plentiful in dense woods, 

 covering the Adansonia stems with a thick beard : especially on river 

 banks. In fl. Cuango river, end of March 1 856. No. 665- Forming dense 

 thickets on the thicker branches of trees, with far-descending branches, 

 l)ranchlets and very long branching aerial roots. Flowers like wax, a 

 very pale sulphur-white, with but little scent. Primitive woods of 

 Mata de Pungo and near Cabondo. In fl. April 1857. No. 678- 



Tribe iii. NEOTTIE^. 



10. CORYMBIS Thou. ; Benth. & Hook. f. Gen. PI. iii. p. 591. 



1. C. Welwitschii Rcbb. f. in Flora 1865, p. 183 ; Durand & 

 Schinz, Consp. Fl. Afr. v. p. 56 ; Rolfe in Fl. Trop. Afr. vii. p. 180. 



Cazengo. — A terrestrial herb 2J to 3 ft. high, with the habit of 

 Cephalanthera. Stem hard, very" tough. Leaves almost always 

 •devoured or mutilated by insects, papery, dark green. Flowers whitish- 

 green. Outer perianth-segments herbaceous-green, linear-spathulate, 

 equal, the two inner of the same shape but whitish-green, all 

 membranous subflaccid ; column snow-white, rather fleshy. In very 

 lofty primEeval woods on Mt. de Muxaula, in especially shady places, 

 but very rarely met with. In fl. 17 June 1855. No. 668. In espe- 

 cially shady places on Mt. Cungulungulo, leaves only, 1 Feb. 1855. 

 No. 667. 



11. ZEUXINE Lindl.; Benth. & Hook. f. in Gen. PI. iii. p. 599. 



1. Z. africana Rchb. f. in Flora 1867, p. 103 ; Durand & Schinz, 

 Consp. Fl. Afr. v. p. 57 ; Rolfe in Fl. Trop. Afr. vii. p. 181. 



GoLUXGO Alto. — A span high, erect. Caudex subterranean, creeping, 

 fleshy, sending out cylindrico-clavate tubercules. Stem cylindrical, 

 reddish at the base, ringed with the bases of scales, becoming glaucous 

 above. Leaves linear, erecto-patent, glaucous, with a long-sheathing 

 base. Flowers whitish-green. Bracts foliaceous. Apparently very 

 rare in reedy boggy places on the banks of the Coaugo ; a single 

 specimen in flower, and a second with no flower at the end of 

 Feb. 1856. No. 669. 



