12 III. ORCHIDE.E. [Platylepis. 



12. PLATYLEPIS A. Rich. ; Benth. & Hook. f. Gen. PI. iii. 

 p. 604. 



1. P. glandulosa Rchb. f. in Linna?a xli. p. G2 (1877); Rolfe 

 in n. Trop. Afr. vii. p. 184. 



P. cmyolensis Durand & Schinz, Consp. Fl. Afr. v. p. 58. 

 Diplogastra angolensis Welw. ex Rchb. f. in Flora 1865, p. 183. 



GoLUNGo Alto. — A herb a foot high ; roots fihform fleshy, stem 

 rooting below, leaves membranous ; flowers densely spicate, spike 

 ovate, bracts large, densely pilose glandular on the outside, flowers 

 white, subringent. Plentiful, but seen only in this one locality, in 

 very shady palm-groves on the banks of the river Delamboa. Habit 

 and mode of growth exactly that of our Gdoclijcra reptns. In fl. April 

 and May 1855. No. 672. 



13. POGONIA Juss. ; Benth. & Hook. f. Gen. PI. iii. p. 615. 



1. P. umbrosa Rchb. f. in Flora, 1867, p. 102 ; Durand & Schinz, 

 Consp. Fl. Afr. v. p. 59 ; Rolfe in Fl. Trop. Afr. vii. p. 186. 



Island of St. Thomas.— A herb sending out a large kidney-shaped 

 leaf from a whitish fibrous tubercle-bearing rhizome. In the very 

 shady primitive woods on the heights near Fazenda do Monte CafEe^ 

 about 1800 ft. Without flower. Dec. 1860. No. 739. 



2. P. purpurata Rchb. f. & Sond. ex Rchb. f. in Flora 1865, 

 p. 184 ; Bolus, Orchids of South Africa i. t. 12 ; Durand & Schinz, 

 I.e., p. 59. 



PuNGO Andoxgo. — Root tuberous, leaf radical, cordate-ovate, fleshy, 

 shining. Plentiful by streams in the woods at Quilongo. Without 

 fl. Jan., Feb., March, and April 1857. No. 738. 



Distinguished from P. umhro^a, in which it is included in Fl. Trop. 

 Afr. vii. p. 186, by its ovate not reniform leaf, which agrees with Bolus' 

 fisure cited above. 



Teibe IV. OPHRYDEjE. 

 14. HABENARIAWilld.; Benth. & Hook. f. Gen. PI. iii. p. 624. 



1. H. Welwitschii Rchb. f. in Flora 1865, p. 179; Durand & 

 Schinz, Gon.sp. Fl. Afr. v. p. 88 ; Kranzl., Orch. Gen. & Sp. i. p. 201. 



H. cataphysema Rchb. f. in Flora 1867, p. 101 ; Durand <fc 

 Schinz, I.e., p. 74 ; Kranzl, I.e., p. 217. 



HuiLLA.— A herb, 2 feet high, with two tubers, the younger stalked, 

 stem angular, straight, leaves herbaceous-green, lanceolate-linear, sepals 

 greenish, petals white, thinly membranous ; spur green, descending, 

 with a thickened club-shaped end. Bracts green. Ovary green, elon- 

 gated, club-shaped. Here and there in wet pastures by streams between 

 Lopollo and Humpata, In fl. Jan. 1860. No. 721. Flowers greenish, 

 buds reddish. Rather damp wooded pastures between Lopollo and 

 Ohai. In bud Feb. 18G0. No. 722. Tubers ovate-conical. Flowers 

 greenish, interior segments and lip filiform, cylindrico-subulate. Here 

 and there in lofty damp meadows of Morro deMonino. In fl. beginning 

 of April IHC.O. No. 743. 



I cannot distinguish the two Reichenbachian species included here. 

 No. 722 is a small plant with comparatively young flower-buds, and 



