MaberutHa.] Gxxxiii. orchide^ (rolfe). 229 



51. H. sequatorialis, Rendle in Jouim. Linn. Soc. xxx. 301. 

 Plant rather strong, about 20 in. high. Tuber ovoid, J in. long 

 Radical leaves 2, large, orbicular, 8 in. broad; cauline sheath-like below 

 distant, linear- lanceolate or lanceolate, 1 in. long, bract-like above, 

 acuminate, decreasing upwards into the flowering bracts. Spikes oval 

 or oblong, 2|— t in. long. Bracts lanceolate, acuminate, 7-9 lin. long. 

 Pedicels | in. long. Flowers 13 lin. diam. Dorsal sepal ovate, obtuse 

 5 lin. long ; lateral spreading, obliquely ovate, subacute, broader than 

 the dorsal, (> lin. long. Petals bipartite ; posterior lobe linear-falcate, 

 acute, 4^^ lin. long ; anterior lobe rather narrower than tlie posterior 



5 lin. long. Lip tripartite; side lobes linear-filiform, 5^- lin. long; 

 front lobe broadly linear, subacute, longer than the side lobes ; spur 

 18-20 lin. long, rather slender; apex acute. Stigmatic processes nearly 

 straight, clavate, Ih lin. long. Anther channels elongate, slightly 

 longer than the stigmas. Rostellum with a long, acute, triangular 

 apex, elongate above the rounded anther. 



XMEozamb. Dist. German East Africa : between Umyamwezi and the coast, 

 Taylor ! 



52. H. macrura, Krdnzl. ex Engl. Hochgeb. Fl. Trop. Afr. 183. 

 Plant Ij-lJ ft. high. Leaves 2, radical, suborbicular, obtuse, 1J-2J 

 in. long; sheaths oblong, subobtuse, decreasing upwards, sometimes 

 with one or two of the lower somewhat leaf-like. Racemes with 

 3-G large flowers. Bracts ovate, subacute, 7-12 lin. long. Pedicels 

 lJ-2 in. long. Dorsal sepal broadly ovate, cucullate, subobtuse, 5 J lin. 

 long ; lateral obliquely semiovate-oblong, subobtuse, 6 lin. long. Petals 

 bipartite; posterior lobe ovate, subobtuse, bh lin. long; anterior lobe 

 obovate-lanceolate, subobtuse, longer than the posterior. Lip trilobed, 

 from a short entire base; lobes broadly oblong, obtuse, 6-7 lin. long; 

 front lobe a little narrower and longer than the side lobes ; spur about 



6 in. long, filiform below, slightly thickened above. Stigmatic pro- 

 cesses clavate, slightly curved, 2J lin. long. Anther channels shorter 

 than the stigmas. Rostellum triangular-subulate, shorter than the 

 anthers. — Kranzl. in Engl. Jahrb. xvi. 152. 



liower Guinea. Congo : Stanley Pool, Calleivaert ! Angola : Malange, Mechow, 



53. H. thomana, Reichh. f. Otia Bot. Hamb. ii. 97. Plant li-2| 

 ft. high. Leaves radical, lanceolate or oblong-lanceolate, acute, attenuate 

 into a short, sheathing base, -I-IO in. long, 1J-2J in. broad. Racemes 

 6-12 in. long, lax, many-flowered. Bracts lanceolate or ovate-lanceolate, 

 acuminate, 7-12 lin. long. Pedicels 7-10 lin. long. Dorsal sepal 

 elliptic-oblong, obtuse, 2J-3 lin. long; lateral subobliquely ovute- 

 oblong, obtuse, 3-3J lin. long. Petals bipartite ; posterior lobe falcate- 

 linear, subobtuse, 3 lin. long, appressed to the margin of the dorsal 

 sepal ; anterior lobe triangular-subulate, acute, subfalcate, J-1 lin. long. 

 Lip tripartite; side lobes falcate-linear, gradually thickened upwards 

 and truncate, 8J-4 lin. long; front lobe linear-filiform, 3A-4 lin. long; 

 spur 6-8 lin. long, slender below, thickened above the middle, thence 



