158 CXXXIII. ORCHIDEX (ROLFE). [ Listrostachys. 
3 lin. long. Petals similar to but a little smaller than the sepals. 
Lip broadly triangular-ovate, acuminate, as long as the petals, 24 lin. 
broad; spur slender, 2-2} in. long, ascending. Column rather 
slender, 2 lin. long; anther crested, oblong, retuse, hyaline, 1 lin. long, 
3 lin. broad ; stipites of pollinia subparallel, filiform ; rostellum trifid ; 
middle lobe a little shorter than the side.—Angraecum englerianum, 
Krinzl. in Engl. Jahrb. vii. 333; xvii. 61, t. 4. 
Upper Guinea. Cameroons: Mungo, Buchholz. 
16. L. muscicola, Rolfe. Stems short, stout, about 5-leaved ; roots 
very thick. Leaves linear, conduplicate, rigid, 5-3} in. long; apex 
obtuse or obscurely bilobed. Scapes suberect, 5—6-flowered, 3-5 in. 
long. Bracts broadly ovate, obtuse or apiculate, 3-34 lin. long. 
Pedicels 8—9 lin. long. Sepals ovate-lanceolate, subobtuse or apiculate, 
34-4 lin. long. Petals slightly smaller than the sepals. Lip broadly 
rhomboid-ovate, apiculate, 4 lin. long; spur slender, 24 A in. long. 
Column short; rostellum long, slender, bifid.—Aéranthus muscicola, 
Reichb, f. in Flora, 1865, 190; Mystacidiwm muscicolum, Durand & 
Schinz, Conspect. Fl. Afr. v. 54. 
Lower Guinea. Angola: Pungo Andongo; rocks of Tunda,Quilombo, Welwitsch, 
699 ! 
17. L. rhipsalisocia, Xolfe. Stems short, with stout roots. 
Leaves equitant, recurved, linear, subacuminate, 5-54 in. long. 
Racemes 24-34 in. long, recurved, about 10-flowered, secund. Bracts 
very broadly ovate, cucullate, obtuse or apiculate, 14-2 lin. long. 
Pedicels 2 in. long. Sepals lanceolate, acute, 4 lin. long. Petals 
slightly smaller than the sepals. Lip ovate-lanceolate, acute, broader 
than the petals ; spur stout at the base, tapering and strongly hooked 
above, 5 lin. long. Column stout; stipites of pollinia distinct, slender ; 
gland broadly rounded.— Angraecum rhipsalisocium, Reichb. f. in Flora, 
1865, 189. 
Lower Guinea. Angola: Golungo Alto; in the primeval woods of Sobato de 
Quilombo, Welwitsch, 662! (not 692 as quoted by Reichenbach). 
18. L. Wittmackii, Rolfe. Stems 2 lin. broad. Leaves very 
thick, distant, ovate or oblong; apex more or less unequal; apices of 
lobes }-2 lin. apart, obtuse; sheaths rugose, with black hairy warts; 
limb of leaf nearly three times as long as the internodes. Inflores- 
cence 2-flowered, opposite the leaves and much shorter, with some very 
short scales at the base. Pedicels pilose with black hairs. Flowers 
2} lin. diam., spreading. Sepals ovate, acute, sparsely pilose outside 
with black hairs; dorsal slightly longer than the lateral. Petals as 
long as the sepals, but about half as broad, linear, acute. Lip linear ; 
apex triangular, acute; disc with a pair of fleshy calli behind the orifice 
of the spur ; spur straight or slightly curved, 5 lin. long. Column nearly 
globose, very short.—Angrecum Wittmackii, Kränz), in Mitth. Deutsch. 
Schutzgeb. ii. (1889), 158; Durand & Schinz. Conspect. Fl. Afr. 47. 
Upper Guinea. Cameroons, Braun, 2. 
