360 CII. LABIATE (BAKER). | Acrocephalus. 
deeply bilabiate, lips oblong. Corolla pale lilac, three times the length 
of the calyx. 
Upper Guinea. Gold Coast: Adofi, Krause ! 
Nile Land. British East Africa: Bongo; Sabbi River, Schweinfurth, 2640! 
Uganda, in grass land, Wilson, 44! 
Mozamb. Dist. (rerman East Africa: Usui, 4200 ft., Speke § Grant, 139! 
17. A. lagoensis, Baker in Kew Bulletin, 1895, 152. A perennial, 
with erect densely pubescent stems. Leaves many, sessile, linear, 2-3 
in. long, dentate, deflexed, moderately firm, pubescent on both surfaces. 
Heads many, globose, } in. diam., forming dense terminal corymbs ; 
basal bracts ovate or rhomboid, pale throughout, densely pubescent ; 
flower-bracts orbicular-cuneate, densely pilose. Calyx densely pilose, 
4 in. long. Corolla glabrous; tube slender, rather longer than the 
calyx; lips small. 
Upper Guinea. Interior of Western Lagos, Rowland ! 
18. A, Buettneri, Giirke in Engl. Jahrb. xix. 198. Stem branched, 
erect, clothed with long silky adpressed hairs. Leaves lanceolate, acute, 
narrowed to a very short petiole, 13-2 in. long, entire or obscurely 
toothed, deflexed, densely clothed on both sides with long yellowish 
adpressed silky hairs. Heads subglobose; outer bracts 3-4, deltoid or 
lanceolate-deltoid, acuminate, silky, 4} in. long; flower-bracts ovate or 
rhomboid-apiculate, longer than the calyx, pilose ; pedicels 3 lin. long. 
Calyx in fruit ,4, in. long, clothed with long hairs; upper lip entire, 
rounded at the apex ; lower 3-toothed. Corolla white; tube twice the 
length of the calyx, 
Upper Guinea. Togoland: near Bismarckburg, Biidtner, 304! 
19. A. callianthus, Briquet in Engl. Jahrb, xix. 169. Annual. 
Stems erect, much-branched, 1}-2 ft. long, thinly clothed with short 
spreading bristly white hairs. Stem-leaves shortly petioled, oblong- 
lanceolate, crenate, 2—3 in. long, thinly hairy on both sides. Heads 
corymbose at the end of the branches, crowded, globose, 4—} in. diam: ; 
basal bracts ovate, pale at the base; flower-bracts orbicular-cuspidate, 
% in. long and broad. Fruit-calyx } in. long; tube strongly ribbed ; 
lips oblong. Corolla twice as long as the calyx.— A. zambesiacus, Baker 
ex Giirke in Engl. Pfl. Ost-Afr. C. 348. 
Mozamb. Dist. Portuguese Eust Africa: Quilimane, Scott! Makua; Namuli 
Hills, Last! Unangu to Lake Shirwa, Johnson, 283! British Central Africa : 
Nyasaland; Shire Highlands, Buchanan, 87! Manganja Hills, 3000 ft., Kirk! 
Meller ! near Blantyre, Last ! Mount Chiradzulu, 4000 ftt., Whyte ! North Nyasa, 
Whyte! and without precise locality, Buchanan, 403! 424! 
20. A. prealtus, Briquet in Engl. Jahrb. xix. 168. Perennial. 
Stem erect, much-branched, 3-4 ft. long, slightly hairy. Leaves distant, 
petioled, oblong, crenate, subcoriaceous, subscabrous above, bristly with 
raised veins beneath, 2-3 in. long. Heads many, laxly corymbose ; 
globose, 4} in. diam. ; basal bracts small, ovate, green; flower-bracts 
