Acrocephalus. ] CII. LABIATH (BAKER). 359 
gested into whorls, linear, sessile, ascending, denticulate, 2-3 in. long, 
densely hairy on both sides. Heads densely corymbose at the end of 
the branches, globose, }-1 in. diam. ; basal bracts ovate or lanceolate, 
very hairy, white towards the base ; flower-bracts obovate-cuneate, very 
shaggy, 4 in. long. Flower-calyx very hairy, z'z in. long. Corolla twice 
as long as the calyx. 
Upper Guinea. Niger Territory : Nupe, common in swampy places, Barter ! 
14. A. venosus, Baker in Kew Bulletin, 1898, 160. Perennial. 
Stems erect, densely pubescent, 2 ft. or more long. Leaves opposite, 
sessile, lanceolate, erecto-patent, entire or obscurely denticulate, 2-3 in. 
long, ascending, densely pubescent, especially beneath. Heads densely 
corymbose at the ends of the branches, globose or oblong, } in. diam. ; 
basal bracts pale at the base; flower-bracts orbicular-cuneate, very 
hairy, {-4 in. long. Calyx 4 in. long; lips oblong, much shorter than 
the tube. Corolla-tube longer than the calyx ; limb short. 
Mozamb. Dist. German East Africa: on hills, in Karagwe district, 4000- 
5000 ft., Scott-Elliot, 7490! Portuguese East Africa: Lower Zambesi; Lake 
Nyatunga, near Shupanga, Kirk! British Central Africa: Nyasaland; North 
Nyasaland, Whyte! Manganje Hills, 3000 ft., Kirk! Shibisa (Chikwawa) to Tshin- 
muze, 2000-4000 ft., Kirk / Blantyre, Buchanan, 114! 132! and without precise 
locality, Buchanan, 266! 
15. A. coeruleus, Oliv. in Trans. Linn. Soc, xxix. 135, t. 133. 
Perennial. Stems 3—4 ft. long, much-branched, thinly hairy. Leaves 
congested into whorls, sessile, ascending, linear, obscurely denticulate, 
2-3 in. long, slightly hairy. Heads densely corymbose at the end of 
the branches, globose, } in. diam.; basal bracts many, large, ovate, 
white; flower-bracts orbicular-cuneate, hairy, } in. long. Calyx villous, 
t in. long; lips short, orbicular; lower emarginate. Corolla three 
times as long as the calyx. ' 
Wile Land. British East Africa; Ukidi, near water, Speke & Grant, 632! 
Kavirondo, on dry laterite, 4000 ft., Scott-Hiliol, 7153! 
South Central. Congo Free State: near Nyangwe, on the River Lualaba, 
Pogge, 1075 (var. genuinus, Briquet in Engl. Jahrb. xix. 166). Lunda: Lulua 
River, Pogge, 358 (var. trichosoma, Briyuet, loc. cit.). 
Mozamb. Dist. German East Africa: between Lake Tanganyika and Lake 
Rukwa, 6000 ft., Nu¢¢/ British East Africa: Urungu; Fwambo, 5200 ft., Nutt ! 
Carson, 8! 44! 45! Ninumkolo, Hore Bay, Carson! Nyasaland; Tanganyika 
Plateau, at Fort Hill, 3500-4000 tt., Whyte?! 
16. A, lilacinus, Oliv. in Trans. Linn. Soc. xxix. 135, t 184, 
Perennial. Stems much branched, 2-3 ft. long, densely hairy. Leaves 
congested into whorls with short internodes, linear-lanceolate, denticu- 
late, sessile, deflexed, 1-1} in. long, hairy on both sides. Heads in 
dense corymbs at the ends of the branches, globose, } in. diam. ; basal 
bracts large, ovate, pale, with foliaceous tips; flower-bracts orbicular- 
cuneate, cuspidate, greenish, pubescent, } in. long. Calyx 4 in. long, 
