Acrocephalus. | CII. LABIATE (BAKER), 361 
orbicular, pubescent, } in. long and broad, Calyx as long as the bract ; 
lips oblong. Corolla twice as long as the calyx. 
Lower Guinea. Angola: province of Huilla, Welwitsch, 5600 ! 
21. A. lippioides, Baker. Perennial. Stem slender, erect, densely 
pubescent, branched only at the top. Stem-leaves oblong-lanceolate, 
petioled, subcoriaceous, minutely crenate, glabrous above, pubescent 
beneath, the lower 5-6 in. long. Heads few, small, corymbose, globose ; 
basal bracts ovate or orbicular, pilose ; flower-bracts cuneate, } in. broad. 
Calyx nearly as long as the flower-bract. Corolla large for the genus, 
¢ in. long. Stamens slightly exserted. 
Lower Guinea, Angola: province of Pungo Andongo, Welwitsch, 5550! 
22. A. Heudelotii, Briquet in Bull. Herb. Boiss. ii. 689. 
Perennial. Stems erect, much-branched, finely pubescent, 14-2 ft. 
long. Leaves congested into whorls, linear, sessile, entire, 14-2 in. 
long, narrowed to the base, finely pubescent on both sides. Heads in 
dense corymbs at the end of the branches, globose, }~} in. diam. ; basal 
bracts linear, entirely foliaceous; flower-bracts obovate-cuneate, pale, 
densely hairy, in. long. Flower-calyx } in. long; lips oblong, as long 
as the tube. Corolla twice as long as the calyx, pale violet. 
Upper Guinea. Senegambia: banks of the Rio Nunez, Heudelot! and without 
precise locality, Heudelot, 620! French (iuinea : Sulimania ; Herimankuna, Scoft- 
Elliot, 5262! 
Nile Land. British East Africa: Jur; Agada, near Jur Ghattas, Schweinfurth, 
2470 ! 2541! Jur Awet, Schweinfurth, 4273 | 
23. A. Laurentii, Briquet in Bull. Soc. Bot. Belg. XXXVil. 79. A 
tall perennial herb. Stem robust, tetragonous, clothed with crisped 
hairs. Leaves sessile or subsessile, narrowly lanceolate, 1} in. long, 
very acute, entire or irregularly serrate, dull green and pubescent on 
both surfaces. Heads shortly peduncled, crowded in dense corymbs, 
depresso-globose, 4-3 in. diam. ; outer bracts round-ovate, } in. long, 
emarginate, mucronate, densely pubescent on both surfaces except at 
the base; flower-bracts with long hairs on the edge. Flower-calyx 
pubescent, ,1, in. long; lips 3-4 times the length of the tube. Corolla 
protruding 4 in. from the throat of the calyx; lips } the length of the 
ube. 
South Central. Congo Free State: Lusambo, on the River Sankuru, Laurent. 
24. A. reticulatus, Briguet in Engl. Jahrb. xix. 168. Stem very 
robust ; internodes moderately long; branchlets clothed with ferrugi- 
nous tomentum. Leaves subsessile, lanceolate, 14-3 in. long, acute, 
narrowed to the base. closely and finely serrate, green and glabrous above, 
green and pubescent with close prominent ribs beneath. Heads 
globose, 3—3 in. long, rufo-tomentose ; basal bracts ovate, acute, 4-3 in. 
long, dull green, tomentose. Flower-calyx 4-3 in. long; lips very 
