Acrocephalus. | CII. LABIATH (BAKER). 357 
3 heads on long leafless peduncles. Leaves only a single pair at the 
middle and another at the fork, lanceolate, sessile, subcoriaceous, 
nearly glabrous, obscurely toothed, the central pair 2-3 in. long ; basal 
leaves narrowed into a short petiole. Heads globose, }-} in. diam. ; 
basal bracts small, ovate, green ; flower-bracts orbicular-cuneate, very 
hairy, } in. long and broad. Calyx } in. long; lips oblong. Corolla 
twice as long as the calyx. 
Lower Guinea. Angola: province of Huilla, Welwitsch, 5608! 5609! 5610! 
6. A. cylindraceus, Oliv. in Trans. Linn. Soc. xxix. 135, t. 132. 
Annual. Stems erect, much-branched, 3 ft. long, slightly pubescent 
upwards. Leaves shortly petioled, oblong-lanceolate, obscurely crenate, 
pubescent on both sides, 1-2 in. long. Heads numerous, laxly corym- 
bose, oblong, 4 in. diam., with 2-4 small ovate green bract-leaves at the 
base ; flower-bracts pale green, orbicular-cuneate, } in. broad. Calyx 
densely hairy, finally } in. long; lips as long as the tube. Corolla more 
than twice as long as the calyx ; lips short.—Briquet in Bull. Soc. Bot. 
Belg. xxxvii. 76. A. verbenaceus, Vatke in Linnea, xl. 178. 
Nile Land. British East Africa: Unyoro district, cultivated in beds near the 
huts of the natives, Speke § Grant, 585! Ruwenzori, 3300 ft., Scott-Elliot, 7602 ! 
Lower Guinea. Congo, Dewevre, 993. 
Mozamb. Dist. (erman East Africa: Lake district, Stuhlmann (ex Giirke). 
Portuguese East Africa: Mainland, opposite Mozambique, Peters. 
Nearly allied to 4. villosus, Benth., of Madagascar. 
7. A. oligocephalus, Baker in Kew Bulletin, 1898, 160. Stem 
slender, erect, 4-angled, finely and shortly hairy. Leaves shortly 
petioled, lanceolate, 1-14 in. long, crenate, narrowed from the middle 
to the base, green and pilose on both surfaces. Heads few, globose or 
oblong, } in. diam., remotely and laxly corymbose ; basal bracts ovate or 
oblong, green to the base, hairy on both surfaces ; peduncles long ; 
flower-bracts orbicular-cuneate, rigid, brown, hairy, the lower } in. 
broad. Calyx } in. long; lips obtuse. Corolla-tube as long as the 
calyx ; lips small. 
Mozamb. Dist. British Central Africa: Nyasaland ; between Kondowe and 
Karonga, 2000-6000 ft., Whyte / and without precise locality, Buchanan, 593! 
8. A. porphyrophyllus, Baker. Stems densely clothed with 
short spreading bie Leaves linear or lanceolate, sessile, denticulate, 
hairy, especially beneath. Heads densely corymbose at the ends of the 
branches, oblong or subglobose, } in. diam. ; basal bracts large, ovate, 
purple, pubescent ; flower-bracts orbicular-cuneate, very hairy, } in. 
long and broad. Calyx not protruded beyond the bract. Corolla not 
seen, 
Mozamb. Dist. (ierman East Africa: without precise Iceality, Hannington ! 
-h, xix. 171. Stems 
‘ . oe . na Engl. Jahr 
9. A, Schweinfurthii, Briquet in Eng hed upwards with 
tall, branched ; internodes short; branches clot 
