384 CII, LABIATAE (BAKER). | Pycnostachys. 
drical, 4 in. diam.; bracts small, ovate. Calyx pilose; tube very 
short ; teeth very rigid, linear, 3-1 lin. long. Corolla } in. long ; tube 
rather longer than the calyx; lips small. Stamens shorter than the 
corolla. 
Mozamb. Dist. British Central Africa: Urungu ; Fwambo, 5000-6000 ft., 
Carson, 38 ! 
21. P. Volkensii, Giirke in Engl. Pf. Ost-Afr. C. 344. Stem 
branched, tetragonous, pubescent. Leaves shortly petioled, oblong- 
lanceolate, acuminate, narrowed to the base, serrate, pubescent on both 
sides. Flowers sessile, many in a spike. Calyx campanulate; teeth 
very rigid, } in. long, reflexed, rather longer than the tube. Corolla 
violet.—Giirke in Engl. Jahrb. xxii. 144. 
Upper Guinea. Cameroons: Cameroon Mountain, 6000-10,000 ft., Mann, 
1222! 1960! Johnston, 37! Preuss, 688. Fernando Po: Clarence Peak, 9000 ft., 
Mann, 280 ! 
Wile Land. British East Africa: Western slope of Ruwenzori, 5000-6000 ft., 
Stuhlmann, 2300. 
Mozamb. Dist. (German East Africa : Usambara; Mlalo, Holst, 3707, 3812 ; 
Kilimanjaro, Mawenzi Peak, 6600 ft., Volkens, 823. Ukami; Uluguru, 6000 ft., 
Stuhlmann, 9225, 
22. P. Hanningtonii, Baker. Branchlets slender, square, gla- 
brous. Leaves shortly petioled, oblong, acuminate, membranous, 
obscurely pubescent, slightly crenate, cuneate at the base, the upper 
2-3 in. long. Flower-spike very dense, conical, $ in. diam., exclusive 
of the corollas. Calyx-teeth very slender, } in. long in the flowering 
stage. Corolla with a large deflexed funnel-shaped throat, a small 
quadrate reflexed upper lip and a deeply concave lower lip, 4 in. long. 
Stamens rather shorter than the lower lip. 
Mozamb. Dist. German East Africa: Forests of Ugogo, Hannington ! 
23. P. Meyeri, Giirke in Engl. Hochgebirysfl. Trop. Afr. 362. 
Stem branched, tetragonous, quite glabrous. Leaves shortly petioled, 
oblong, acuminate, serrate, 3-4 in. long, quite glabrous on both sides, 
narrowed to the base. Spike 1$-2} in. long. Flower-calyx sessile ; 
tube campanulate, } lin. long ; teeth 3-4 times the length of the tube. 
Fruit-calyx curved, } in. long; teeth as long as the tube. Corolla half 
as long again as the flower-calyx. 
Mozamb. Dist. German East Africa: Kilimanjaro, 6000-7000 ft., Meyer, 
Volkens, 1293 ! 
24. P. ruwenzoriensis, Baker. A perennial herb, with strongly 
quadrangular pilose branches. Leaves shortly petioled, ovate, 2—3 in. 
long, acute or acuminate, deeply crenate, moderately firm, densely 
pubescent on both surfaces. Raceme solitary, very dense, terminal, 
oblong-cylindrical. Calyx-tube small, campanulate, densely pilose ; 
teeth subulate, rigid, yz in. long. Corolla 4-4 in. long; tube much 
