'380 cii. LABIATE (baker). [Pycnostockys . 



29. P. orthodonta, Garke in Engl. PJf. Ost-Afr. C. 345. Stem 

 tetragonous, glabrous. Leaves with a very long petiole, ovate-lanceolate, 

 conspicuously acuminate, narrowed to the base, deeply crenate, mem- 

 branous, quite glabrous on both surfaces. Spikes very long. Calyx- 

 tube campanulate ; teeth longer than the tube, straight, not reflexed. 

 IVXozamb. I>lst. Portuguese East Africa: Gorongoza ; near Gouveia, Carvalho. 



oO. P. pubescens, Gilrke in Engl. Pji. Ost-Afr. C. 345. Stem 

 branched, tetragonous, pubescent. Leaves with a long petiole, ovate- 

 lanceolate, 3-4 in. long, acuminate, narrowed to the base, inciso-crenate, 

 pubescent on both sides, more densely beneath. Spike elliptical ; flowers 

 sessile. Calyx globose, pubescent ; teeth IJ— 2 times the length of the 

 tube, pubescent upwards. 



nZozamb. Blst. Portuguese East Africa : Gorongoza district, Ca7-caJho. 

 British Central Africa : Nyasaland, Buchanan. 



31. P. leptophylla. Baker in Kevi Bulletin^ 1898, 161. Stems 

 long, erect, branched, square, obscurely pubescent. Leaves distinctl}; 

 petioled, ovate, acute, membranous, scabrous, the lower 2 in. long; 

 base entire, broadly cuneate. Spikes dense, 1-2 in. long. Calyx-tube 

 campanulate, \ in. long ; teeth subulate, scabrous, half as long again as 

 the tube. Corolla blue, \ in. long ; lower lip concave, unguiculate, 

 \ in. long ; upper lip small. Stamens not exserted. 



IUXozamb. Blst. British Central Africa: Nyasaland; Kondowe to Kaionga, 

 2006-6000 ft., Whyte ! and without precise locality, Buchanan, 873! 



32. P. Batesii, Baker. An undershrub 8 ft. high, with slender 

 (quadrangular branches. Leaves long-petioled, cordate-ovate, 2-3 in. 

 long, acute, crenate, membranous, green and glabrous on both surfaces. 

 Spike terminal, very dense, 1 in. long. Calyx-tube campanulate, hairy ; 

 teeth lanceolate -subulate, rigid, erecto-patent, J in. long. Corolla 

 purple; lower lip oblong-navicular, J in. long. Stamens included. 



Upper Guinea. Cameroons : Efulen, in wet places. Bates, 372 ! 



33. P. cyanea, Giirke in Engl. Pji. Ost-Ajr. C. 345. Stem 

 branched, tetragonous, glabrous. Leaves with a long petiole, ovate, 

 very acuminate, narrowed to the base, irregularly and deeply crenate, 

 membranous, glabrous except on the ribs and margins. Spikes many- 

 flowered. Calyx pubescent; tube campanulate, 10-nerved; teeth 

 obli(|uely erect or slightly reflexed. Corolla blue. 



Mozamb. Dist. (iernian East Africa : Usagara ; Tubugwe, Stuhlmann, 213. 

 British Central Africa: Nyasaland, Buchanan. 



34. P. urticifolia, llouk. in Bot. Jfag. t. 5366. A much-branched 

 perennial herb, 5-7 ft. high, with pubescent branchlets. Leaves long- 

 petioled, ovate, acute, deeply inciso-crenate, densely pubescent, the 

 lower 3-4 in. long. Spikes very dense, Anally 2-3 in. long, l^y in. 

 <iiam. exclusive of the corollas. Calyx finally | in. long; teeth" very 

 rigid, three times as long as the tube. Corolla bright blue; lower lip 



