1954] 



PLANTS COLLECTED IN NYASALAND 



53 



(thus presumably on Mount Meru), is described as having a corolla 12-13 mm. 

 long. This is considerably longer than any of S. pseudosimensis. S. uhligii is 

 probably a species akin to Calamintha elgonensis Bullock that occurs in Mbulu 

 District, Tanganyika, and, I believe, hybridizes with S. pseudosimensis. 



Scutellaria paucifolia Bak. Kew Bull. 1895: 292. 1895; in Thiselton-Dyer, Fl. 

 Trop. Afr. 5: 462. 1900. 

 Scutellaria livingstonei Bak. Kew Bull. 1898: 162. 1898; in Thiselton-Dyer, Fl. Trop. 

 Afr. 5: 462. 1900. 



Kota-kota District: Chenga Hill, sporadic in low open Brachystegia woodland, 

 perennial herb, rootstock large, woody, young shoots growing after burning of the 

 grass, flowers dark purple, 1600 m., Sept. 9, 1946, 17591. Widespread in the 

 savannah regions of tropical Africa, but rarer in the W. and there only recorded 

 from French Guinea and Nigeria. 



Achyrospermum laterale Bak. in Thiselton-Dyer, Fl. Trop. Afr. 5: 464. 1900; E. 

 A. Bruce, Kew Bull. 1936: 53. 1936. 

 Cholo District: Cholo Mountain, occasional in rain-forest undergrowth, shrub 

 2-2.5 m. high, erect, sparsely branched, more or less fleshy, 1400 m., Sept. 26, 

 1946, 17813. Endemic to Nyasaland. 



Stachys didymantha Brenan, sp. nov. 



A 5. aethiopica L., cui affinis, verticillastris bifloris et (S. aethiopica L. var. 

 hispidissima Benth. excepta) indumento dense piloso-pubescenti differt; a S. 

 leptoclada Briq., etiam cognata, habitu, calyce minore, corolla multo majore, et 

 a S. parili N.E. Br., planta similis, calyce minore minus dense pubescenti, denti- 

 bus calycis quam tubum brevioribus apice minus spinescentibus recedit. 



Herba usque ad 1 m. alta, adscendens vel subscandens. Caules usque ad 2 

 mm. diametro, tetragoni, crebre ramosi, virides vel purpurascentes, pilis plus 

 minusve densis patentibus vel subdeflexis albidis 0.5-1 mm. longis vestiti, aliis 

 brevioribus glanduliferis immixtis; internodia 1.5-8 cm. longa; Folia opposita, 

 firme chartacea, ovato-cordata, (1-) 1.5-3 (-4.5) cm. longa, (0.8-) 1-2.5 (-2.8) 

 cm. lata, apice obtusa vel nonnunquam subacuta, basi sinu aperto 1.5-4 (-6) mm. 

 alto 4-15 mm. lato, margine crenata crenis 1-2 mm. altis 1.5-5 mm. inter se 

 distantibus obtusis vel subobtusis, utrinque satis dense piloso-pubescentia, costa 

 et nervis lateralibus utrinque 3-5 et venulis supra inconspicuis vel plerumque 

 leviter impressis subtus prominulis; petiolus 0.5-1.5 (-2.5) cm. longus, ut caulis 

 sed saepe densius vestitus. lnflorescentiae caules primarios vel ramos laterales 

 terminantes; verticillastri 2-4 (- ? 5), biflori, 0.5-1.5 (-2) cm. inter se distantes. 

 Bracteae infimae foliis supremis similes, superiorae subito reductae, lanceolatae, 

 acutae, integrae vel subintegrae, subsessiles, circiter 4-6 mm. longae, 1-2 mm, 

 latae. Flores brevissime pedicellati; pedicelli 0.5-1 mm. longi, pubescentes. 

 Calyx dentibus inclusis 5-6.5 mm. longus, extra dense pubescens pilis patulis 

 vel paulum antice curvatis; tubus campanulatus, 10-nervius, intus glaber, 3.5-4 

 mm. longus; dentes 5, subaequales, anguste triangulares, acutae, 2-3 mm. longae, 

 basi 1 mm. latae. Corolla alba, purpureo-maculata vel -striata; tubus circiter 8 mm. 

 longus, basi 1.5 mm. diametro, apicem versus paulum ampliatus, extra inferne 

 glaber, superne pilis glandulosis et eglandulosis breviter pubescens; labium 

 superius valde concavo-convexum, breviter oblongo-obovatum, extra pubescens, 

 intus glabrum, 3.5-4 mm. longum, 2 mm. altum (a latere visum) apice rotundatum, 

 ciliolatum; labium inferius extra pubescens, intus glabrum, circiter 8-11 mm. 

 longum, lobo medio subrotundato vel etiam paulum latiore quam longiore 4-6 mm. 

 longo 5-8.5 mm. lato margine minute eroso apice leviter (usque ad 1 mm. alto) 

 emarginato, lobis lateralibus breviter semieilipticis 0.7-2 mm. longis basi circiter 



