1954] 



PLANTS COLLECTED IN NYASALAND 



79 



Mlanje District: Mlanje Mountain; west slope, common in second-growth forest, 

 tree 4-5 m. high, 1850 m., July 18, 1946, 16862. Nyasaland and S. Rhodesia. 



In M. pilulifera the glands on the lower surface of the leaves appear very few 

 or absent, while in /VI. salicifolia, the following species, the glands are abundant 

 and conspicuous. This is an easier and much more satisfactory way of distin- 

 guishing these two species than to use the petiole-length as Rendle does in his 

 key in the Flora of tropical Africa to the species of Myrica. 



Myrica salicifolia Hochst. ex A. Rich. Tent. Fl. Abyss. 2: 277. 1851; Hutch, in 

 Prain, Fl. Trop. Afr. 6 2 : 313. 1917; E. A. Bruce, Kew Bull. 1940: 53. 1940; 

 Boutique, Fl. Congo Beige 1: 34. 1948. 

 Myrica kilimandscharica Engl. Hochgebirgsfl. Trop. Afr. (Abh. Preuss. Akad. Wiss. 

 Berl. 1891:) 188. 1892; Hutch, in Prain, Fl. Trop. Afr. 6 2 : 312. 1917; Boutique, 

 Fl. Congo Beige 1: 37. 1948. 



Zomba District: Zomba Plateau, one of the chief trees in old secondary rain- 

 forest, tree 5-10 m. high and up to about 30 cm. in diameter at breast-height, 

 leaves convex, slightly aromatic, margins much recurved, flower-spikes reddish, 

 1500 m., June 7, 1946, 16316. North Nyasa District: Nyika Plateau, one of the 

 chief trees of second-growth forest, tree 4-8 m. high and to 50 cm. in diameter, 

 leaves stiff, convex, just coming into flower, 2300 m., Aug. 14, 1946, 17221; 

 ibid., usually the chief constituent of grassland shrubberies, shrub 30-150 cm. 

 high, leaves stiff, convex, 2500 m., Aug. 18, 1946, 17324. In east Africa from 

 Abyssinia southwards to Tanganyika Territory and Nyasaland; there have been, 

 hitherto, no Nyasaland specimens of M. salicifolia in Herb. Kew., but M. kili- 

 mandscharica was recorded in Check-Lists For. Trees & Shrubs Brit. Emp. 2 

 (Nyasaland): 55 (1936). 



Miss E. A. Bruce (I.e.) considered M. kilimandscharica to be synonymous with 

 M. salicifolia. I follow her view, rather than keeping them separate and following 

 Hutchinson and, more recently, Boutique, whose distinguishing characters for 

 the two species I cannot make work. 



Myrica conifera Burm. f. Fl. Cap. Prodr. 31. 1768; Hutch, in Prain, Fl. Trop. Afr. 

 6 2 : 314. 1917. 



North Nyasa District: Nyika Plateau, forming dense shrubberies on banks of 

 grassland streams, shrub 1.5 m. high, leaves yellowish-brown beneath, flower- 

 buds only, 2300 m., Aug. 18, 1946, 17313. Southwestern Tanganyika Territory 

 and Angola, southwards to South Africa. 



SALICACEAE 



Salix subserrata Willd. Sp. PI. 4: 671. 1806; Milne-Redhead, Kew Bull. 1936: 

 474. 1936. 



Salix safsaf baelledi Forsk. Fl. Aegypt.-Arab. lxxvi. 1775, nom. nud. 

 Salix safsaf Forsk. ex Trautv. Sal. 6. pi. 2. 1836; Skan in Prain, Fl. Trop. Afr. 6 2 : 

 318. 1917. 



Dowa District: Dowa, gregarious on swampy stream-banks, shrub 3-5 m. high, 

 branchlets upright, branchlets and petioles reddish-brown, leaves glaucous be- 

 neath, about 1500 m., July 23, 1946, 16880. Widespread in tropical Africa, to 

 Bechuanaland in the south, extending northwards to Egypt, Libya, Palestine, and 

 Syria. 



HYDROCHARITACEAE 



Ottelia ulvifolia (Planch.) Walp. Ann. 3: 510. 1852-1853; Dandy, Jour. Bot. 72: 

 138. 1934. 



Damasonium ulvae folium Planch. Ann. Sci. Nat. III. 11: 81. 1849. 



