1954] 



PLANTS COLLECTED IN NY AS ALAND 



441 



District: Nyika Plateau, Nchena-chena Spur, occasional in open grassland, shrub 

 1-2 m. high, flowers deep purple, 1900 m. present down to 1400 m., Aug. 20, 1946, 

 17353. Nchena-chena, frequent in moist situations in Brachystegia woodlands, 

 shrub 1.5-3 m. high, flowers dark purple, 1340 m., Aug. 21, 1946, 17374. Tan- 

 ganyika Territory, Nyasaland, N, Rhodesia, Angola, and (fide Gilg) Cameroons. 



Dissotis princeps (Bonpl.) Triana, Trans. Linn. Soc. 28: 57. 1871; Gilg in Engl. 

 Monogr. Afr. Pfl.-Fam. & Gatt. 2: 22. 1898. 

 Rhexia princeps BonpL Rhexies (in Humb, & Bonpl. Monogr. Melast.) 122, 123. pi. 

 46. 1823. 



Zomba District: Zomba, common and very conspicuous in Brachystegia wood- 

 lands, shrub 1-1.5 m. high, flower rich dark purple, fruit red, 1100 m., May 26, 

 1946, 16034. Zomba Plateau, in moist grassy situations and in rain-forest re- 

 growths, common, usually gregarious, shrub 1.5-2 m. high, flowers deep rich pur- 

 ple, very showy, fruit red, 1500 m., June 5, 1946, 16254. Tanganyika Territory 

 to Natal. 



Memecylon flavovirens Bak. Kew Bull. 1897: 268. 1897; Gilg in Engl. Monogr. 

 Afr. Pfl.-Fam. & Gatt. 2: 44. 1898. 

 ? District: North Road between Mzimba and Kasungu, in Brachystegia wood- 

 lands, tree 5 m. high, leaves stiff, coriaceous, slightly convex, fruit immature, 

 native name (Chinyanja) mnyowe, 1200 m., Aug. 23, 1946, 17381. Tanganyika 

 Territory, Nyasaland, N. Rhodesia, and Angola. 



LYTHRACEAE 



Ammannia prieuriana ["Prieureana"] Guill. & Perr. in Guill., Perr. & Rich. Fl. 

 Senegamb. Tent. 1: 303. 1830-33; Koehne, Pflanzenreich 17 (4 m ): 48. 

 1903. 



Kota-kota District: Benga, west shore of Lake Nyasa, Kota-kota, occasional 

 on sandy beaches, herb, branches flat, spreading, flowers reddish, 470 m., Sept. 

 2 f 1946, 17488. Chikwawa District: Lower Mwanza River, one example on a sandy 

 beach, herb 30 cm. high, flowers red, 180 m., Oct. 4, 1946, 17969. Widely dis- 

 tributed in tropical Africa, 



We are indebted to the Director of the Conservatoire et Jardin Botaniques at 

 Geneva for kindly sending on loan the type of Ammannia prieuriana Guill. & Perr. 



Ammannia nr. prieuriana Guill. & Perr. 



Chikwawa District: Lower Mwanza River, occasional on sandy beaches, flow° 

 ers reddish, 180 m., Oct. 3, 1946, 17937. 



Very close indeed to true A. prieuriana but with smaller fruits and shorter 

 calyces. I have seen a similar sheet from Portuguese East Africa (Gomes Sousa 

 771). Study in the field will be essential before the taxonomy of Ammannia can be 

 put on a really sound basis. 



OLINIACEAE 



Olinia usambarensis Gilg, Bot. Jahrb. 19: 278. 1894. 



Mlanje District: Mlanje Mountain; Luchenya Plateau, in primary forest, tree 

 15 m. high and 80 cm. in diameter at breast-height, 1890 m., June 30, 1946, 16551. 

 Abyssinia, southward through E. Africa to Nyasaland and the Zoutpansberg in 

 the northern Transvaal. 



ONAGRACEAE 



Epilobium salignum Hausskn. Oesterr. Bot. Zeitschr. 29: 90. 1879; Monogr. Gatt. 

 Epilohium 236. 1884. 



