1954] 



PLANTS COLLECTED IN NYASALAND 



7 



CONVOLVULACEAE 



Ipomoea nr. blepharophylla Hall. f. Bot. Jahrb. 18: 125. 1893. 



Dedza District: Dedza, sporadic in Brachystegia woodland, perennial herb 

 4-7 cm. high, flowers pink, young shoots flowering after the burning of the grass. 



The flowers of Brass 17637 are smaller than those of typical /. blepharophylla, 

 but the material is too scanty to classify satisfactorily at present. Similar plants 

 have been collected in Nyasaland and N. and S. Rhodesia. 



Ipomoea tenuirostris Choisy in DC. Prodr. 9: 379. 1845; Bak. & Rendle in 

 Thiselton-Dyer, Fl. Trop. Afr. 4 2 : 143. 1905. 

 Kota-kota District: Nchisi Mountain, in shrubberies bordering lower montane 

 forest, common vine 2-3 m. high, flowers pale purple with dark purple "eye," 

 1600 m., July 26, 1946, 16957. Nchisi, in Brachystegia woodlands, vine, flowers 

 purple-pink, 1350 m., Sept. 8, 1946, Vernay 17569*. Cholo District: Cholo Moun- 

 tain, common in rain-forest regrowths, vine 2-3 m. high, flowers whitish with 

 purple throat, 1200 m., Sept. 19, 1946, 17649. Eritrea and Anglo-Egyptian Sudan 

 to N. Rhodesia and Nyasaland. 



Ipomoea operosa C. H. Wright, Kew Bull. 1897: 275. 1897; Bak. & Rendle in 

 Thiselton-Dyer, Fl. Trop. Afr. 4 2 : 151. 1905. 

 Mlanje District: Mlanje Mountain, west slope, frequent in brushy growths on 

 steep rock-slopes, vine about 2 m. high, flowers pink, showy, 1650 m., July 18, 

 1946, 16874. Belgian Congo (fide Lebrun, Taton & Toussaint, Contr. Etude Pare 

 Nat. Kagera 114. 1948), southern Tanganyika Territory, and Nyasaland. 



Ipomoea wightii (Wall.) Choisy, Mem. Soc. Phys. Geneve 6: 470. 1833; in DC. 

 .Prodr. 9: 364. 1845; Bak. & Rendle in Thiselton-Dyer, Fl. Trop. Afr. 

 4 2 : 157. 1905. 

 Convolvulus wightii Wall. PI. Asiat. Rar. 55. pi. 171. 1831. 



Cholo District: Cholo Mountain, occasional in second growths of rain-forest, 

 vine 2 m. high, sap milky, flowers purple with darker purple throat, 1200 m., 

 Sept. 19, 1946, 17647. Uganda to Natal and the Transvaal; also in Madagascar 

 and tropical Asia. 



Ipomoea pes-tigridis L. Sp. PI. 162. 1753; Bak. & Rendle in Thiselton-Dyer, 

 Fl. Trop. Afr. 4 2 : 158. 1905; van Ooststroom, Blumea 3: 504. 1940. 

 Chikwawa District: Lower Mwanza River, trailing on sandy beaches, vine, 

 flowers pale purple, 180 m., Oct. 6, 1946, 18022. Widely spread on the eastern 

 side of fopical Africa, rare in West Africa; also in tropical Asia and (fide van 

 Ooststr. I.e.) in the Mascarene Islands. 



Ipomoea aquatica Forsk. Fl. Aegypt.-Arab. 44. 1775; Bak. & Rendle in Thiselton- 

 Dyer, Fl. Trop. Afr. 4 2 : 170. 1905; van Ooststroom, Blumea 3: 528. 1940. 



Ipomoea reptans sensu Poir. ex Roem. & Schult. Syst. Veg. 4: 244. 1819; non /. 

 reptans (L.) Poir. I.e. quoad typo. 



Chikwawa District: Lower Mwanza River, trailing on moist sandy beaches, 

 herb, stems 3-4 m. long, sap milky, flowers pink, 180 rru, Octo 4, 1946, 17966. 

 Tropical Africa, Asia, America, and reaching Australia. 



Ipomoea reptans (L.) Poir. is usually said to date from Lam. Encyc. Suppl. 

 3: 460 (1813), but although Poiret here suggested that Convolvulus reptans L. 

 should be transferred to Ipomoea, he did not make the combination, which dates, 

 apparently, from Roemer & Schultes' later work mentioned above. 



However, this is by the way, for Merrill in Philipp. Jour. Sci. 59: 451, 452 

 (1936) shows that Convolvulus reptans L. is not what it has been usually as- 

 sumed to be, but is the Asiatic Merremia hirta (L.) Merr.; a photograph of the 



