180 xc. convolvulacetE (baker and rendle). [Ipomcea. 



Wile Land. Nubia : Abdin, Paul von Wilrttemhurg. Abyssinia, ScMmper, 

 2042. 



In the Flora Capensis, iv. ii. 67, this specimen is regarded as a yellow-flowered 

 variety of I. palmata, but it differs in the saccate calyx as well as in the colour of 

 the flower. The South African specimen is probably not conspecific, the corolla is 

 only ~L\ in. long, and apparently white ; it seems also to be a smaller-leaved plant. 



102. I. calcarata, N. E. Br. Stem twining |—1 lin. thick, sparsely 

 covered with minute tubercles. Leaves glabrous, doubly tripartite, 

 primary divisions stalked, secondary lanceolate, acute, tapering at the 

 base, median segment lf-2^ in. long, |— | in. broad, the others gradually 

 smaller; petiole f-lj in. long ; pseud ostipulate by the development of 

 a pair of axillary palmatisect leaves. Peduncles f— 1 in. long, 1 -flowered, 

 glabrous, bearing at the middle a pair of subulate bi-acteoles f lin. long. 

 Sepals elliptic-oblong, very obtuse, glabrous, 5 lin. long and half as 

 broad, two of the outer sagittately bicalcarate at the base, the third 

 with one spur and the two inner without spurs. Corolla funnel-shaped, 

 glabrous, If -2 in. long, with limb of equal diameter, light yellow or 

 delicate saffron-coloured marked with light violet in the throat of 

 the tube. ; ' Flower opens with sunrise and rapidly closes." Fruit 

 unknown. 



Mozamb. Dist. British Central Africa : Ngamiland ; Kwebe, Lugard, 182 ! 

 Kwebe Hills, 3300 ft., Mrs. Lugard, 208 ! 



Evidently very closely allied to, perhaps inseparable from, I. dasysperma, 

 Jacq., which we know only from the figure. Jacquin, however, does not show the 

 quasi-stipular development which gives a characteristic appearance to the leaves. The 

 corolla-tube is slightly longer, and the calyx more markedly gibbous in the plants 

 which Mr. Brown has described. — A. B. R. 



103. I. saccata, Hcdlier f.in Engl. Jahrb. xxviii. 18. A perennial 

 herb. Stems twining, glabrous, terete, rubescent, rough with raised 

 points, as are the peduncles and pedicels. Leaves about 2| in. long by 

 3A in. broad, biternately pedate, with lanceolate acute mucronate lobes ; 

 petiole lh in. long, thin, sparsely muriculate. Peduncles axillary, 

 robust, longer than the petiole, up to 2| in. ; flowers many, corymbose ; 

 pedicels ^-1 in. long. Calyx 5 lin. long. Sepals subcoriaceous, 

 brownish with a pale membranous edge, roundish-elliptic, obtuse, the 

 two outer gibbous and fimbriate on both sides at the base, sometimes 

 almost spurred. Corolla showy, 2| in. long, tubular-campanulate ; 

 limbs wide spreading, violet in the lower part, yellow in the upper. 

 Capsule glabrous, globose, about 5 lin. in cliam. Seeds trigonous, 

 velvety and with long yellowish hairs on the angles. 



IVEozamb. Sist. German East Africa : Usagara ; Tubugue, Stuhlniann, 

 210. 



101. I. odontosepala, Baker in Kew Bulletin, 1891, 73. Habit 

 apparently of /. palmata. Leaves thin, glabrous, orbicular in general 

 outline, 1^-2 in. in diam., deeply divided into 5 lanceolate to oblanceo- 

 late, acute segments, the outer pair forked ; petiole very slender, about 

 as long as the blade. Calyx glabrous, 4 lin. long ; sepals coriaceous, 



