= 532 
Dec. 1912, Herb. Kew). Found under cultivation in many parts 
of Tropical Africa and in Java, Ceylon, Mauritius, Madagascar. 
The tubers are used medicinally in dysentery, Yoruba (Barter, 
l.c.) as an external remedy for burns and scalds, Madagascar 
Heckel, Ann. Inst. Col. Marseille, fase. 2, 1903, p. I5 
lectranthus ternatus). They are re as foo d, like potatoes 
in all countries where the plant is cultivated. The 
planted about 3-5 ft. apart in rich open soil, gov about 
h 
1 ft. high and come to maturity in from 5-10 months. The 
plant may also be propagated by cuttings which root freely. 
In Northern Nigeria ‘‘Tumuku”’ is cultivated in damp places 
e the tops of broad ridges, propagated by means of sprout- 
ing eyes or sections cut off the tubers (Dudgeon, N. Nig. Gaz. 
July 31st, 1909, p. 157: Agric. & For. Prod. W. Africa, 
p- 194); grown in Yola (Shaw, N. Nig. Gaz. Feb. 28, 1910, p. 32), 
and in Bassa, where in the Boju district the value of the tabe 18 
given for “1 jar dried 3d.; 14 fresh 3d." (Kay, N. Ni ig, Gaz. Suppl. 
June 30th, 1913, p. xxv. ). ‘In Ceylon ke tubers of “ Innala’’ are 
regarded as superior in flavour to those of the English potato and 
fetch a higher price in the local its: they come to maturity 
there in six months, and in the best lands the returns are given at 
from 4—5 ewt. (De Silva, Trop. Agric. xxiii. 1904, p. 117). Under 
experiment on the Gold Coast the yield per acre has been found to 
vary from 7244 lb.—1 acre tubers, 5 ne by 4 ft. in mt planted 
9th March raised the following Jan at Coomassie YN Rep. 
and raised 16th December E at Coomassie (Le, 1914 
0 I 
from cuttings; var. nigr r are from ‘tubers, 552 kilog. 
per are from cuttings; E rh a ibaa half the above quantities 
were obtained from tubers of the same varieties grown during the 
dry season; and at a farm emi in the same region, by good 
tillage and emis p the r eturns hav e been f rom 8000 to 12000 
Other figure udi be quoted, but the above will be sufficient to 
show that considerable variation may be expected in the yield. 
Under cultivation Chevalier notes three well marked varie- 
ies, distinguished according to the colour of the tubers as var. 
adagascar, Mauritius-—and the ied and Upper Tue ions 
aes mid to the Niger. The Bambara names as indicated a “bo bove 
