406 
USEFUL PLANTS OF THE DISTRICT OF LAKHfMPUR, 
LXVIII. CONVOLVULACEAE. 
153. Argyreia Loup. 
182. A. argentea Choisy. F. B. I. iv, 185 ; Eng. & Prantl iv, 3a, 
2i ; Beng. PI. 741. 
Jokai. No. 186. 
Local name. — Tolkoya alu. 
Distrib. — From Bengal through Assam to Chittagong, Khasi Hills, 
A climber with broadly ovate leaves which are hairy above and silky beneath, and with 
rose-pnrple trumpet-shaped flowers. The plant has milky juice. The tuber in the form c£ 
a paste is applied externally in abscess of the stomach. Leaves are applied to boils. 
154. Ipomoea Linn. 
183. I. batatas Lamk. F. B. I. iv, 202 ; Eng. & Prantl iv, 3a, 31 > 
Beng. PI. 735 ; D. E. P. iv, 478. 
Dibrugarh. Nos. 12 and 13. 
Local name.— Bang alu. “ Sweet potato/'* 
Distrib. — -Presumably a native of America but naturalised in India 
and extensively cultivated. 
A widely creeping herb with angular leaves. There are two varieties. One with white,, 
the other with red tubers. Both are favourite crops with cottagers throughout the district. 
The plants thrive particularly well on the sandy soil of the island at Dibrugarh. 
155. Cusctlta Linn. 
184. C. reflexa Roxb. F. B. I. iv, 225 ; Eng. & Pran&l iv, 3a, 40 ; 
Beng. PI. 23 ; D. E. P. ii, 671 ; Pharmacog. Ind. ii, 584. 
Dibrugarh. Nos. 66 and 41145. 
Local name.— Amar lati, akkas bel. 
Distrib. — Throughout India and Ceylon. Also in Malaya. 
A common parasite whose fleshy, thread-like stems form dense yellow masses in various 
shrubs. On the Red Road at Dibrugarh it is especially in evidence on shrubs of Thevetia 
neriifolia Juss. It also frequently infests Zizyphus Jujuha Lamk. An infusion of the plant 
is said to make an excellent wash for sores. The natives say that it cleanses and brings 
about rapid healing. 
LXIX. BORRAGINAfiEJL 
15®. Cordia Linn. 
185. C. myxa L. F. B. 1. iv, 136 ; Eng. & Prantl iv, 3a, 83; Beng. 
PI 714; D. E. P. ii, 563; Pharmacog. Ind. ii, 518. 
Dibrugarh. Nos. 155 and 173. 
