THE PERCY SLADEN MEMORIAL EXPEDITION, 1915-1916 27 
Boraginaceae. 
? Cordia sp. (material very incomplete). Below Ababes, on breccia-banks of 
Tsondab River, 9147. 
Ehretia kottentotica, Burch. Between Haris and the Awas Mountains, on 
high plateau, 9680. North of Hoffnungsfelde, on stony plateau, 9522. 
Gurumanas, on outcrop of quartz, 9424. 8 km. north-west of Nomtsas, 
on banks of Usib River, 9322. * 
Heliotropium ovalifolium, Forsk. Above Ababes, in bed of Tsondab River, 
9124. Great Fish River, between Gibeon and Freistadt, in sand, 9211. 
Heliotropium strigosum, Willd. Little Karas Mountains, western foothills 
near Holoog, on shale-slopes, 9753. Below Ababes, on breccia-banks 
of Tsondab River, 9154. 
Heliotropium supinum, Linn. Ganaams, on sandy bed of Leber River, 9373. 
Tournefortia tuberculosa, Cham. Between Voigtsgrund and Brekdorn, 
among stones in minor stream-bed, 9354. 8 km. north-west of Nomtsas, 
shale-ledges in Usib River bed, 9301. South of Choaberib in stream 
bed, 9443. Above Ababes, in bed of Tsondab River, 9128. 
Trichodesma africanum, R. Br. Above Ababes, in bed of Tsondab River, 9123. 
Trichodesma angustifolium, Harv. Between Hoffnungsfelde and Haris, on 
plateau, 9531. Naukluft Mountains, near Homnus, on dried mud 
banks of river, 9110. 
Welstedia Dinteri, Pilger. Between Gellap and Great Fish River, on dry 
shale-slopes, 9291. 
Anchusa capensis, Thunb. Nauchas, in river-bed, 9004. 
CONVOLVULACEAE. 
• Ipomoea argyreioides, Choisy. North of Gurumanas, in sand, 9572. Haris, 
9560. 
Ipomoea fragilis, Choisy. Awas Mountains, at Klein Windhuk, on quartzite- 
slopes, 9793. 
Ipomoea adenioides, Schinz. 8 km. north-west of Nomtsas, in bed of Usib 
River, 9307. Below Ababes, in bed of Tsondab River, 9149. North 
of Areb, on sandy plains, 9472. 
Ipomoea Bolusiana, Schinz. (I. angustisecta, Engl.). At Areb, on stony slopes, 
9033. Awas Mountains, 12 km. east of Windhuk, on quartzite-slopes, 
9604. Between Hoffnungsfelde and Haris, stony places on plateau, 
9552. Between Haris and the Awas Mountains, on high plateau, 9691. 
Convolvulus ulosepalus, Hall. f. Naukluft Mountains, between Goas and 
Kabiras in river-bed, 9983. Between Hoffnungsfelde and Haris, in 
river-bed, 9553. Kubib in vlei-ground, 9483. Nauchas, on banks of 
Kam River, 9043. 
Convolvulus sp. Haris, Kuisib River bed, 9562. 
