354 



is A. giraffae, A. albida which is so abundant in the lower 

 Swakop seems to be rare along this route since I recognised only 

 one specimen — in the bed of the Swakop at Okahandya. A. Maras, 

 Engl., the " Bastard " Acacia with heteromorphic thorns ; A. 

 heteracantha, Burch., also with heteromorphic thorns, which 

 are pubescent when young ; A. detineus, Burch., an umbrella- 

 shaped shrub ; A. dulcis, Marloth et Engl.> usually a shrub but 

 sometimes a small tree about 15 ft. high, easily recognised by the 

 reddish bark of the young shoots which later become grey ; A. 

 hebcclada, DC, varying from a fair-sized shrub to a tree 30 or 

 40 ft. high and characterised by its short, hairy thorns and 

 straight, stiff, erect pods ; A. liorrida, Willd., sometimes a small 

 bush but apparently more commonly a handsome tree 40 or 50 ft. 

 high, as well as other species, were commonly met with. Ot/m- 



nosperia crenulata, Engl., occurs frequeutly between Usakosand 

 Karibib. The Bignoniaceous shrubs Bhigozum trichotomum, 

 Burch., and Cataphractes Alexandria Don, were constantly seen 

 all the way to Windhuk and beyond. The common Cape plant 

 Jlontinia acris, Linn., is very abundant. Boscia Pechuelii, 

 Kuntze, Combretum apiculatum, Sond., Albizzia anthelmintica, 

 A. Brongn., Elep kantorhiza sujfruticosa, Schinz, Dichrosiachy s 

 nutans, Bth., Groton gratissimwn, Burch., and Zizyphus 

 mucronata, Willd., were pointed out to me at Okahandya by 

 Mr. Dinter. One of the commonest plants along the route is the 

 shrubby Vernonia a single specimen of which was seen in the 

 bed of the Khuiseb, a few miles from the sea at Walfish Bay. 

 A yellow-flowered suffruticose Crotalaria is present in great 

 abundance for many miles along the line and the white -flowered 

 Hehofropium, already seen in the Swakop at Swakopmund and 

 Haikamclmb, occurs frequently between Karibib and Okahandya. 

 Bu bous plants are very numerous between Karibib and Windhuk 

 and include Nerine lucida, Herb., Pseudogaltonia Pechuelii, 

 Kuntze, which is very common west of Okahandya, and many 

 species of Dipcadi. Buphane disticha, Herb., a species widely 

 spread in South Tropical Africa and extending southwards 

 through the Upper Karroo region almost to the south-east coast, 

 occurs frequently east of Windhuk. Between Okahandya, and 

 Windhuk many extensive glades are seen among the Acacias 

 tiiickly carpeted with grass which affords rich grazing for cattle 

 both during the summer and also in its dried up winter-condition, 

 inia district is said to be much better suited for cattle than for 

 Bfteep. I was informed that the country to the south of the 

 Auas mountains is even more valuable for grazing purposes. 

 About one hour by rail to the north of Windhuk extensive 

 wretcnes are covered by a dense undergrowth of the white - 

 nowered Capparid first found at Haikamchab while in the same 

 ?™? there occur here and there broad pink carpets of a 

 rsamiD ficcndea. Only four Pteridophyta were found; an 

 Vp^oglomim (0. vuhjatum, L.) occurs in great abundance on 



oZl P -?u ° n the low hills t0 the west of Okahandya-in 

 M?; Pany Wlt ^ a species of Harpagopht/tum— whilst Nothochlaena 

 ,li«S'ff' UMe ' and Pellae " auriculata, Link (?), both widely 



2*** ^/a ^tropical South Africa, were obtained about a 

 arltSflf Wmdhuk ; these, with a small species of Gheilanthes 

 are present on the hills near Okahandya. 



