FLORAS OF THE WORLD 51 



ORANGE FREE STATE 



See also South Africa. 



Local 



Markbtter, E. I. 'n Plantegeografiese skets en die flora van Witzieshoek, 

 O. V. S. ; Oliviershoekpas, Natal ; en Koolhoek, O. V. S. Annals Univ. Stellen- 

 bosch v. 8, sect. A, no. 1. 50 p. 1 fig. (map). 1930. 



Topography, climate, plant formations, ecology; annotated list of vascular 

 plants, with citation of exsiccatae. 



PORTUGUESE GUINEA 



See also Angola (Ficalho) ; West Africa. 



General 



Sousa, A. de Figueiredo Gomes e. Notas sobre a flora da Guine portngnesa. 

 Bol. Agenda Geral Colon. Portugal 5 (44) : 99-139. illus. 1929. 



Physiography, soils, climate, general features of flora ; annotated list of 

 useful wild and cultivated plants, with vernacular names. 



RIO DE ORO 



General 



Almonte, Enrique d'. Ensayo de una breve descripcion del Sahara espanol. 

 Bol. R. Soc. Geog. (Madrid) 56: 129-347. plates, 3 maps. 1914. 



Sketch of geography, hydrography, geology, climate, fauna, bibliography, 

 etc.; includes (p. 216-235) a chapter "Indicaciones relativas a la flora," with 

 list of known vascular plants, with localities and vernacular names, and 

 remarks on general features of vegetation. Covers the colony of Rio de Oro 

 (proper), the protectorate, and occupied territory, reaching from 20° 46' to 

 29° N. Lat. 



RUANDA AND URUNDI 



See Belgian Congo (Burtt ; Cotton; Staner) ; Northern Rhodesia (Fries); Tanganyika 

 (Meyer; Mildbraed) ; West Africa (Oliver). 



SAHARA 



See also French West Africa. 



Bruno, Alessandro. I prodotti utili della vegetazione sahariana. Bol. Soc. 

 Africana Italia 25: 265-280. tab. 1906. 



Annotated list of 57 useful plants, with vernacular names (on chart). 



Chevalier. Auguste. Les productions vegetales du Sahara et de ses confins 

 nord et sud . . . Revue Bot. Appl. et Agr. Trop. 12: 669-924. 1932, 



Includes (p. S25-898) "Liste des plantes cultivees ou & cultiver ou spontanees 

 et utilisees par les indigenes dans le Sahara et sur ses confins nord et sud," 

 an annotated systematic list, with vernacular names, localities, and uses, 

 preceded by chapters on general features of flora and on edible plants, woods, 

 and various other useful plants, with bibliographies. 



Diels, Ludwig. Beitriige zur flora der Zentral-Sahara und ihrer pflanzen- 

 geographie. Nach der sammelausbeute des freiherrn Hans Gyer von Schwap- 

 penburg. Bot. Jahrb. Engler 54 (Beibl. 120): 51-155. pi. 1 (map). 1917. 



Itinerary, annotated bibliography ; annotated list of Characeae and vas- 

 cular plants; plant geography, climate, general features of vegetation, elements 

 of flora. The list itself incorporated into Maire, Etudes sur la flore et la 

 vegetation du Sahara central (1933). Covers in general the area from 2° to 

 12° E. Long., 21° to 29° N. Lat. 



Diirkop, Erich. Die nutzpflanzen der Sahara. Beih. Tropenpfl. 4: 157-204. 

 1903. (Preprinted as Inaug.-diss., with title: Die wirtschafts- und handels- 

 geographischen provinzen der Sahara, begriindet durch niitzliche pflanzen. 

 56 p. 1902.) 



Geography, climate, general features of vegetation; running account of prin- 

 cipal and minor useful plants, geographically grouped, with footnote references. 



