308 



OUTLINE OF PLANT GEOGRAPHY 



A feature of the Cape flora is the abundance of bulbous and 

 tuberous plants of the Iris family, which has a very large number 

 of species. In addition to numerous species of Gladiolus, there 

 are the less familiar Watsonias, with pink and scarlet flowers, 

 white, red and yellow Ixia and Sparaxis, blue and purple Babianas, 

 yellow, pink and white Romuleas. There are no proper species 

 of Iris, but Moraea, which closely resembles it has many attractive 

 species. Many of these beautiful Cape bulbs find a congenial 



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Fig. S4. — Aloe ISchlechteri, north slope of kopje near Beaufort West. Photo., 



Dr. W. A. Cannon. 



home in California and Australia and are common ornaments of 

 the gardens. 



The lily family and the Amaryllis family are abundantly repre- 

 sented, and some are familiar in cultivation. The blue Agapanthus 

 and pink Amaryllis bella-donna, which in late summer sends up its 

 leafless stalks crowned with rosy flowers, are the best known of 

 these. Less commonly seen in cultivation are species of Nerine and 

 Brunsvigia. 



There are many beautiful ground orchids at the Cape, which in 

 this respect, also, recalls West Australia. Among the characteristic 

 genera are Satyrium, Disperis, Disa, Eulophia, and others. 



One is immediately struck by the abundance and beauty of the 

 species of Oxalis, white, yellow, pink and crimson, which occur in 



