254 



EASTERN ETHIOPIA 



XX 



or seed. Bulbils are modified buds, and appear as small 

 tuberous bodies on the flowerino- branches, lodo;ed in the 



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Sisal plant. Cultivated for fibre in East Africa. 

 The edges of some species are furnished with spines, 



axils below the flowers. They contain a reserve store 

 of nutritive substances and remain on the flower stalk 



