Naturalisation in Extra-Tropical Countries. 35 



Aloe spicata, Linn6 fil. 



South- Africa. This also furnishes Cape-aloes, and is an exceed- 

 ingly handsome plant. 



Aloe SUCCOtrino, Lamarck. (A. vera, Miller.) 



South-Africa. A purplish-flowered species, figured already by 

 Commelyn in 1697 [Baker]. Yields the common Socotrine-aloes 

 and Moka-aloes. 



Aloe VUlgaris, Bauhin. (A. vera, Linne ; A. Barbadensis, Miller.) 



The Yellow-flowered Aloe. Countries around the Mediterranean 

 Sea, also Canary-Islands, on the sandy or rocky sea-coast. Such 

 places could also be readily utilised elsewhere for this and allied 

 plants. Dr. Sibthorp has identified this species with the Aloe of 

 Dioscorides ; thus it is also the real Aloe of Plinius ; hence it is not 

 probable, that A. vulgaris is also simultaneously of American origin, 

 although it is long cultivated in the Antilles, and furnishes from 

 thence the main supply of the Barbadoes-aloes, also Curacoa-aloes ; 

 likewise in East-India this species seemingly only exists in a culti- 

 vated state. Haworth found the leaves of this and of A. striata 

 softer and more succulent than those of any other aloe. It is said to 

 be the only species with yellow flowers among those early known, 

 and it is also the only one, which Professors Wilkomm and Parlatore 

 record as truly wild in Spain and Italy. 



Aloexylon Agallochum, Loureiro. 



Cochinchina, on the highest mountains. The precious aloe-wood, 

 so famed from antiquity for its balsamic fragrance and medicinal 

 properties is derived from this tree. 



Alopecurus bulbosus, Hudson. 



Middle- and South-Europe. An perenntal rural grass for salt- 

 marshes. 



Alopecurus geniculatus, Linne. 



Europe, Asia, North-Africa. A perennial fodder-grass, valuable 

 for swampy ground ; easily naturalised. 



Alopecurus pratensis, Linne.* 



Meadow " Fox-tail " grass. Europe, Northern Africa, ^Northern 

 and Middle Asia. In Norway indigenous to lat. 69 11' [Schue- 

 beler]. One of the best of perennial pasture-grasses. It reaches 

 its full perfection only after a few years of growth, as noticed by 

 Sinclair. For this reason itf is not equal to Dactylis glomerata for 

 crop-rotation, but it is more nutritious than the latter, although the 



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