254 Select Plants for Industrial Culture and 



ately fond of the nectar of the flowers. Mr. Dickinson calculates, 

 that a ton of the finest-flavored honey can be obtained annually 

 from an acre of this Lavender. 



Lavatera arborea, Linne. 



" Tree-Mallow " of the countries 011 the Mediterranean Sea. A 

 tall biennial, or oftener perennial plant of rapid growth. The 

 ribbon-like bast is produced in greater abundance and more rapidly 

 than in most malvaceous plants, and is recommended for paper- 

 material. Bears frost to 15 F. [Gorlie]. The Tree-Mallow might 

 easily be naturalised on sea-shores, where it would be useful as a 

 quick shelter. Perhaps it might also serve with allied plants 

 for green manure. The bulky foliage has proved valuable for 

 fodder, and so has that of Lavatera plebeja (Sims) of Australia. 

 An other perennial tall species is L. unguiculata (Desfontaines) of 

 South-Europe. The Chinese annual or biennial Althaea rosea 

 (Cavanilles), the Hollyhock, might serve the same purposes. 



Lawsonia alba, Lamarck. 



North- and Middle-Africa, Arabia, Persia, India and North- 

 Western Australia. The "Henne or Henna-bush." It may 

 become of use as a dye-plant in regions free from frost. The 

 orange pigment is obtained from the ground foliage. Mr. C. B. 

 Clarke considers it one of the best hedge-plants in India, together 

 with Dodonasa viscosa (Linne) and Odina Wodier (Roxburgh). A 

 fragrant essence was distilled from the flowers already by the 

 ancient Egyptians and Israelites [Dr. G. Watt]. 



Xieersia hexandra, Swartz. 



Africa, South- Asia, warmer parts of America and Australia. 

 Found by Mr. Bailey to be one of the most relished by cattle 

 among aquatic grasses of East-Australia. In the Philippines 

 regularly cultivated for fodder in the manner of rice. L. Gouini 

 (Fournier) is a Mexican species. 



Xieersia oryzoides, Solander. 



Middle and South-Europe, various parts of Asia, Africa and 

 America. A perenial rather rough swamp-grass. Other Leersias 

 from both hemispheres are deserving of introduction, if even only 

 for the benefit of waterfowl. 



Zieonotis Leonurus, K. Brown. 



South-Africa. The foliage of this highly ornamental bush 

 deserves attention for therapeutic purposes, as, according to 

 Professor Me Owen, the leaves, when used like tobacco, are highly 

 stimulative. 



