104 SELECT PLANTS FOR INDUSTRIAL CULTURE 



is about forty-fold according to Roxburgh. The whole plant 

 forms excellent stable feed for cattle. 



Dolichos uniforms, Lamarck. 



Tropical and sub-tropical Africa and Asia. An annual herb, 

 the Horse Gram of South India, where it is extensively grown. 

 Colonel Sykes got over 300 seeds from a moderate-sized plant. 

 Dr. Stewart saw it cultivated up to 8,000 feet. Content with 

 poor soils ; well adapted for stable pulse. 



Dorema Ammoniacum, Don. 



Persia, on mountains up to 4,000 feet. A tall perennial herb, 

 yielding the gum-resin Ammoniacum, which might be obtained 

 from plants to be introduced into our snowy mountains. 



Dracocephalum Moldavica, Linne. 



North and Middle Asia. An annual showy scent-herb. 



Drimys Winter!, R. and G. Forster. 



Extra-tropical South America. The Canelo of Chili, sacred 

 nnder the name of Boighe to the original inhabitants. Attains 

 in river-valleys a height of 60 feet. The wood never attacked 

 by insects (Dr. Philippi) ; thus the Australian species may be 

 equally valuable. 



Duboisia Hopwoodii, F. v. Mueller. 



The Pitury. Inland desert regions from New South Wales and 

 Queensland to near the west coast of Australia. This shrub 

 deserves cultivation on account of its highly stimulating 

 properties (Bancroft, Rudall) D. myoporoides of East Austra- 

 lia and New Caledonia, has come into use for ophthalmic 

 surgery. The alkaloid of the latter, duboisin, is allied to 

 piturin. 



Ecballion Elaterium, Richard. 



Mediterranean regions and Orient. The Squirting Cucumber. 

 An annual. The powerful purgative Elaterium is prepared 

 from the pulp of the fruit. Chemical principles : elaterkl, 

 elaterin, hydroelaterin. 



Ehrharta diplax, F. v. Mueller. (Microlana avenacea, J. Hooker.) 

 New Zealand. This tall perennial grass is fond of woodlands, 

 and deserves introduction. It is likely to prove a rich pasture 

 grass. A few Australian species, particularly of the sec- 

 tion Tetrarrhena, are readily accessible to us, and so indeed also 



