

in Extra-Tropical Countries. 175 



Hardwickia binata, Roxburgh. 



India, up to elevations of nearly 4,000 feet. Maximum height of 

 tree 120 feet. Wood from red-brown to nearly black, close-grained, 

 exceedingly hard, heavy and durable; valued for under-ground work. 

 The bark furnishes easily a valuable material for cordage. The tree 

 can readily be pollarded for cattle-fodder (Brandis). 



Harpullia Hillii, F. v. Mueller. 



The Tulip-Wood of Queensland. One of the most important of the 

 numerous kinds of trees indigenous there for select cabinet-work. H. 

 pendula (Planchon) is equally valuable. 



Hedeoma pulegioides, Persoon. 



The Penny-royal of Eastern North-America. An annual herb of 

 aromatic taste, employed in medicine. The volatile oil is also in use. 



Hedera Helix, Linne". 



The Ivy. Europe, Northern Africa, Western Asia as far as the 

 Himalayas. Not to be omitted here, as it quickly forms evergreen 

 walls over all kinds of fences and on sides of buildings without 

 injuring any masonry; it is also a bee-plant for honey. Individual 

 plants will live through several centuries. The variety with yellow- 

 marked leaves is singularly .ornamental. Resists the smoky air of 

 cities (London). Hederic acid is of medicinal value. A decoction of 

 the leaves dyes hair black. 



Hedysarum coronarium, Linne".* 



The Soola-Clover. Southern Europe, Northern Africa. One of 

 the best of perennial fodder-herbs, yielding a bulky return. It is also 

 recommended as quite a handsome garden-plant. 



Heleocharis sphacelata, R. Brown. 



Australia, New Zealand and South-Sea Islands. This rush is well 

 deserving, to be transferred to any swamps in warmer climes on account 

 of its nutritious and palatable tubers. 



Heleocharis tuberosa, Roemer and Schultes. 



China, where it is called Matai or Petsi. This rush can be sub- 

 jected to regular cultivation in ponds for the sake of its edible whole- 

 some tubers. H. plantaginea (Brown) and H. fistulosa (Schultes) of 

 tropical Asia and Madagascar are allied plants. 



Helianthus animus, Linne".* 



The Sun-Flower. Peru. This tall, showy and large-flowered 

 annual is not without industrial importance. As much as fifty bushels 

 of seeds, or rather seed-like nutlets, have been obtained from an acre 

 under very favorable circumstances, and as much as fifty gallons of 

 oil can be pressed from such a crop. The latter can be used not only 

 for machinery, but even as one of the best for the table; also for 

 superior toilet-soaps and for painting ; it belongs to the series of 

 drying-oils. Otherwise the seeds afford an excellent fodder for fowl; 



