Naturalisation in Extra-Tropical Countries. 93 



Calotropis gigantea, R. Brown. 



Continental and Insular India, up to 3,000 feet. Southern China. 

 Finally a small tree. Easily cultivated ; content with poor dry soil. 

 The fibre of the inner bark is of silky lustre and great strength, 

 woveu into superior fabrics, locally much used for nets and fishing 

 lines, as resistant to decay in water. The sap in extensive aboriginal 

 use against various diseases, even leprosy. Dr. Duncan employed 

 the root as a substitute for Ipecacuanha [Gamble, " Indian Forester," 

 1894]. 



Calyptranthes aromatica, Saint Hilaire. 



South-Brazil. The flower-buds of this spice-shrub can be used 

 almost like cloves, the berries like allspice. Several other aromatic 

 species are eligible for test-culture. 



Calyptronoma Swartzii, Grisebach. 



West-Indies. A palm, reaching a height of 60 feet. Ascends on 

 tropical mountains to over 3,000 feet elevation. It yields the " long 

 thatch " of Jamaica, the foliage furnishing an amber-coloured roofing 

 material, neater and more durable than any other used on that island, 

 lasting twenty years or more without requiring repairs [Jenman]. 

 The generic name Calyptrogyne takes precedence. 



Camelina sativa, Crantz. 



Middle and Southern Europe, temperate Asia. An annual herb, 

 cultivated for the oil of its seeds. It is readily grown after cereals, 

 yields richly even on poor soil, and is not attacked by aphides. Mr. 

 W. Taylor obtained 32 bushels of seed from an acre, and from this 

 as much as 540 Ibs. of oil. The return is obtained within a few 

 months. The seeds serve also as food for many kinds of cage-birds 

 [Dr. RosenthalJ. Hardy in Norway to lat. 70 [Schuebeler]. 



Camellia Japonica, 



This renowned horticultural plant attains a height of 30 feet in 

 Japan. It is planted there on roadsides for shelter, shade and 

 ornament [Christie]. Out of its elements in the hottest and coldest 

 climes. The wood is used for superior xylography [Dupont]. The 

 seeds, like those of C. Sasaqua (Thunberg), are available for pressing 

 oil. C. reticulata (Lindley) from China is conspicuous for its very 

 large flowers, attaining sometimes 20 inches in circumference. Like 



C. Japonica it is hardy at Arran, flowering there far more freely [Rev. 



D. Landsborough]. In England a very large plant of C. reticulata, 

 reared in Mr. Byam Martin's conservatory, had in October, 1848, 

 removed from it 2,600 flower-buds, to allow for April, 1649, about 

 2,000 flowers to come to perfection [Sir W. Hooker]. 



