Naturalisation in Extra- Tropical Countries. 



G-revillea annulifera, F. v. Mueller. 



West- Australia. A tall bush or small tree, with highly orna- 

 mental flowers. The seeds are comparatively large, of almond- 

 taste, and the fruits produced copiously. The shrub will live in 

 absolute desert-sands, where the other Australian proteaceous Nut- 

 tree, Brabejum (Macdamia) ternifolium, could not exist. Well 

 may we plead, that enlightened statesmanship should lastingly 

 preserve at least on a few chosen spots also in South- Western 

 Australia all the splendid Grevilleas and hundreds of other gay or 

 remarkable plants, quite peculiar to that part of the world, where 

 the endemism of vegetation is more singularly and strongly con- 

 centrated than anywhere else on the globe, unless in South- Africa 

 and California ; so that future generations also may yet be able, to 

 contemplate at least the local remnants of a world of plants as 

 charming as it is diversified and peculiar, before many of its constitu- 

 ents succumb by aggress of herds and flocks altogether. 



G-revillea robusta. Cunningham.* 



A beautiful lawn-tree, indigenous to the sub-tropical part of 

 East- Australia, rising to 150 feet, of rather rapid growth, and 

 resisting drought in a remarkable degree ; hence one of the most 

 eligible trees, even for desert-culture. Cultivated trees at Mel- 

 bourne yield now an ample supply of seeds. The wood is elastic 

 and durable, valued particularly for staves of casks, also for 

 furniture. The richly developed golden-yellow trusses of flowers 

 attract honey-sucking birds and bees through several months of 

 the year. The seeds are copiously produced and germinate readily. 

 Rate of growth in Victoria. 20-30 feet in 20 years. In Ceylon it 

 attained a stem-circumference of 5 feet in eight years. In India it 

 flourishes at elevations from 2,000 to 7,000 feet 



G-rindelia squarrosa, Dunal. 



North-America in the middle-regions, but extending also far 

 northward. A perennial balsamic herb, praised for medicinal 

 virtues in its native lands. Several congeners occur from California 

 and Mexico to Chili and Argentina. G. robusta (Nuttall) serves 

 therapeutic purposes in California, its use being particularly effec- 

 tive in asthma and bronchial affections [Dr. Gibbons]. Some 

 congeners occur as far south as Chili and Argentina. 



Guadua augrustifolia, Kunth.* (Bambusa Guadua, Humboldt and Bon- 



pland.) 



New Granada, Ecuador and probably others of the Central 

 American States. This Bamboo attains a height of 40 feet, and 

 might prove hardy in sheltered places of temperate low-landsr 

 Holton remarks of this species, that it is, after the plantain, maize 

 and cane, the most indispensable plant of New Granada, and that it 

 might be called the lumber- tree, as it supplies nearly all the fencing 



