Transported into gardens in the colonies, the strawberry has become naturalized in a few cool localities far from dwellings. This is the case in Jamaica,[1006] in Mauritius,[1007] and in Bourbon, where some plants had been placed by Commerson on the table-land known as the Kaffirs’ Plain. Bory Saint-Vincent relates that in 1801 he found districts quite red with strawberries, and that it was impossible to cross them without staining the feet red with the juice, mixed with volcanic dust.[1008] It is probable that similar cases of naturalization may be seen in Tasmania and New Zealand. The genus Fragaria has been studied with more care than many others, by Duchesne (_fils_), the Comte de Lambertye, Jacques Gay, and especially by Madame Eliza Vilmorin, whose faculty of observation was worthy of the name she bore. A summary of their works, with excellent coloured plates, is published in the _Jardin Fruitier du Muséum_ by Decaisne. These authors have overcome great difficulties in distinguishing the varieties and hybrids which are multiplied in gardens from the true species, and in defining these by well-marked characters. Some strawberries whose fruit is poor have been abandoned, and the finest are the result of the crossing of the species of Virginia and Chili, of which I am about to speak. +Virginian Strawberry+—_Fragaria virginiana_, Ehrarht. The scarlet strawberry of French gardens. This species, indigenous in Canada and in the eastern States of America, and of which one variety extends west as far as the Rocky Mountains, perhaps even to Oregon,[1009] was introduced into English gardens in 1629.[1010] It was much cultivated in France in the last century, but its hybrids with other species are now more esteemed. +Chili Strawberry+—_Fragaria Chiloensis_, Duchesne. A species common in Southern Chili, at Conception, Valdivia, and Chiloe,[1011] and often cultivated in that country. It was brought to France by Frezier in the year 1715. Cultivated in the Museum of Natural History in France, it spread to England and elsewhere. The large size of the berry and its excellent flavour have produced by different crossings, especially with _F. virginiana_, the highly prized varieties _Ananas_, _Victoria_, _Trollope_, _Rubis_, etc. +Bird-Cherry+—_Prunus avium_, Linnæus; _Süsskirschbaum_ in German. I use the word cherry because it is customary, and has no inconvenience when speaking of cultivated species or varieties, but the study of allied wild species confirms the opinion of Linnæus, that the cherries do not form a separate genus from the plums. All the varieties of the cultivated cherry belong to two species, which are found wild: 1. _Prunus avium_, Linnæus, tall, with no suckers from the roots, leaves downy on the under side, the fruit sweet; 2. _Prunus cerasus_, Linnæus, shorter, with suckers from the roots, leaves glabrous, and fruit more or less sour or bitter.