From the starting point of what is called species to the last form which this may take, in order to constitute varieties, the limits which are extremely variable cannot be fixed; in truth, every day they are presented in such different varieties of the individual one from which they sprang, that if the origin was not known they would be taken, without doubt, for a peculiar species. There are, however, some genera whose species, always few, yield to little modification; there are others, on the contrary, which seem disposed to vary, to metamorphose themselves into the most diverse forms. We shall return to this subject in future articles, when we treat the different questions of genera, species, hybrids and varieties; just now we shall only discuss the one figured before us.

The Cupreuus fastigiata cereiformis: Carriere,.Cupres8U8 Fernandii Calumnatus hortorum very remarkable for both its bearing and appearance, is so from its mode of vegetation; in its bearing it recalls the general form of the Cuprcssus fastigiata, from which it sprang, although it is perceptibly different; in its mode of growth it is separate from it, as well as from the other varieties, and forms a peculiar type - a sort of monstrosity which must remain permanent, since it is reproduced from seeds. The very singular character which constitutes and distinguishes clearly this variety, is the complete and constant abortion of all the branches and their transformation into twigs, small and growing so closely together as entirely to hide the stem; on either side as they lay compactly along this, the whole forms a very straight column, which gives to the plant a taper (cierge) like appearance,from whence comesthe name Cereiformis. The specimen growing at the museum, and from which our picture is drawn, is 8 years old; it measures 11 feet and an inch in height, 8 inches in diameter, comprising stem and branches, a diameter which is preserved through nearly its entire length, except near the top, where it tapers and ends in a very small point.

We are indebted to Mr. Ferrand, Horticulturist at Cognac, for it, the only owner of this form, which he procured about 1838. He owns specimens of different ages and strength, which all have the same character; that is to say, that instead of more or less strong branches, they have only twigs. This last peculiarity is not, as one might suppose, occasioned by a want of vigor, since some very vigorous specimens 40 feet high are only 2 feet in diameter, everything included, in which size the stem makes one-third, or 8 inches. There are seeds of this last which, when sown, have produced specimens of different ages owned by Mr. Ferrand, and which he now offers to the trade. The unusual form of this variety makes it indispensable in coniferous collections.

Let us add, to give as just as possible an idea of the Cupressus fas-tigiata cereiformis, that the plate before us is reduced to the 20th of its natural dimensions. - Revue Horticole.