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characteristics. 1 have seen in the Edinburgh Botanic Garden, and 

 elsewhere, plants of Cerastium alpinum raised from roots from Clova, 

 in which the leaves were linear-lanceolate, and hardly to be distin- 

 guished from those of some narrow varieties of C. triviale or atro- 

 virens ; yet no one would for a moment dream of considering this a 

 normal form. I cannot help thinking that Mr. Watson is misled, 

 partly by the garden plants he alludes to, and partly by seeing some 

 variations in the form of the leaves of the Scotch plants : thus he 

 says that in "a specimen of C. latifolium (of British authors), ga- 

 thered on Ben Lawers, there are lanceolate-ovate or almost orbicular 

 leaves from the same root." I have seen considerable difference in 

 the breadth of leaves of C. alpinum, but the nearest approximation 

 to " orbicular " I have ever met with was somewhat broadly-ovate, 

 and the character "ovate or ovato -lanceolate" includes all the vari- 

 eties I have seen in wild specimens. My C. latifolium has come up 

 in the old station, within a few hundred yards of my residence, by 

 thousands, this year ; and in examining numerous individuals some 

 days ago, for the purpose of making a drawing and description of it 

 for the ' Supplement to English Botany,' I am more than ever struck 

 with the great difference in colour, habit, &c., as well as more important 

 points and differences. I shall be happy to supply any of your cor- 

 respondents with specimens of this interesting plant. — Id. 



341. Unusual habitat of Limosella aquatica. In the few localities 

 in which I had gathered the Limosella previously to the present 

 month, the plant was growing either wholly in water, or on the sides 

 of pools and ditches which had recently been under water. Yester- 

 day I found about a dozen specimens of this plant, just coming into 

 flower, on the surface of my kitchen garden, intermingled with young 

 plants of Veronica Buxbaumii ; the seeds of the latter having been 

 sown by myself, on the same spot, in the month of May, at which 

 time no plants of the Limosella were observed, nor had I ever before 

 seen this species in my garden. The ground has been used as a 

 kitchen garden for the last eight years, and was several years in cul- 

 tivation as arable land before its conversion into a garden. It was 

 originally marshy, but was drained and enclosed many years ago, and 

 is now so little disposed to retain its former character, that my gar- 

 dener usually finds it necessary to water his crops copiously in spring 

 and early summer. In the present year, however, abundant and al- 

 most daily rains through a part of May and June, kept the ground 

 more humid than was desired ; and apparently the seeds of the Li- 

 mosella had germinated during those weeks of wet weather. How 



