246 NOTES ON CAMBRIDGESHIRE PLANTS. 



South Norway, and North America. Limpricht cites some half- 

 dozen locahties in which the fruit has been found. 



Explanation of Plate 387.— Fig. 1. Portion of stem, x 25. 2. Ditto, from 

 slender pLant, x 25. 3. Apex of leaf, x 135. 4. Portion of stem with most of 

 the leaves removed, x 135. 5. Ditto, of P. pnlchellum var, nitidulum, x 135. 

 6. Cells from upper third of leaf, x 225. 7. Ditto, of P. imlchcllum var. nitid- 

 ulum, X 225. (Figs. 1, 3, 4, 6. Ben Narnain, J. Murray. Fig. 2. Craig Chail- 

 leach, H. N. Dixon.) 



NOTES ON CAMBRIDGE SHIEE PLANTS. 

 By W. West, Jun., B.A. 



These notes are the result of observations made while in 

 residence at Cambridge during 1892-6. Since the appearance 

 of Prof. Babington's Flora of Cambridgeshire in 1860, much in- 

 vestigation on the distribution of plants in the county has been 

 carried out; but, apart from Mr. Fryer's extensive researches into 

 Potamogeton, the published records have in the main been isolated 

 ones. The Flora, in the compilation of which the Rev. W. W. 

 Newbould had so large a share, is a most exhaustive catalogue. 

 This is especially true of the southern half of the county, where 

 new stations are seldom discovered. The late Professor kept an 

 annotated copy of the Flora, which, up to the time of his death, 

 was placed (along with the original MS. of the Flora) in the 

 University Herbarium. It was carefully posted up, certainly to 

 1885, and I believe till a later date. On a recent visit I found 

 that (along with the MS.) it had been removed. The matter is 

 mentioned here because I wish to point out that the records con- 

 tained in the annotated copy must be carefully examined with a 

 view to inclusion in any future Flora of the county. Some of them 

 are now obtainable from no other source ; but the more noteworthy 

 ones were accompanied by specimens which can be seen in the 

 Herbarium at Cambridge. These include such interesting Cam- 

 bridgeshire plants as Lactuca saligna, Veronica sjncata, Teucrium 

 Scordium, &c. 



That the flora of Cambridgeshire is so interesting is due almost 

 as much to the absence or rarity of many common plants as to the 

 occurrence therein of so many rare species. Digitalis jiurpurea 

 and Latliyrus montanus are absent from the county, as are Chryso- 

 splenium oppositifolium, Vaccinium Myrtillus, Viola pahcstris, Neckeria 

 clavicidata, Scirpiis sylvaticus, &c. 



The following are markedly rare in the county ; indeed, it is 

 doubtful whether the first five still occur : — Gnaphalium sylvaticum, 

 Erica cinerea, E. Tetralix, J uncus squarrosus, and Lomaria Spicant ; 

 Sisymbrium Thalianum, Montia fontana, Lychnis dioica, Hypericum 

 humifusum, R.pulchrum, Oxalis Acetosella, Ilex Aquifolium,, Trifolium 

 medium, Alchemilla vulgaris, Rubus Idmus, Drosera rotundifolia, Adoxa 

 Moschatellina, Galium saxatile, Asperula odorata, Valerianella olitoria, 



