Page:Journal of botany, British and foreign, Volume 9 (1871).djvu/284

 2fJ0 ON THE DISPEKSIOX OF MONTANE PLANTS

r'uiea, Koch), which may be perhaps best ph\ced between Pencedanea: and Daiicbu'ce.

[Note. — Slle?' trllobam has been so often confounded by botanical Avriters with a species (or perhaps two) of Lmerpitlnm, that, as a supple- ment to the synonymy above <>iven, it will be well to add that of L. alpinum, W. and K. The confusion has arisen in the absence of ripe fruit, from the great similarity of foliage ; the carpels in Laaerpltiuht have the secondary ribs expanded into membranous wings.

Laserpitium alpin/n/f, yVaidst. and Kit. PL Kar. Hung. t. 253. L. tri- lobiim, L. (ex parte), Crantz, Austr. f. 3. p. 187; Rochel, PI. Banat. Rar. p. 5, and tab. xxvii. fig. 53; Tjapeyr. Abr. Pyren. 151 (non auct. alior.). L. a qnilefji folium, De Cand. Fl. Franc, v. p. 510, and Prod. iv. 201?; Brot. Fl. Lusit. i. 427 ? (non Jacq.). Siler «//;/»«/«, Baumgartn. En. i. n.495. L. Nestleri, Soyer-VVillemet, Obs. Bot. (couf. Gren. and Godr. Fl. Franc, i. p. 680).

Whether the Pyreiifean plant is distinct from the Austrian is an unde- cided point. Nyinan in his ' Sylloge' keeps them separate, but I cannot trace any very good characters. Soyer-VVillemet's ' Observations,' which would no doubt throw great light on the subject, I have not been able to see.]

ExpLAXATiov OF Plate CXVIII. — Siler trilobum, Scop. Fig. 1. Portion of root-leaf. Fig. 2. Portion of umbel with nearly ripe fruit. Fig. 3. Section of nearly ripe fruit x 7. Fig. 4. Flower x. Fig. 5. Ripe fi-uit x 2. Fig. 6. Trans- verse section of ripe fruit x 2. Fig. 7. Commissure of I'ipe carpel x 2. Figs. 1, 2, and 3, from sjiecimens collected by Dr. Trimen in July 1S71 at Cherry Hinton; near Cambridge. Fig. 4 altered from Jacquin's Ic. Fl. Austr. Figs, 5, 6, and 7, from Styrian specimens in the herbarium of the British Museum.

��ON THE T)ISPERSIOx\ OP MONT.\NE PLANTS OVER THE HILLS OF THE NORTH OF ENGLAND.

By J. G. Baker, P.L.S.

We have in the North of England four separate tracts of hilly country, in each of which, over a considerable extent of surface, a particular kind of rock, or more than one kind combined, are accumulated in masses so that each area presents distinctly marked orographic and lithological cha- racteristics. The l)otany of each of these four ranges has now been very thoroughly explored, so that I believe we may safely take for granted that very little still remains to be done in ascertaining which of the Montane species grow in each of the four areas, and which are absent. I pro|)ose, therefore, in the present paper to go through the list of Montane planls, and examine how they are distributed through the four masses, not quoting special stations in detail, as these are mostly in print already, but simply noting in brief general terms the rarity or commonness of the plant in each particular tract, and indicating which of the species of the two Boreal- montane types have made themselves at home in some of the ranges, but are absent from others ; so as to bring together in one view a compendious summary of the facts of the sui)ject.

The fouy ranges of hill may be named and characterized as follows, viz. : —

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