01.05.2013 Views

pdf 31 MB - BSBI Archive

pdf 31 MB - BSBI Archive

pdf 31 MB - BSBI Archive

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

164 NOTES ON A NEW SUBSPECIES OF EUPHRASIA OFFICINALIS.<br />

" When, as I have already remarked is sometimes the case, E.<br />

capituJata is eglaudular, it may at first siglit be taken for broadleaved<br />

purple- flowered E. minima, but the long jointed and not adpressed<br />

hairs on the stem, and the horizontal direction of the<br />

flowers of E. capitulata will distinguish it. The presence of glandular<br />

hairs is not constant, apparently, in any subspecies of Euphrasia.<br />

Though glandular hairs are characteristic of E. Rostko-<br />

vinna, Hayne, E. hirtella Jord., and E. capitulata mihi, yet eglandular<br />

forms of these three subspecies do occur. There are, however,<br />

other peculiarities in the pubescence which appear more constant<br />

; such are the long jointed hairs found in all the three lastnamed<br />

plants, though even these are sometimes absent as in the<br />

high alpine forms of capitidata and of Uostkoviana, the latter being<br />

named by Gremli, Euphrasia anadena (= E^iphrasia Rostkoviana /3.<br />

alpestris Gremli, olim) in his ' Neue Beitrage zur Flora der Schweiz,'<br />

Heft 4, Aarau, 1887.<br />

" Sept. 10. To-day I walked from the Grosse Scheideck to the<br />

Faulhorn. The road, at first, is nearly level for a considerable<br />

distance, but afterwards ascends within sight of the Hotel of the<br />

Grosse Scheideck, and about three quarters of an hour's walk from<br />

the latter. On the wet alpine pastures, soon after commencing to<br />

ascend, I found E. capitulata, small forms of it, about 1^ inches<br />

high ; further on the plant occurred abundantly, and I noticed it all<br />

the way onwards till within half an hour's walk of the Faulhorn<br />

Hotel. I was thus able to gather abundant specimens of this<br />

interesting plant. It has, here, the dark-green foliage which I<br />

noticed as so characteristic when I first found it at Miirren. E.<br />

minima Schleioh., occurs here abundantly also, and in company<br />

with E. capitulata. On the slopes, where the road passes close to a<br />

fence, about one hour's walk from the Scheideck, and on the south<br />

side of the fence, I found large plants of E. hirtella Jord., with its<br />

characteristic pale green foliage and pale flowers. E. capitulata<br />

evidently prefers the wetter spots and E. hirtella the drier ground.<br />

The bracts of E, hirtella are broader than those of E. capitidata<br />

and more or less cordate at the base ; the tips of the leaves and<br />

bracts have not the same tendency to curve downwards as in E.<br />

capitulata. The upper bracts of the latter have a more or less<br />

cuneate base."<br />

I have drawn up the following description of E. capitulata :<br />

Euphrasia capitulata mihi, nova subspecies = E. minima var.<br />

intermedia Towns. (Journ. of Bot. 1881, p. 167).<br />

Racemo ^ji7?s lunyis patentihus articulatis glandulosis eglandulo-<br />

sisque, e basi nigra ortis, obsito ; caule crasso humili unciali ad tres<br />

uncias, simplice vel raro infra ramoso, pilis crispidis non adpressis<br />

pilisque longis glandulosis eglandulosisque promiscue pubescente ;<br />

foliis et bracteis ovatis vel late ovatis patentihus atro-virentibus, pagina<br />

inferiure plicato-costatd, dentatis, dentibus ab utroque latere quatuor<br />

ad sex obtusis, bracteis superiuribns imbricatis, basi cuneata, dentibus<br />

acutis ; calyce glanduloso nervis virentibus sed pagina inter<br />

nervos snspe purpureo-maculosa ; corolla j^^rva, fauce flava, tubo<br />

incluso, labio superiorc lilacino inferiore magis pallido vel albo-

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!