DISTRIBUTION OF FESTUCA RUBRA IN BRITAIN. 329 
inférieures geminées, quelquefois solitaires. Fipillets velus, oblongs, applatis, 
longs dun demi pouce, composés de six fleurons longs de quatre lignes, 
surmontés d'une aréte très courte." 
There has been some difficulty in placing F. oraria Dumort. Dumortier 
describes it under /. rubra (1823, p. 105), but he later (1868, p. 366) 
discusses this grass in relation to certain others. He denies that it is 
equivalent to F. arenaria Osb., and to F. juncifolia St. Am., but not to 
F. sabulicola Duf., for which he claims priority. The two last-named plants, 
however, appear to be identical, and were considered so by Hackel. Through 
the kindness of Dr. A. B. Rendle of the British Museum (Natural History) 
the type-specimen has been obtained from Brussels and examined by the 
author, who is satisfied that it is not F. juncifolia St. Am. (nor F. sabulicola 
Duf., nor F. dumetorum Hack.). On the whole it must be regarded as a 
large-glumed form of F. arenaria Osb., in spite of Dumortier’s protestations 
to the contrary, since it agrees more closely with this than with any other of 
the vars. of F. rubra. It is a stoloniferous plant with foliage of the F. rubra 
type and culm about 80 cm. high. Its panicle is 17 cm. long, effuse ; spikelets 
13 mm., 4-7 flrs., pedicels 1°5-3:0 mm. long, sterile glumes unequal, fertile 
ones -7'5 mm. long, villose, aristate. The size of F. rubra, arenaria varies 
considerably. Thus whilst in our British plants the glumes average 6°5 mm. 
in length, those of Linnzeus’ specimen gathered in Lapland are only 5:0 mm. 
long, and similar reduction in size is seen in plants from Spitzbergen and 
Novaya Zemlya. 
The author expresses his indebtedness to Mr. A. J. Wilmott for criticism 
and valuable suggestions in revising the MSS., also his thanks to those who 
have either supplied fresh material, or dried plants from their herbaria : 
Prof. R. S. Adamson, Dr. G. C. Druce, W. P. Hiern, F.R.S., and 
C. E. Salmon. 
BIBLIOGRAPHY. 
1. ANDERSSON, N. J. H. 1852, Graminæ Scandinavim. 
. ASCHERSON, P. F. A., & P. GRAEBNER. 1900, Synopsis der Mitteleuropüscher Flora, 
II.-i. 
. DanixGTON, C. ©. 1922, Manual of British Botany, ed. A. J. WILMOTT. 
. Baum, J. 1650, Historia Plantarum Universalis, vol. ii. 
. Borrau, A. 1857, Flore du centre de la France, ed. ILI. t. 2. 
. Boranıcat, EXCHANGE CLUB of the British Isles, Reports for a. 1884; à. 1907; 
c. 1908; and d. vol. iii. pt. l; e. pt. 2; f. vol. iv. pt. 25 g. pt. 3; A. vol. v. 
pt. 1. 
. BRÉBISSON, A. 1859, Flore de la Normandie, ed, 3. 
. CANDOLLE, A. P. pe. 1805, Flore Française, ed. III. t, 3. 
. DnvcE, G. C. 1914, Hayward’s Botanist's Pocket Book, 14th ed. 
10. Durour. 1825, in Annales des Sciences Naturelles, ser. I. v. 
LINN. JOURN.—BOTANY, VOL. XLVI. 2B 
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