DISTRIBUTION ON FESTUCA RUBRA IN BRITAIN. 319 
F. duriuseula, dumetorum Sm. 1798, t. 470 in text; 1800, p. 115. 
Schrad. 1806, p. 328. 
St. Am. 1821, p. 10. 
» » Gaud. 1328, p. 109. 
F. barbata Schrk. 1792, p. 46. 
Tufted growth as vulgaris; radical leaves 0'7-L’l mm. diam. (Pl. 26. 
fig. 4e); panicle 11-14 em. long; spikelets 8-11 mm. long, bearing 4-7 
flowers; glumes shortly pubescent. ^ Connected with the type through 
various intermediate stages. Some forms have large glumes as in grandiflora. 
Distributed in v.c's. 10, 12, 18, 19, 20, 27, 32, 49, 55, 59, 62, 65, 66, 70. 
Found in the grasslands of sandy and gravelly soils, and on maritime sands, 
where it needs to be carefully distinguished from subvar. arenaria. 
29 
LE] 3) 
(f) PLANIFOLIA. 
F. rubra, eu-rubra, var. 2 (7) plunifolia Hack. 1882, p. 140. 
F. planifolia Richt. Pl. Europ. p. 100. 
Plant large. Stock widely ereeping. Sheaths entire, glabrous or hairy. 
Laminæ all flat, 2-3 mm. broad (Pl. 26. fig. 4f), many-nerved, separate 
subepidermal sclerenchymatous strands, motor cells present. Panicle large, 
loose, multispieulate ; spikelets 9-10 mm. or more long, lanceolate, many- 
flowered, green or violaceous ; glumes mostly broad-lanceolate, shortly 
awned. 
In mode of growth very similar to F. pratensis (Huds. 1762, p. 37) and 
often confused with it, but the latter has split sheaths. Only two localities 
in Britain are recorded for this plant: Braunton, N. Devon, v.c. 4, and 
sandhills between Marske and Saltburn, N.E. Yorks, v.c. 62. 
(y) JUNCEA. 
F. rubra, eu-rubra, genuina, subvar. 8. juncea Hack. 1882, p. 139. 
F. rubra, juncea Richt. Pl. Europ. p. 99. 
„ duriuscula Aschers. & Graeb. 1900, p. 498. 
Very widely creeping. Lamine of radical leaves juncaceous (0'8-1'2 mm. 
diam., Pl. 26. fig. 4g), rigid, glaucescent, subepidermal sclerenchymatous 
strands strongly developed ; panicle mainly large, somewhat lax, 5-11 cm. 
long ; spikelets large (9-10 mm. long), smooth, light greyish-green or with 
reddish hue; glumes in some forms 6'0 mm. or more long, shortly awned. 
Undoubted specimens come from New Romney, Kent, v.c. 15, and Instow, 
N. Devon, v.c. 4. Others have been collected by the author from the 
Lancashire coast, v.c. 59 and 60. In the different herbaria are forms 
labelled “ arenaria” and “ sabulicola” which may belong to juncea, but it 
will be found that in patches of arenaria forms appear which have smooth 
glumes and yet are to be regarded as glabrous forms of arenaria, connected 
with this variety through various sub-glabrous stages. British collectors 
