ON TRITICUM PUNGENS. 359 
Quitting a and passing to the $2 alg as yet very 
imperfectly known, of these two grasses in Britain, we may suspect 
ab T. pungens is x aerial the commoner bar ‘and more widely 
distributed, at least in Englan 
. Syme has seen specimens of pungens from Devon, Wight, 
Sussex, Kent, and Essex. I have collected it myself in Hants, 
line. At Littlehampton where dunes of shifting sand diversify and 
occupy the coast, here, in the head-quarters of its ally, pungens becomes 
= ratively rare. On the Cheshire coast, which north of Parkgate 
ore resembles the seaboard at Littlehampton than at Brighton, it is 
ae cates in great profusion. I should name Sclerochloa maritima as 
its most — associate. 
r, Syme appears to regard acutum as the more wi idely-dis- 
tributed plant of the two, and gives no detailed distribution, 
d. But 
sn een speci from north of St. Andrews, Fife, and 
Cumberland. I have seen freshly-gathered specimens from Lancashire, 
and sea from K men), and I have gathered the plant 
a 
and Sussex. At Littlehampton on both sides of the river 
it may. be studied to great perfection. It occupies much the sort of 
shifting bank and sandhill which suits Ammophila, which may be 
taken as its a companion. I never saw Ammophila between 
Brighton and Worthing. 
Taken as an Amen these - 808: a constitute a single 
good species, possibly two good on I cannot combine them as 
ym 
junceum. The leaf-texture and armature kee eep repens speci ‘fleall 
apart from pungens and acutum he organic difference implied by 
in that direction. Its larger, fewer spikelets, narrower, more involute 
and densely hairy icone ultimately glabrous) a aan supply besides 
good secondary charact 
Description of Triticum pungens, Koch., as a sub-species.—Root- 
stock far-creeping, but penetrating to no great depth, producing 
rather close tufts of barren and flowering stems. Stems growing 
many together, phawghe hardly San ihaes. very erect, strongly genicu- 
highly magnified, We zeue sant forcibly by these “side views” the much 
prominence of ri pet littorale Oe ?) and junceum 
present as con Bi ae aides ana num, ug ger touch makes 
this evident enough. Sonate appea on selon a thickly co covered with long 
goon: hairs, which, however, the as says soon fall off, 
suppose Prof, Babington’s var. littorewmn of 7. repens (omitted in the 
eat edition of the Manual) may be held to fall under pungens somewhere, 
