Aster. | XLII. COMPOSITA. 227 
shorter than the florets and the pappus. Achenes compressed and 
silky as in other Asters. Linosyris vulgaris, Cass. 
In clefts of rocks and on stony hills, and especially along gravelly 
banks of great rivers in south, central, and western Europe, to the 
Caucasus, not extending into northern Germany, although reappearing 
- on the Isle of: Oeland, in the Baltic. In Britain confined to a few 
limestone cliffs on the southern and western coasts of England and 
Wales. Fl. end of summer, or autumn. 
An Aster with flat lanceolate occasionally toothed leaves, and loosely 
corymbose radiating flower-heads, has been found on the banks of the 
Tay, near Perth, and in Wicken fen in Cambridgeshire, and has been 
referred to A. salignus, Willd. ; the specimens, however, do not appear 
to me to represent the German plant of that name, but rather a garden 
variety of A. longifolius, Lam., a species long in cultivation, and which 
probably in the above localities is an escape from some garden. [The 
true A. salignus has, however, been found as an escape from cultivation 
in Cambridgeshire. 1 
es 
III. ERIGERON. ERIGERON. 
Differs from Aster in the involucral bracts very narrow and numerous, 
and in the outer florets very numerous and much narrower, either form- 
ing a short coloured ray, or almost filiform and not projecting beyond 
the involucre and pappus. The regular, tubular, yellowish florets in 
the centre often reduced to very few. 
Its geographical range is even more extended than that of Aster, for 
several species are natives of the tropics; some are found in the 
extreme Arctic regions, or on the summits of the Alps, whilst others 
spread as weeds nearly all over the globe. 
Outer florets almost filiform, not projecting beyond the involucre. 
‘Heads very numerous, and small ; 8. E. canadensis. 
Outer florets (some or all) forming a shortly projecting coloured 
ray. 
Annual or biennial. Flower-heads several, or rather long 
peduncles. Ray erect, very little longer than the disk oy cA jaeris: 
Perennial. Flower-heads solitary or very few. Ray spreading, 
considerably longer than the disk . . : . 2, B. alpenus. 
Several large-flowered American species are occasionally cultivated 
In our flower-gardens. 
1. E. acris, Linn. (fig. 500). Fleabane #.—An erect annual or biennial, 
6 inches to a foot high, slightly branched, and rather rough with short 
hairs. Leaves linear or lanceolate and entire, the radical ones stalked, 
but usually withered away at the time of ‘flowering. Flower-heads 
rather small, solitary on the peduncles or upper branches, forming a 
short, loose panicle. Florets very numerous, mostly filiform and: short, 
the outer rows of a pale purple, projecting slightly beyond the invo- 
lucre and pappus, the tubular ones of the centre very few, of a pale 
yellow. 
In pastures, on banks, roadsides, and waste places, common in the 
greater part of Europe, from the Mediterranean to the Arctic regions, 
and in central and Russian Asia. Less frequent in England and 
Ireland, and rare in Scotland. Fl. summer and autumn. It varies much 
