LEGUMENIFERZ. 15 
Section I.—BUGRANA. JD. C. 
Peduncles very short, 1-flowered, without an articulation 
beneath the flower. 
SPECIES I—ONONIS CAMPESTRIS. och. 
Puate CCCXXX. 
Bab. Man. Brit. Bot. ed. v. p. 74. 
Koch & Ziz. Cat. Pal. 22 (non Sied.). Gr. & Godr. Fl. de Fr. Vol. I. p. 373. Fries, 
Sum. Veg. Scand. pp. 48, 162. 
O. arvensis, Sm. Eng. Bot. No. 682. 
O. arvensis, var. 3, Hook. & Arn. Brit. Fl. ed. viii. p. 97. Benth. Handbook Brit. Fl. 
p. 160. 
O. spinosa, Linn. Koch, Syn. Fl. Germ. et Helv. ed. ii. p. 173. 
Rootstock short, not creeping, without subterranean stolons. 
Stem erect or ascending, firm, much branched, generally (but not 
always) with a number of spreading spines which are frequently 
in pairs, slightly glandular-hairy, with a woolly strip on one side, 
which changes sides at each node. Lower leaves trifoliate, the 
upper ones generally unifoliate; leaflets linear-oblong, denticulate. 
Flowers solitary and axillary, chiefly on the bases of the spines, in 
an elongated panicle or raceme towards the upper part of the 
branches. Peduncles shorter than the calyx. Calyx with its 
segments nearly equal, shorter than the mature pod. Corolla 
much longer than the calyx. Pod erect, lenticular-ovoid, laterally 
compressed. Seeds 1 to 3. 
On commons, barren pastures, and road-sides. Plentiful in 
England, but apparently more rare in Scotland, where it has not 
been recorded northward of Haddingtonshire and Dumbartonshire ; 
possibly it occurs in Forfarshire; but there it may be the spinous 
variety of the following species. 
England, Scotland, Ireland. Perennial. Summer and Autumn. 
Rootstock short, woody. Stems stiff, purplish, with ascending or 
erect branches, 1 to 2 feet high. Spines + to 1 inch or more long, 
spreading, leafy at the base, as it is only the apex of these stunted 
branches which become barren. Leaves shortly stalked, with 
large conspicuous oblong adnate stipules, which have a free ovate- 
acuminate apex; leaflets stalked, oblong or strap-shaped, + to 
= inch long, with very prominent lateral veins, each of which is 
excurrent into one of the teeth. Calyx with 5 strap-shaped lan- 
ceolate equal teeth longer than the tube. Flowers 3 inch long, 
pale rose-colour, with deeper-coloured lines, darker on the apex of 
