Ovobanche.] LV. OROBANCHACEA. 321 
but not always larger than the lateral ones, and all the lobes toothed 
and wavy, although less so than in many species. The upper part of 
the style and stamens are usually covered with short glandular hairs, 
which are usually wanting in the lower parts. O. Rapum, Thuill. 
On the roots of the shrubby Legumnous plants, scattered over nearly 
the whole of Europe. Not uncommon in some parts of England, ex- 
tending to Dumfriesshire, chiefly on Broom, more rarely on Furze, rare 
in Ireland. Fl. early summer. 
2. O. caryophyllacea, Sm. (fig. 719). Clove-scented B.—The colour 
of the plant and size of the flowers are those of 0. major, but the 
stem is seldom above 8 or 9 inches high; the flowers are much fewer, 
and farther apart; the tube of the corolla is not quite so broad; 
the upper lobes scarcely spreading, and the lower ones nearly equal, 
and the stamens more hairy at the base. The flowers are usually sweet- 
scented. 
Said to grow exclusively on Galiuwms; common on the continent 
of Europe, extending across the whole of Asia. In Britain limited 
hitherto to a very few of the southern counties of England. Fl. early 
summer. 
3. O. rubra, Linn. (fig. 720). Red B—A rather smaller plant than 
0. caryophyllacca, which it resembles in the shape of the flowers, but 
these are nearer the size of those of O. minor, and the whole plant 
assumes a very red-brown colour. Calyx usually divided into 2 entire 
sepals with narrow points, but these are sometimes again divided, 
although very unequally, or united in front at the base, as in O. minor, 
and other species. 
On the roots of 7hyme, in central and southern Kurope. In Britain, 
only on the basalt and trap-rocks in Scotland and Ireland. FI. 
summer. 
4. O. elatior, Sutt. (fig. 721). all B.—Closely resembling 0. major 
in stature and flowers, of which it is probably a mere variety. It 
retains longer its pale yellow colour ; the lobes of the corolla are less 
unequal and more toothed, and the stamens are hairy in their lower 
part, and nearly glabrous above. 
On Centaurea and not on Leguminous shrubs ; said to be more abun- 
dant than 0. major in eastern Europe, in Britain it inhabits chiefly the 
eastern and southern counties, but has occurred in South Wales. Fi. 
summer. 
5. O. minor, Linn. (fig. 722). Lesser B.—Often small, and always 
more slender than any of the preceding, with smaller flowers. Gene- 
rally of a ight brown or yellowish colour, with more or less of bluish- 
purple in the flowers, although not running into the deep purple-blue 
of the two following species. It is usually from 6 to 9 inches high, 
although some of the larger specimens exceed a foot ; the lower flowers 
of the spike are at some distance from each other. Segments of the 
calyx ending in long slender points. Tube of the corolla contracted 
in the middle, much curved; the lobes of the limb larger in proportion, 
and more wavy than in 0. major and O. caryophyllacea. Stamens more 
or less hairy in their lower part. 
One of the widest spread species over Europe and Russian Asia, 
growing on a great variety of plants. In Britain, not uncommon in 
southern and central England, and southern Ireland. Fl. all summer. 
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