OKOBANCHACEJE. 387 



■whole of Europe. Not uncommon in some parts of England, chiefly on 

 Sroom, more rarely on Furze. Fl. early summer. 



2. Clove-scented Broomrape. Orobanche caryophyllacea, Sm. 



(Eng. Bot. Suppl. t. 2639.) 



The colour of the plant and size of the flowers are those of the greater B., 

 hut the stem is seldom above 8 or 9 inches high ; the flowers are much 

 fewer, and further 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 Galiums ; common on the continent of Eu- 

 rope, extending across the whole of Asia. In Britain limited hitherto to a 

 very few of the southern counties of England. Fl. early summer. 



3. Red Broomrape. Orobanche rubra, Sm. 



(Eng. Bot. t. 1786, not good.) 



A rather smaller plant than the clove-scented B., which it resembles in 

 the shape of the flowers, but these are nearer the size of those of the 

 lesser B., and the whole plant assumes a very red-brown colour. Calyx 

 usually divided into 2 entire sepals with narrow points, but these are some- 

 times again divided, although very unequally, or united in front at the base, 

 as in the lesser B. and other species. 



On the roots of Thyme, in central and southern Europe. In Britain, 

 only on the basalt and trap-rocks in Scotland and Ireland. Fl. summer. 



4. Tall Broomrape. Orobanche elatior, Sutt. 



(Eng. Bot. t. 568.) 



Closely resembling the greater B. 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 the greater Centaurea, and not on Peajlower shrubs ; said to be 

 more abundant tlian the greater B. in eastern Europe, but rare in Eng- 

 land. Fl. summer. 



5. Iiesser Broomrape. Orobanche minor, Linn. 

 (Eng. Bot. t. 422.) 



Often small, and always more slender than any of the preceding species, 

 with smaller flowers. Generally of a light brown or yellowish colour, with 

 more or less of bluish-purple in the flowers, although not running into tl e 

 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 the greater and the clove-scented B. Stamens more or 

 less hairy in their lower part. 



One of the widest-spread species over Europe and Kussian Asia, grow- 

 ing on a great variety of plants. In Britain, not uncommon in southern 

 and cenfcl^l England, and southern Ireland. Fl. all summer. It variea 

 according to station, and the plants it affects. Many of these varieties have 

 been considered us species, amongst which three are commonly admitted 



