CtASS XII. ORDia II.] ' PYHUS. 695 



at the base; the lobes oblong, lanceolate, entire or serrated towards the 

 point, downy beneath ; flowers in dense flat corymbs. 



English Botany, t. 2331. English Flora, vol. ii. p. 366. Lindley, 

 Synopsis, p. 105. P. Aria, var. @. pinnatifida. Hooker, British 

 Flora, ed. 4. vol. i. p. 197. Sorbus hybrida, Linn. 



A moderate sized tree, clothed with a smooth grey bark, the branches 

 towards the ends downy. Leaves alternate, numerous towards the ex- 

 tremities of the branches, oblong and serrated, and towards the base 

 cut into oblong lanceolate entire or serrated lobes, in a pinnated or 

 pinnatind manner, smooth abore, white and cottony beneath, as well 

 as the footstalks. Stipules small, awl-shaped, soou falling away. 

 Inflorescence a large flat topped corymb, of numerous white flowers, 

 the branches and calyx white, with woolly pubescence. Petals roundish 

 ovate, with a short claw. Stamens with linear awl shaped filaments, 

 and ovate two celled anthers. Styles three or four. Fruit globular, 

 scarlet, mealy, with the same number of cells as styles. 



Habitat. In rocky situations ; Isle of Arran, and near Dartford. 



Tree ; flowering in June. 



** Leaves pinnate. 



6. P. aucupa'ria, Gcertn. (Fig. 792.) Quicken-tree, Mountain Ash 

 or Rowan-tree. Leaves pinnated, smooth ; leaflets in pairs, acutely 

 serrated ; flowers corymbose ; fruit small, globose. 



English Flora, vol. ii. p. 365. Hooker, British Flora, ed. 4. vol. i. 

 p. 197. Lindley, Synopsis, p. 106. Sorbus, aucuparia, Linn. 

 English Botany, t. 337. 



A tall handsome tree, with straight not much divided branches, the 

 bark smooth, shining, reddish brown, the branches round, smooth grey. 

 Leaves alternate, with a long round common footstalk. Leaflets 

 elliptic, acute, nearly sessile, about an inch long, unequal at the base, 

 in about eight pairs, and a terminal one, a smooth cheerful green above, 

 pale beneath, at first downy, becoming smooth, the mid-rib stout, with 

 slender lateral branches. Inflorescence a terminal corymb, of nume- 

 rous white flowers, the branches much divided and downy, the lower 

 ones often accompanied with leaves. Calyx with acute segments! 

 smooth at the points. Petals roundish, concave, with a short claw. 

 Stamens with awl-shaped^i/aTnenfs, and roundish ovate anthers, of two 

 cells. Styles three or four, shorter than the stamens, the stigmas 

 obtuse. Fruit scarlet, globose, very juicy, sour and bitter, with as 

 many two seeded cells as there are styles. 



Habitat. Mountains and Woods, not unfrequent ; especially in the 

 Highlands of Scotland. 



Tree ; flowering in May and June. 



The Mountain Ash, so called from its growing in mountainous 

 situations, where, as Virgil sings 



" Nature seems t' ordain 

 The rocky cliff for the wild ash'i reign." 



