136 ROSACES. [PYRUS. 



2. P. Ma'lus, L. ; peduncles umbellate, style connate below, fruit 

 subglobose indented at the base. Wild or Crab-apple. 



Copses and hedges, from Perth and the Clyde southd. ; often a relict of 

 gardens ; wild in Ireland ; Channel Islands ; fl. May. A shrub or small 

 tree ; branches spreading. Leaves 1-2 in., oblong rounded acuminate or 

 cuspidate at the tip, glabrous or downy beneath when young. Flowers few, 

 1-1|? in. diam., pink and white, proterogynous. Calyx-segments woolly. 

 Fruit 1 in. diam., yellow. DISTRIB. Europe, W. Asia, Himalaya. 



P. Mains proper (P. acer'ba, DC.) ; young leaves and tube of calyx glabrous, 

 pedicels slender glabrous or nearly so, fruit drooping. VAR. mi'tis ; young 

 leaves tube of calyx and stout pedicels pubescent, fruit erect. 



SECTION 2. Sor'bus, L. (gen,). Fruit small, 2-5-celled ; cells 1-2- 

 seeded ; endocarp brittle. Flowers in compound corymbose cymes. Styles 2-5. 



3. P. tormina'lis, EhrJi. ; leaves 6-10-lobed serrate glabrous when 

 mature on both surfaces. Wild Service. 



Woods and hedges, local, from Lancashire southd. ; fl. April-May. A small 

 tree, branchlets and young leaves beneath pubescent. Leaves 2-4 in., 

 oblong-ovate or cordate ; lobes triangular, serrate, acuminate. Flower* 

 \ in. diam., many, white. Carpels usually 2. Fruit ^ in., pyriform or sub- 

 globose, greenish-brown, dotted, 2-celled. DISTRIB. Europe, W. Asia, 

 N. Africa. Fruit sold in country markets. 



4. P. A'ria, Sm. ; leaves simple or pinnatifid rarely pinnate at the base, 

 deeply lobed white and flocculent beneath. White Beam. 



Copses and borders of forests, from Sutherland to Kent and Devon, local ; 

 ascends to 1,500 ft. in Yorkshire ; fl. May-June. A bush or small tree, 

 4-40 ft. Leaves 2-6 in., very variable, glabrous above, plaited, coarsely 

 irregularly serrate lobed or pinnatifid. Flowers ^ in. diam., in lax corymbs, 

 white. Fruit \ in. diam., 'subglobose, dotted red, usually 3-celled. DISTRIB. 

 Europe, N. Africa, N. and W. Asia. 



P. A'RIA proper ; leaves broad ovate or oblong crenate-serrate lobulate or 

 hardly lobed beyond the middle, permanently snow-white beneath, nerves 

 8-13 very prominent on each side, fruit in. diam., scarlet. Mid. England 

 southd., Ireland. P. rupicola, Syme, has nerves fewer, fruit smaller. 



Sub-sp. P. IATIFOLIA, Syme ; leaves from ovate-oblong to suborbicular more 

 or less lobed grey-tomentose beneath, lobes deltoid serrate acuminate, 

 nerves 5-9 on each side less prominent beneath. Sorbus latifo'lia, Pers. P. 

 scan'dica,J$sib. Considered by foreign authors to be a hybrid between A'ria 

 and tormina' 'Us ; but it is found in Cornwall (Briggs) wlLiereA'ria is not known. 



Sub-sp. P. SCAN'DICA, Syme; leaves less coriaceous oblong deeply lobed or 

 pinnatifid glabrous above loosely grey-tomentose beneath, lobes oblong or 

 rounded. Soy^bus scaridica, Fries. Arran. 



P. hyb'rida, L. (P. pinnatiflda, Sm. in part, Sorbus ferinica, Fries), of Arran, 

 which resembles P. scan'dica, but with the leaves pinnatifid towards the base, 

 is a supposed hybrid between A'ria and Aucupa'ria, of which latter it has 

 the sweet-scented flower and other characters. 



5. P. Aucupa'ria, Gcertn. ; leaves pinnate, leaflets serrate glabrous 

 beneath when old or nearly so, fruit globose. Mountain Ash, Roivan- 

 tree. 



