126 ROSACES. [PYBUS. 



Copses and hedges, from the Forth and Clyde southwards ; an escape in 

 Scotland ; wild in Ireland ; fl. May. A shrub or small tree ; branches 

 spreading. Leaves 1-2 in. , oblong, rounded acuminate or cuspidate at t he- 

 tip, glabrous, or downy below when young. Flowers few, 1-1^ in. diam., 

 pink and white. Calyx-segments woolly. Fruit 1 in. diam., yellow. DISTRIB. 

 Europe. 



YAH. 1, ace/ba, DC. (sp.) ; young leaves and tube of calyx glabrous, pedicels 

 slender glabrous or nearly so, fruit drooping. VAR. 2, mi'tis ; young leaves 

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



SECTION 2. Sor'bus, L. (geu.). Fruit small, 2-8-celled; cells 1 -seeded; 

 endocarp brittle. Flowers iii compound corymbose cymes. 



3. P. tormina'lis, Ehr. ; leaves 6-10-lobed sen-ate glabrous wlu-n 

 mature on both surfaces. Wild Service. 



Woods and hedges, rare and local from Anglesea and Nottingham southwards ; 

 n. April-May. A small tree, branchlets and young leaves below pubescent. 

 Leaves 2-4 in., oblong-ovate or cordate ; lobes triangular, serrate, acuminate. 

 Flutters \ iu. diam., many, white. Carpels usually 2. Fruit ^ in., pyriforrn 

 or subglobose, greenish-brown, dotted, 2-celled. DISTRIB. Europe, N. 

 Africa. Fruit sold in country markets. The true Service (1 J . iSorbus, 

 Gaertu. ) is a very different plant, more like the Mountain Ash, and is not 

 u native. 



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

 deeply lobed white and Hocculent beneath. 



Copses and borders of forests, local ; ascending to 1,500 ft. in Yorkshire ; 



W. and N. of Ireland ; fl. May-June. A bush or small tree, 4-40 ft. 



Leaves 2-6 in., very variable, glabrous above, plaited, coarsely irregularly 



serrate. Flowers | in. diam., in lax corymbs, white. Frtut ^ in. diam., 



subglobose, dotted red. DISTRIB. Europe, N. Africa, Siberia, W. Asia to 



the Himalaya. The following sub-species all run into one another ; the leaf 



characters are taken from 'flowering branches. 

 Sub-sp. A'RIA proper ; leaves ovate or oblong lobulate or hardly lobed beyond 



the middle snow-white below, nerves 8-13 on each side. Mid. England 



southwards. 

 Sub-sp. uui'ic'oLA, Sipiie ; leaves obovate-oblong lobed above, snow-white 



below, nerves 5-8 on each side. Local in England, Scotland, and Ireland. 

 Sub-.sp. IXTKRMK'UIA, E/<r. (sp.); leaves oblong rather distantly lobed along 



the sides ashy-white below, nerves 5-8 on each side. 1'. samdica, Bab. S. 



of England ; local. 

 Sub-sp. FEN'NICA, L. (var.) ; leaves oblong pinnatifid snow-white beneath, 



fruit scarlet. P. pinnatfjida, Sm. Arran Is. in the Clyde. 



5. P. Aucupa'ria, Gccrtn. ; leaves pinnate, leaflets glabrous below 

 when old or nearly so. Mountain Ash, Rowan-tree. 

 Woods and hillsides, chiefly in mountainous districts ; ascending to 2,000 ft. 



in the Highlands; fl. May-June. Tree 10-30 ft. Leaves 5-8 in. > leaflets 



6-8 pan-, 1-1^ in., linear-oblong, subacute, serrate, pale below and hairy 



along the midrib and nerves. Cymes 4-6 in. diam., compound, corymi'o-r. 



dense-flowered. Flowers J in. diam., cream-white ; pedicels and calyx villous. 



lorries % in. diam., globose, scarlet, flesh yellow, 2-4-celled; endocarp almost 



woody. DISTRIB. Europe, Siberia, Dahuria, Madeira. 



