BEIOAGE*. 



527 



Corolla shorter than the calyx. Leaves very short, all 



opposite 1. Common II. 



Corolla longer than the calyx. Leaves in threes or in 

 fours. 

 Anthers included within the corolla. 



Corolla nearly \ inch long, oblique at the mouth. 



Anthers without awns 4. Ciliated II. 



Corolla about i inch long, straight at the mouth. 

 Anthers with two awns, or little appendages 

 at the insertion of the filament. 

 Leaves 3 in a whorl. Mowers numerous, in ob- 

 long or elongated racemes 2. Scotch H. 



Leaves 4 in a whorl. Flowers few, in terminal 



clusters or umbels 3. Cross-leaved R. 



Anthers protruding from the corolla, without awns 



Corolla campanulate or nearly globular. Sepals 



short. Anthers short, with slender filaments 6. Cornish H. 



Corolla narrow ovoid. Sepals linear. Anthers ob- 

 long, with flattened filaments 5. Mediterranean II. 



1. Common Heath. Erica vulgaris, Linn. (Fig. 629.) 

 (Eng. Bot. t. 1013. Calluna vulgaris, Brit. Fl. Heath or Ling.) 



A low, straggling shrub, seldom above 

 a foot high. Leaves very small and 

 short, opposite, a little prolonged at the 

 base below their insertion, and on the 

 young shoots closely imbricated in four 

 rows. Flowers small, of a purplish- 

 pink, often very pale or even white, on 

 short pedicels along the upper branches, 

 forming irregular, leafy racemes. Calyx 

 coloured like the corolla, with 4 small 

 bracts at its base, often called an outer 

 calyx. Corolla concealed by the calyx, 

 deeply 4-lobed. Capsule opening by 

 slits opposite the partitions, not in the 

 middle of the cells, as in most other 

 Heaths. 



The most widely distributed of all the 

 Heaths, extending over the whole of 

 central and northern Europe to the 

 Arctic Circle, eastward to the Ural, and westward to the Atlantic, from 

 Labrador down to the Azores. In Britain very abundant. Fl. summer. 



Fig. 629. 



