possible to separate it specifically by the slight and probably 

 variable differences above noted. 



E. macradenium is a native of the Pyrenees, where it was 

 discovered by Lapeyrouse in 1782, who describes it as being 

 remarkable for the extraordinary length and peculiar form 

 of the roots, and strong, acrid, penetrating odour of the fo- 

 liage. The specimens figured were received from Messrs. 

 Backhouse, to whom we are also indebted for living plants 

 now flowering in the Royal Gardens. 



Descr. Boot very large, stout, long, tortuous amongst 

 rocks, crowned with the ragged bases of the old leaves. Stem 

 scarcely any. Leaves crowded near the top of the root, 

 spreading, on long petioles, hairy and glandular, one and a 

 half to two inches long, oblong in outline, pinnate, the seg- 

 ments linear-oblong, pinnatifid ; rachis with a toothed wing. 

 Peduncles longer than the leaves, ascending. Flowers um- 

 bellate, three-quarters of an inch in diameter. Involueral 

 leaves ovate or lanceolate, acuminate. Sepals oblong-linear, 

 with a long, subterminal mucro. Petals longer than the 

 sepals, obovate ; two upper purple, with a deep black-purple 

 horse-shoe spot, and purple veins ; three lower pale purple. — 

 J. I). H. 



Fig. 1. Calyx and pistil: — magnified. 



