392 33. GROSSULARIACE^. 



402. Epimedium alpinum, Linn. 



Area (1 ******** 10 * 12 13 14 15 16). 



Alien. Has been occasionally planted in woods for the 

 purpose of imposing upon botanists, or introduced about 

 houses and grounds for the sate of ornament. I ara un- 

 aware of any sufficient I'easons or facts for giving it place 

 among British plants, otherwise than as an alien, not to 

 be held fairly naturalized. 



403. Rises nigrum, Linn. Ac Z^^- ^O.^. ^32-^ 



Area 12 3 4 b^i^ ^ (8)<^|^10 11 12 13 (14 15) 16. 



South limit in Devon, Isle of Wight, Kent. 



North limit in Isla and Northumberland. 



Estimate of provinces 10. Estimate of counties 30. 



Latitude 50 — 56. English type of distribution. 



Agrarian region. Inferagrarian — Midagrarian zones. 



Descends nearly to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 50 — 47. 



Denizen. Sylvestral. Admitted as a native of Britain, 

 by Henslow, Hooker, Babington and others. Dr. Brom- 

 field deems it truly native in the Isle of Wight ; and, in 

 comparison with R. rubrum, writes of this species, — 

 " Though less frequent, is not less certainly wild ; but is 

 only to be seen in very cool shady situations, mostly in 

 our thickets of deep rotten bog, filled with a rank unwhole- 

 some vegetation of (Enanthe crocata." I have seen several 

 of the known habitats ; but none of them have appeared to 

 me such as I could believe to be truly native localities. 

 Cultivated up 300 or 400 yards in the Highlands. 



