ARBORETUM NOTES 9 
EEGUMINOSA:. 
said (in Henfrey’s Vegetation of Europe), that these ae 
two species exactly represent or replace each other 
on opposite sides of the Eastern Alps; alpinus 
abounding on the northern face of the mountains, 
Laburnum on the southern. But this fact, 
supposing it correct, would admit of two different 
interpretations, according to the different views of 
naturalists concerning species. 
) 
Whe -alpine or “Scotch” Laburnum, though 
most certainly not a native of Scotland, is much 
cultivated in that country, much more, I think, 
than in these parts of England. 
Ropinia Viscosa.—Loudon, v. 2, 626. 
Two good specimens, planted about 1825, in Roba 
two different clumps on the lawn; the one most 
to the east the larger. They both flower every 
year, usually in July (always later than the 
common Robinia), more or less abundantly, but 
seldom profusely ; and now and then, in favourable 
seasons they have borne pods. These are rather 
peculiar in appearance, being thickly beset with 
dark, red stalked glands. 
Robinia Viscosa has flowered this year (1879), 
much more profusely than I ever saw it 
before, so as to be very ornamental; and its 
season of blossoming (like that of almost all 
