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species ; and the warm limestone débris-on which they grow accele- 
rates their blooming. 
The rocks and gravelly pastures were then quite yellow with the 
pretty flowers of Helianthemum canum; and the lovely Gentiana 
verna must have beeu gay about the end of April, when in full bloom: 
a few of the brilliant blue flowers were still to be seen, but most of 
them were in seed. Astragalus hypoglottis and the pretty rock-plant 
occurred in considerable quantities in several places, accompanied by 
its fair rival, Arenaria verna, which was in profuse bloom. Arabis 
ciliata was also in full bloom, and Asperula cynanchica showing 
blossom. 
Allium Babingtoni, which grows abundantly in many parts of the 
island, had already reached a height of more than three feet, though 
not nearly full grown ; and the gem of Arran plants, namely, Adian- 
tum Capillus-Veneris, had ventured to protrude its delicate young 
fronds out of the warm limestone fissures, where it grows so abun- 
dantly. 
The foregoing shows that a fair share of our prettiest indigenous 
plants are congregated together on Arran, which affords the only 
Trish habitat for two of them, véz., Helianthemum canum and Astra- 
galus hypoglottis. To these we were fortunate enough to add a third, 
namely, Ajuga pyramidalis. Only two plants of it were observed; 
but no doubt there are more on the island; and I further consider 
it reasonable to suppose that it will yet be found on the opposite main- 
land of Connemara, where Eriocaulon septangulare, Arabis ciliata, 
Palmella montana, and other plants occur which grow in the North- 
west of Scotland, in nearly the same geographical range with Ajuga 
pyramidalis. | 
We visited the small island called Stran Island, where, in 1805, 
Dr. Mackay found Matthiola sinuata, which is not now growing there. 
It is, therefore, probable that plant is lost to the Irish Flora. 
From the position of Arran we expected to find some scarce Cryp- 
togamic plants, but were disappointed. There are very few species 
of lichens, mosses, or Jungermanniz, and none that we observed rare. 
It was rather curious to see some of the species, which seldom grow 
except on trees, adapting themselves to circumstances, and covering 
the faces of rocks, in the total absence of arboreal vegetation. This 
was especially the case with Hypnum trichomanoides, H. complana- 
tum, and Jungermannia complanata. 
Our time (only two days) did not admit of a close examination of 
the marine Algz, which grow in great abundance, and form the prin- 
