240 NOTES ON THE FLORA OF ©0. ARMAGH. 
spicuously absent. (8) Limestone region: embraces the Carboni- 
ferous lime i 
rest of the county. (4) Silurian region: extends over the whole 
central and S.W. portions of the county; surface undulating and 
well tilled; flora generally uninteresting, but it was here that 
Carex rhynchophysa was obtained. Lepidium Smithii, unknown 
further north, is common on this area; Linaria vulgaris becomes 
generally wn ion: 
includes the granite and basalt hills of the §.E. Though an 
elevation of nearly 1900 ft. is reached, alpine plants are almost 
sent. mpared with the northe bog district, we find Ulex 
europeus replaced here by U. Gallii, and Myosotis palust M 
* the higher cultivated ground is full of Raphanus Rapha- 
nistrum, Lotus major, and Chrysanthemum segetum, which are some- 
what rare further north; Viola tricolor, Teucrium Scorodonia, Jasione 
montana, Lepidium Smithii, are also characteristic plants 
hores he e 
An interesting point in the flora of Armagh is the occurrence 
throughout the county of several species widely distributed through 
the centre and south of Ireland, but of extreme rarity in the north- 
east and north-west (districts 11 and 12); such are Hypericum 
dubium, Thrincia hirta, Festuea rigida. Two more, Ranunculus 
circinatus and Orchis pyramidalis, with a more limited distribution 
in Armagh, are algo characteristic plants of the centre and south of 
Ireland, and rare in, or absent from, the north, 
As regards the rarer plants of the county, I have already laid 
before the readers of this Journal (1892, p. 272; 1898, p. 88) some 
account of the two most interesting plants obtained, namely, Spi- 
ranthes Fomanzofiana and Carex rhynchophysa ; respecting which 
many British herbaria, unless discovered in other loca 
nother interesting addition to the flora of A is Calama- 
grostis Hookeri Syme, the Deyeuxia neglecta var. b don 
islands of Loug Neagh; in a future paper I hope to deal with the 
distribution of this and other Lough Neagh plants in detail; suffice 
