Mentha.] LABIATA. 227 
M. sativa Linn.—W. hirsuta x arvensis. 
Districts I. IT. Til IV. V. VI. VII. VIII IX: 
Native. Damp meadows, river banks, ditches and other 
wet places. Common. Peren. July—September. 
First record in 1804: Wade Rar—as M. arvensis var. 
d. Fl. Brit. = M. gentilis Smith. 
M. Malinvaud in Comp. Rend. Congrés des Soc. savantes 
1898—Sciences, and M. Lloyd in Flore de l'Ouest, dth Ed. 
p. 265, have shown that I. sativa may almost certainly be 
regarded as a natural hybrid between M. hirsuta and 
arvensis ; this would fully account for the great variability 
shown by the plant in Kerry as elsewhere. Numerous forms 
appear to occur in the county, amongst those gathered being 
var. PALUDOSA (Sole) and var. SUBGLABRA (Baker) near the 
Killarney Lakes, &c. M. Malinvaud also draws attention 
(loc. cit.) to the aggressive vigour of the hybrid Mints shown 
in the free production of layers and suckers, by means of 
which they spread rapidly This is well illustrated in Kerry 
by the wide distribution of M. sativa, whereas IM. arvensis, 
one of its reputed parents, is quite a local plant over a great 
portion of the county. 
M. arvensis Linn. Corn Mint. 
Districts I — — IV. V. VI. VIL. VIII. IX. 
Colonist or native. Roadsides, fields and waste places. 
Local in the south, rather common elsewhere. Peren. 
July—September. 
Rare in the following Districts—I. In several places about 
Kenmare, 1908, and on roadsides near Cleady east of Ken- 
mare, 1904.—IV. A weed about Churchtown, 1909: R.W.S. 
About Beaufort, 1911 : Mrs. Jenner. 
From sea-level to 550 feet on roadside north of Rathmore 
(R.W.S.). 
First record in 1901: R.W.S., Topog. Bot. 
Probably more frequent in the south of the county than 
the above records would show. 
M. Pulegium Linn. Penny-royal. 
Districts I. IIT. OWI. IV. V. VI. VII. VII. Ix 
Native. Roadsides, damp waste places, lake- and pond- 
margins and other marshy spots. Rare in the extreme 
south and north, rather common and locally abundant 
elsewhere. Peren. August—September. 
I. By the roadside near Lehid wood north of Derreen, 
1894, and on the shore of the Middle Cloonee Lake, 1908.— 
