ON THE ENGLISH MINTS. 253 
M, Marrubiuslnmy P. Schultz, recedes still further from var. 1 in the 
same direction. 
' Var. 5. M. Allioui, Boreau, 1961. M. Amiriaca, Allioni, non 
Jacquii), fide Boreau. 
Stem 2-3 feet high, loosely branched, often rather reddish, naked or 
nearly so below and shortly haiiy above. Leaves thin and flexible in 
texture, deep green and thinly hairy all over above, hairy principally 
on the veins beneath. Pedicel naked or slightly hairy. Calyx -tube 
green, quite campamilate, hairy all over, especially at the base, but not 
densely so, the teeth short but acutely triangular, the corolla more 
showy and less hairy than in var. 1. This is a not unfrequent stream- 
side plant, very liable to be confused with M. (jentilis, from which it 
may be most readily known by its hairy corolla and dotted seeds. 
The tnie Austriaca, as I have it from M. Deseglise, is quite a different 
plant. 
Var. 6. M, pai'ietaricefolfa, Becker; Wirtgen, n. 87; Boreau, 
1963. M. arvensis parietariqfoUa^ Eeichb, Icones, 12S9, fig. 2. 
Stem loosely ascending, 2-3 feet high, not much branched, the 
lower part naked, the upper slightly haiiy with short deflcxed hairs. 
Petiole naked, the blade broadly ovate, narrowed very gradually from 
above tlie middle or slightly rounded into a decurrent haft, the point 
bluntish or sharp, the texture thin, the venation pellucid, hardly at all 
hairy on either side, the edge slightly ciliated with short hairs, the ser- 
ration blunt and shallow, and the lower half of the leaf almost or quite 
entire. Whorls extending below the middle of the stem, the lowest 
l|-2 inches apart, the upper with leaves several times their length, 
and the top whorl or two flowerless. Pedicel 1 line long, nakeil or 
very slightly hairy. Calyx-tube f line long, campanulate, the hairs 
thin and short, the teeth \ line long, bluntly or sharply triangular, only 
slightly hairy. Coj-olla deep-coloured, twice as long as the calyx, 
slightly hairy. This is a handsome and conspicuous stream-side form, 
bearing much resemblance in habit and appearance to M. riihra^ but 
with the arvemh type of calyx. It was found in Yorkshire many 
years ago by Mr. John Hardy, of ilanchester, oti the banks of the 
Don, near Conisborough, and I have seen it also in Winch's Herbarium, 
labelled as M.prcccox, from the banks of the Mole, uearBrockham. In 
Scandinavia, -3/. arvensis is the most boreal species of the genus, being 
the onlv one that reaches Lapland, 
