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LEONURUS Sibiriens.
Siberian Mother-wort.
Natural Order. L a b i a t a ; . Brown prodr. 499.
Sect, I I . Stamina4 fertilia, antlieris omnium v. duorum completis.
A. Calyx reqularis b-fidus v.ò-10-dentatus. . • .
L E O N UR US. Calyx 5-dentatus. Corolla: labium supenus inte-
irrum ; inferius tripartitum ; lacinia media indivisa. Anthera lobis
parallelis. Brown in Hort. Kew. ed. 2. v.'ò.p. 405.
L . sibiricu.1, foliis tr ip a r t i t i s ; lao in iis subinoisis o b tu s iu scu lis , c aly -
c ib u s in e rm ib u s , g a le a corollce fo rn ic a ta ereo ta . Spreng, syst. veg. 2.
L e u n u r« ; Sibiriens. Willden. sp. pl. 9 p. 117. Smith exoU bot. 2. p. 67.
t. !)4. Pers. syn. 2 . p. 126. Hort. Kew. ed. 2. v. 3. p. 4 0 6 .
Biennial. Stems erect, from one to 2 feet high, 4-sided,
and channelled down each side, of a purple colour, and
clothed with a short thin pubescence. Xeaues 3-parted,
nearly to the base: segments more or less divided, and
bluntish: those on the lower leaves subpinnatifid or pal-
mately spreading: on the upper ones entire, all linear,
channelled and bluntish, of a glossy green on the upper
side and lighter underneath, slightly pubescent, and the
margins slightly fringed with very short hairs. Petioles
channelled on the upper side, and convex on the lower
pubescent and ciliate. Flowers m whorls, or m very close
fascicles in the axils of the leaves : /«mcZes many-fiowered,
surrounded by numerous pungent hairy bractes. Calyx
5-angular and 5-toothed, thickly clothed with spreading
white hairs; the teeth sharp but not Pungent, and
spreading, the two lower ones longest. CoroMa ^2-hpped .
uppdr lip straight, and arched or concave, densely tomen-
tose on h e outside: lower one 3-parted; side lobes short
and straight: middle one more than double the size, the
point reflexed. Stamens 4, inserted m the tube 2 onger
than the others ; filaments smooth. Style smooth, longer