FLOWERING PLANTS. 9 
SPECIES V—THALICTRUM FLAVUM. Zinn. 
Puatre VIII. 
Stem erect, furrowed. Panicle narrowly pyramidal, or sub- 
corymbose, its branches terminating in very compact, umbellate, or 
corymbose tufts of erect flowers. Achenes ovoid, regular, very 
dark olive when ripe. Anthers not apiculate. Leaves ternately 
bi-pinnate. Leaflets longer than broad, 3-lobed. 
Var. «. Spherocarpum. 
T. flavum, Zeich. Ic. Fl. Germ. et Helv. Vol. III. Ran. Tab. XLIV. Fig. 4639, 
Boreau, Fl. du Cent. de Fr. ed. ii. Vol. II. p. 5. 
Panicle generally contracted, Achenes globular-ovoid. 
Var. 6. Riparium. 
T. riparium, Jord. Boreau, Fl. du Cent. de Fr. ii. 5. 
Panicle generally rather lax. Achenes oval-ovoid. 
Var. y. Dorisoni. 
T. Morisoni, Reich. Ic. Fl. Germ. et Helv. III. Ran, Tab. XLV. Fig. 4640. 
Boreau, Fl. du Cent. de Fr. ed. ii, Vol. II. p. 4. 
Panicle generally interrupted, the fascicles of flowers small. 
Achenes oblong-ovoid. 
Figures of the fruits of these three varieties are given in Plate VIII. 
In wet meadows, and by the banks of rivers and ditches, not 
uncommon in England; but scarce in Scotland, where Argyleshire 
and Fifeshire appear to be the northern limits. I have seen speci- 
mens of «, from Cambridgeshire, Derbyshire, and Herefordshire ; of 
P, from Surrey, Essex, and York; and “'T. flavum, E. B. 367,” is 
quoted by Reichenbach, under his figure of T. Morisoni. 
England, Scotland, Ireland. Perennial. Summer. 
Less glaucous than the three preceding species, and with a more 
extensively creeping and stoloniferous rootstock. The stem, which 
is from 2 to 4 feet high, is thicker and more deeply furrowed. 
Leaflets less numerous, and usually much larger and narrower in 
proportion to their length; but they are very variable in shape, 
C 
