FLOWERING PLANTS. 9 
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SPECIES V—THALICTRUM FLAVUM. Zinn. : 
Pirate 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. a. Spherocarpum. 
T. flavum, eich. Ic. Fl. Germ. et Helv. Vol. III. Ran. Tab. XLIV. Fig. 4639. 
Boreau, F\. 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, F\. du Cent. de Fr. ed. ii. Vol. IT. 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 a, from Cambridgeshire, Derbyshire, and Herefordshire ; of 
6, from’ Surrey, Essex, and York; and “TT. 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, 
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