122 
THALICTRUM 
Camb. Brit. FI. iii. Plate 121. (a) Flowering branches, (b) Portion of peduncle (enlarged), (c) Stamens 
(enlarged). ( d ) Heads of achenes (one enlarged), (e) Achene (enlarged). Perthshire (E. S. M.). 
Exsiccata : — Billot, 2402, as T. majus. 
Rhizome short, stout. Shoot 2 — 5 dm. high. Laminae large, 3-pinnate ; lobes of the leaflets 
usually truncate or subcordate at the base, terminal ones usually 3-lobed and acute. Inflorescence 
large, diffuse, leafy, branches ascending. Pedicels up to about 3 cm. long. Flowers more or less porrect. 
Achenes about twice as long as broad, about 5 or 6 mm. long. 
Gravelly and rocky sides of streams in the north of England and Scotland. 
Europe. 
(b) T. majus var. capillare N. E. Brown in Eng. Bot. ed. 3, suppl., 4 (1892); T. capillare Reichenbach 
FI. Germ. Excurs. 729 (1832); Icon, iii, 15 (1838-9); T. flexuosum Babington loc. cit., partim non Bernhardi nec 
Reichenbach. 
leones : — Reichenbach Icon. t. 36, fig. 4634, as T. capillare. 
Camb. Brit. FI. iii. Plate 122. (a) Leaf, (b) Inflorescence, (c) Portion of petiole. ( d ) Head of achenes. 
( e ) Achenes (enlarged). Perthshire (W. R. L.). 
Shoot as in var. dumosum. Laminae 3- to 4-pinnate ; ultimate leaflets subcordate at the base, 
terminal one 3-lobed, each lobe 2-fid or 3-fid, obtuse, often apiculate ; rather larger and thinner than 
in var. dumosum. Inflorescence as in var. dumosum. Peduncles long (up to 6 or 7 cm.) and capillary. 
Pedicels and flowers as in var. dumosum. Achenes about times as long as broad, about 3 — 5 cm. 
long. 
Banks of lakes and streams ; Perthshire, and perhaps elsewhere. 
Central Europe. 
Gravelly and rocky banks of streams and lakes; Wales, northern England, Scotland. 
Germany, France, central Europe, southern Russia, south-eastern Europe. 
4. THALICTRUM ELATUM. Tall Meadow-rue. Plate 123 
Thalictrum elatum Jacquin Hort. Vindob. iii, 49, t. 95 (1776)!; Wallroth Sched. Crit. 260 (1822)?; 
Koch Syn. 5 (1835)?; nec Nyman Consp. 5 (1878); nec Reichenbach Icon, iii ( Ranunc. ), t. 35, fig. 4633. 
leones : — Jacquin Hort. Vindob. iii, t. 95. 
Camb. Brit. FI. iii. Plate 123. (a) Leaf, (b) Inflorescence, (c) Stamens (enlarged), (d) Heads of achenes 
(two enlarged). ( e ) Achene (enlarged). Perthshire (E. S. M.). 
Perennial. Shoot up to 8 — 14 dm. high. Petioles about as long as the lower leaflets. Laminae 
tri- or bipinnate ; pinnae with long (ca. 2 cm.) stalks ; pinnules large (up to about 3 cm. broad and 
2 long), more or less remote, often cordate .at the base and asymmetrical, margin coarsely and 
irregularly 3- to 7-crenate, usually very obtuse, usually dark green above, subglaucous underneath. 
Inflorescence variable in size, branches rather remote, diffuse, rather divaricate. Pedicels up to about 
2.5 cm. long. Flowers more or less porrect. Anthers slightly apiculate. Achenes relatively small, 
elliptical. 
We find ourselves unable to escape from the conclusion that the plant of our Plate 123 is the T. elatum of Jacquin, as 
judged by his description, his illustration, and his specimen (in Herb. Mus. Brit .), though we doubt its being the T. elatum 
of recent continental authorities (vide Rep. Watson Bot. Exch. Club ii, 426 (1915)). We have long been familiar with it as 
a native of the shores of the lakes in the Lake District and in Scotland. It seems to us to be the most distinct of the 
plants we include in the series Minores ; but we do not know whether or not it has been proved to remain constant in 
cultivation. N. E. Brown (loc. cit.) indicated that T. elatum Jacquin was probably a British plant. 
Local; gravelly margins of lakes and brooks in the north of England and in Scotland ; ? Wales, North 
Riding of Yorkshire, Durham, the Lake District (e.g., Cumberland), Perthshire, and perhaps elsewhere. 
[We have seen no foreign material except Jacquin’s original specimens which are of garden origin.] 
Series iii. Fla va 
Flava nobis. For characters, see page 119. Only British species: — T. flavum. 
