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Eupatorium ligustrinum DC.

Modern name

Ageratina ligustrina (DC.) R.M.King & H.Rob.

Synonyms

E. micranthum Lessing; E. weinmannianum Reg. & Koern.; Ageratina ligustrina (DC.) R. M. King & H. Robinson

An evergreen bush of dense growth and hemispherical shape, as much as 9 ft high and wide, the whole of the plant free from down except the flower-stalk and the scales of the involucre. Young shoots slender, slightly angular, often purplish on the sunny side. Leaves opposite, elliptical to elliptical-lanceolate, sometimes inclined to obovate, mostly pointed, tapered at the base, shallowly or indistinctly toothed on the terminal half, 2 to 4 in. long, 34 to 112 in. wide, pale bright green; stalk 14 to 58 in. long. Inflorescence a branching, flattish, rounded cluster of corymbs up to 8 in. wide. Flower-heads 14 in. wide, each composed of six to ten florets surrounded at the base by an involucre of linear, downy scales. Florets tubular, 14 in. long, creamy-white, sometimes slightly rose-tinted, charmingly fragrant, the bi-lobed stigmas much exposed.

Native of E. Mexico from Tamaulipas to Chiapas; and of Guatemala and Costa Rica. In gardens, where it is better known under one or other of the synonyms given above, it is most commonly grown as a pot plant, with greenhouse protection except during the summer. It is, however, hardy enough to be grown outdoors in the mildest parts; a plant at Logan in Wigtownshire has attained a height of 8 ft and a spread of 12 ft. A 6 ft plant at Belhaven House, E. Lothian, flowers throughout the winter and stood 120 of frost.


Genus

Eupatorium

Other species in the genus

[No species article available]