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Page:TheTreesOfGreatBritainAndIreland vol04B.djvu/268

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884
The Trees of Great Britain and Ireland

Koehne suggests. It occurs in England in cultivation under the erroneous name of F. chinensis, the plants at Kew having been obtained from Sir C. W. Strickland, who tells us that it was sent out by the Royal Horticultural Society some years ago. Plants cultivated as F. Elonza are usually F. oxycarpa. (A.H.)

FRAXINUS WILLDENOWIANA

Fraxinus Willdenowiana, Koehne, Deutsche Dendrologie, 515 (1893).
Fraxinus parvifolia, Willdenow, Berlinische Baumzucht, 124, t. 6, f. 2 (1796) (non Lamarck); and Sp. Fl. iv. 1101 (1805).

A small tree. Shoots glabrous, lenticels white. Leaflets (Plate 265, Fig. 24), seven to eleven, 2 to 3½ inches long, subsessile (except the terminal one, which is much the largest and stalked), ovate, base broad and unequally cuneate, apex acuminate; serrations coarse and sharp with minute incurved points; both surfaces glabrous. The leaflets increase in size from the base to the apex of the leaf, the rachis of which is winged, the wings usually not meeting on the upper side, but forming an open groove. Fruit unknown.

This species was considered by Willdenow to be different from F. parvifolia, with which he had first identified it, yet he left it with this name. Koehne has accordingly given it a new name. It is sometimes met with in cultivation under the name of F. rotundifolia. It is readily distinguished by the large terminal leaflet and the open-grooved rachis from the other glabrous species. Its native home is uncertain. It is perfectly hardy at Kew and has very distinct foliage. (A.H.)

FRAXINUS DIMORPHA

Fraxinus dimorpha, Cosson et Durieu, Bull, Soc. Bot. France, ii. 367 (1855); Mathieu, Flore Forestière, 245 (1897).
Fraxinus xanthoxyloides, Wallich, var. dimorpha, Wenzig, in Engler, Bot. Jahrb. iv. 188 (1883).

A small tree attaining 40 feet in height. Young shoots purple, slender, glabrous, obscurely quadrangular. Leaves (Plate 262, Fig. 1) on barren branchlets with seven to nine small leaflets, which are ½ to ¾ inch long, sessile or subsessile, ovate or oval, crenulate-serrate, and glabrous except for pubescence on the midrib towards the base on the under surface; leaf-rachis usually glabrous, strongly winged, the wings spreading and forming a very open channel. The leaves on flowering shoots are larger, with seven to eleven leaflets, oblong-lanceolate, acute and serrate. Flowers (section Sciadanthus) perfect, without a corolla, but with a calyx which persists under the fruit, grouped in fascicled cymes on the previous year’s shoot


1. F. chinensis, Roxburgh, a native of China, is entirely distinct from ¥. Elonza, which is closely allied to /. oxycarpa, a Mediterranean species. Koch, in Dendrologie, ii. pt. I, 247 (1872), mentions F. Elonza as having been in cultivation some years, and considered it to be probably a variety of F. angustifolia.