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  ― 126 ―

CCLI. E. Jacksoni Maiden.

In Journ. Roy. Soc. N.S.W., xlvii, 219 (1913).

FOLLOWING is the original description:—

Arbor magnifica sylvæ, altitudinem 200' attinens, et 15' diametro. “Red Tingle Tingle” vocata. Cortex “Stringybark” similis sed fragiliuscula. Lignum rubrum, durum. Folia juvenilia fere orbicularia vel lato-lanceolata. Folia matura petiolata, lato-lanceolata, acuminata, pleraque 9 cm. longa, 3–4 cm. lata. Venæ visibiles, non conspicuæ. Alabastros floresque non vidi. Fructus fere sphærici, plerique 8 mm. ad 1 cm. diametro. Orificium parvum, 3 mm. diametro. Valvarum apices sub orificio valde depressi.

A noble forest tree up to 200 feet high, erect in habit, with a long trunk, which attains a diameter of 15 feet (measured at 4 feet from the ground). Another measured tree was 7 feet 6 inches in diameter and 80 feet high (Mr. Saw). It reached a height of quite 200 feet; one tree measured was 45 feet round the base, 38 feet round 6 feet from the ground, and about 50 feet to the first branch (Mr. Brockman). Known locally as “Red Tingle Tingle.”

Bark fibrous, reddish, thick, of a stringybark character, but somewhat brittle, covering the trunk and branches.

Timber bright red, reminding one, in that respect, of the Forest Mahogany of New South Wales (E. resinifera Sm.). It is fissile and tough, and I believe it to be a most valuable timber for economic purposes.

Juvenile leaves.—Nearly orbicular to broadly lanceolate, somewhat oblique, paler on the under side, not specially thin, venation distinct but fine, lateral veins nearly parallel, intramarginal vein well removed from the edge. Oil-dots abundant. Average dimensions about 1 dm. long by 6 to 8 cm. wide.

Mature leaves.—Equally green on both sides, petiolate, broadly lanceolate, acuminate, slightly curved, slightly inequilateral, veins obvious, but not very conspicuous, lateral veins parallel, intramarginal vein well removed from the edge, well besprinkled with fine oil-dots, and apparently moderately rich in oil. Average size of leaves 9 by 3 to 4 cm.

Buds and flowers not seen.

Fruits.—Almost spherical, with an average diameter of 8 mm. to 1 cm., with a small orifice, of say, 3 mm. in diameter. Tips of valves well sunk below the orifice.

[Since the above was written I have received half-grown buds, as figured, fig. 7, Plate 183. They may be described as clavate, four or five in the head (as seen in very few specimens) with rather long peduncles and with distinct pedicels, tapering gradually into the calyx-tube. Operculum hemi-ellipsoid, about half the length of the calyx-tube.]




  ― 127 ―

Range.

So far as we know, this species is confined to South-western Australia.

Deep River, Nornalup Inlet, Bow River, Irwin's Inlet, South-west Australia. (The type collected by Sidney Wm. Jackson.) Found also on the hills along the Frankland River, where it predominates and extends about 10 miles up. (Inspecting Ranger H. S. Brockman, to the Inspector-General of Forests, W.A.)

As opportunities occur, no doubt the range of this species, and also the Yellow Tingle Tingle (E. Guilfoylei) will be carefully defined, as they yield valuable timbers.

Affinities.

1. With E. Guilfoylei Maiden.

Although there are precedents, I hesitate to describe a species in absence of inflorescence, and without this, the description must be incomplete. But I have no doubt as to the validity of the species. It is closely allied to the Yellow Tingle Tingle (E. Guilfoylei Maiden, Journ W.A. Nat. Hist. Soc., iii, 180; see also Part XX of the present work), the wood of which is pale, of a yellow colour and heavy, that of the present species being red, and lighter in weight.

The Red Tingle Tingle is a much larger and thicker tree than the Yellow Tingle Tingle, the latter having been observed only up to 5 feet in diameter.

As regards the adult leaves, those of E. Guilfoylei are always symmetrical, or nearly so; those of E. Jacksoni are more or less oblique, shorter, and broader.

The oil-dots in E. Guilfoylei are a greater distance apart than in the case of the new species, over the leaves of which they are evenly and abundantly diffused, while the secondary veins are further apart and ramify more in the case of the leaves of E. Guilfoylei. (Original description.)

2. With E. patens Benth.

Mr. H. S. Brockman says that “in general appearance the trees resemble very much the Blackbutt” (E. patens). Reference may be made to the original description of E. Guilfoylei, where there are some comparative references to E. patens.

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