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CCXXV. E. Abergiana F.v.M.

In Fragm. xi, 41 (1878).

SHORTLY afterwards Mueller redescribed it in English in the “Eucalyptographia” with a Plate. The “Eucalyptographia” description so nearly follows the original that it may be stated here as equivalent to it.

Finally very tall; leaves scattered, of thick consistence, oval or elongated-lanceolar, hardly inequilateral, shining above, opaque beneath; the lateral veins copious subtle and very spreading, the longitudinal vein almost contiguous to the margin of the leaves, or but slightly removed from the edge; panicles terminal; flower-stalks thick, almost cylindrical, the ultimates bearing 2–6 flowers on exceedingly short or without stalklets; calyces pale, their tube truncate-ovate, nearly twice as long as the almost hemispheric lid, not angular; stamens all or nearly all fertile, inflexed before expansion; anthers oval, with nearly longitudinal dehiscence; stigma very slightly dilated; fruits large, oval-urnshaped, smooth, with a thin margin and with four enclosed at first horizontal valves; fertile seeds expanding from their summit into a long membrane, much longer than the slender sterile seeds.

On the mountains, near Rockingham Bay; Dallachy.

A lofty tree, with persistent bark and very expanding branches. Heart-wood very hard, reddish. Branchlets in some instances slender and somewhat angular, in other cases thick and cylindrical. Leaf-stalks ¾–1½ inches long. Leaves measuring 2½–4 inches in length or occasionally longer, rarely shortened to an almost oval form, 1–2 inches broad, often very gradually narrowed upwards, blunt at the base. Panicle almost corymbous; its ultimate flower-stalks generally about 1 inch long, as well as the branchlets, pale, not shining. The unopened calyces egg-shaped, their very blunt and rather thick lid rather separating by a horizontal rupture than by a well-defined suture of circumcision; the tube in flowering state about ½ an inch long; sometimes subsequently slightly turbinate. A few of the outer stamens occasionally devoid of anthers; filaments, according to the note of the collector, whitish in a fresh state, but reddish-yellow when dry; the longer filaments 4–5 lines long. Anthers hardly ½ a line long; their cells separated by a broad connective. Style half-included within the calyx, exceeded by the stamens. Fruit 1 inch long, or somewhat longer, not angular; the valves deltoid-sha ped, hardly ? inch long. Fertile seeds very compressed, terminated by a semi-oval membrane, giving a length of about ? inch for the whole seed, including the appendage.

In the “Eucalyptographia” it is stated to be “a lofty tree with persistent bark and very expanding branches,” and with reddish timber. I do not know of any tree belonging to this species which may be called “lofty” or “stately” (loc. cit.), but the species is very little known, and should be further investigated.




  ― 10 ―

Range.

The type came from the Coast Range near Rockingham Bay, Queensland, near 18 deg. south latitude, and we do not certainly know it from any other locality.

Queensland.

“Tree 15 or 20 feet high, rough bark.” Coast Range, Rockingham Bay (J. Dallachy). The type.

Affinities.

1. With E. ptychocarpa F.v.M.

“Approaches to E. ptychocarpa, with which it agrees in the size and shape of its fruit, but the latter is in no way lined with prominent longitudinal ridges, nor are the flowers provided with conspicuous stalklets.” (“Eucalyptographia,” under E. Abergiana.)

These ridges sharply separate the two species, which will be further compared when E. ptychocarpa is dealt with.

2. With E. miniata A. Cunn.

“This species differs from E. Abergiana in narrower leaves, opaque on both sides, axillary solitary flower stalks, longitudinally angular calyces, longer anthers, larger fruits and seeds without any appendage.” (“Eucalyptographia,” under E. Abergiana.)

For E. miniata, see Plate 96, Part XXII. The obvious differences are elongated ribbed fruits of E. miniata rarely urceolate as in E. Abergiana. The ribbing extends to the buds. The coarse inflorescence is sessile as to pedicels in both species.

3. With E. Watsoniana F.v.M.

E. Watsoniana again recedes in narrower leaves, equally coloured on other side, calyces with a varnish lustre and fixed to distinct stalklets, a widely dilated lid which over-reaches the orifice of the calyxtube, longer stamens, fruits wider at the summit with a furrowed broader rim and unappendiculated seeds.” (“Eucalyptographia,” under E. Abergiana.)

The differences of these two species will be dealt with in the next Part (under E. Watsoniana).

4. With E. corymbosa Sm.

E. corymbosa, which likewise occurs as far north as Rockingham Bay, is separated from E. Abergiana by its narrower leaves, acute at the base, angular and more slender flower-stalks, smaller calyces provided with stalklets and not pale-coloured, a thinner and not obtuse lid, which separates by a distinct suture of the calyx, smaller fruits, more contracted upwards, and the lesser appendage of the seeds.” (“Eucalyptographia,” under E. Abergiana.)




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And again “If it were necessary to point out any differences of E. corymbosa and E. Abergiana, we need only allude again to the colour of the stamens;—besides E. corymbosa has its flowers and fruits smaller, the seeds wholly or nearly destitute of any appendage, and the seedlings purplish-hispid, with short-stalked elliptic opposite leaves; while E. Abergiana is still further removed by the want of stalklets of its flowers and by the larger and wider lid, although the seeds are here again conspicuously appendiculated.” (“Eucalyptographia,” under E. ficifolia.)

For E. corymbosa see Plates 161 and 162 in Part XXXIX. In that species, pedicels are present and the peduncles more slender. The buds and fruits are smaller and less coarse; the fruits of E. Abergiana are less urceolate and the rims thicker. The foliage of E. Abergiana is coarser.

5. With E. terminalis F.v.M.

E. terminalis is distinguished in a similar manner from E. Abergiana as E. corymbosa, except the seeds, but besides in the paler foliage, the leaves being of equal colour on both sides, necessitating stomata on each, and not merely on the underside as in E. Abergiana; thus also the latter, like all the species with only hypogenous stomata, forms a more shady tree, its leaves expanding more horizontally, whereas E. terminalis, like the majority of its congeners, turns its leaves more vertically.” (“Eucalyptographia,” under E. Abergiana.)

Let us turn to Plate 164, Part XL, as regards figures of E. terminalis. E. terminalis (so far as we know) is the larger tree; E. Abergiana is stockier, and with thicker, coarser foliage. E. Abergiana has very short pedicels or none, while the fruits of E. terminalis are cylindroid rather than urceolate.

6. With E. calophylla R.Br.

E. Abergiana can be separated from E. calophylla and E. terminalis by the want of stalklets of its calyces, and from the latter besides by the broader and above dark-green leaves.” (“Eucalyptographia,” under E. corymbosa).

This will be referred to when E. calophylla is reached.

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