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CCXL. E. Mooreana (W. V. Fitzgerald) Maiden.

In Journ. Roy. Soc. N.S.W., xlvii, 221 (1913).

FOLLOWING is the original description:—

Arbor parva, contorta, glauca. Ramuli teretes. Folia juvenilia ovato-cordata vel lato-lanceolata, amplexicaula vel perfoliata, crassa, pleraque 10 cm. longa, 8 cm. lata. Venae patentiores, venis secundariis fere parallelibus, vena peripherica a margine remota. Folia matura ampliora et acuminatiora. Opercula conica et longitudine et diametro 1 cm.metientia. Fructus hemisphaerico-cylindroidei, valvarum apicibus conspicue exsertis.

In honour of Newton J. Moore, Minister for Lands, subsequently Premier, and then Agent-General in London for the State of Western Australia.

A small crooked tree, glaucous all over, branchlets round. Notes on bark and timber not available. (A White Gum with reddish timber; see below.)

Juvenile leaves.—Ovate-cordate or bluntly and broadly lanceolate, stem-clasping or perfoliate. Thick, somewhat undulate, uniform colour on both sides, venation somewhat spreading, the secondary veins roughly parallel. Intramarginal vein distant from the edge. Average size say 10 × 8 cm.

Mature leaves.—These do not differ essentially from the juvenile leaves, except that they are larger and more acuminate. Average size, say 15 × 9 cm.

Buds.—Four to seven on a sessile or nearly sessile head with a thick common peduncle of about 1 cm. Symmetrical, the operculum bluntly conical, about 1 cm. long and of equal diameter, the calyx-tube of equal length and with one or two angles.

Flowers.—Pale yellow when fresh, drying orange red. Anthers long and creamy in colour, opening in parallel slits, large gland at the back, filament attached to the middle, versatile.

Fruits.—Hemispherical-cylindroid, with a thin, sharp, slightly domed rim, the tips of the valves very prominently protruded. Diameter at rim scarcely 1 cm.

When Mr. Fitzgerald went to the war in April, 1916, he entrusted many of his botanical manuscripts to me, and amongst them I found the following description of E. Mooreana, which I reproduce here, as it usefully supplements the description I had drawn up nearly three years previously. A few notes from it I published in Journ. Roy. Soc. N.S.W., li, 454 (1917).

Arborescent; branchlets, foliage and inflorescence mealy-white, seldom green, the branchlets terete or slightly angular; leaves sessile, opposite, broadly ovate, obtuse or scarcely acute, cordate or almost amplexicaul, rather rigid, veins divergent, the intramarginal one distant from the edge; flowers sessile, mostly 6–8 together, on axillary opposite peduncles which are thick, angular and dilated upwards; calyx-tube obovoid, obtusely angled, lid conical, as long as or slightly longer than the tube, tapering into a short obtuse beak, enveloped until shortly before expansion of the stamens in an outer membranous covering of the same shape; stamens all antheriferous, the outer somewhat short and flexuose, the inner


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inflected in the bud; anthers broadly oblong or almost ovate, with distinctly parallel cells dehiscing longitudinally; ovary conical; style stout, shorter than the stamens; fruit broadly obovate, obscurely angled, not constricted at the summit, the rim rather thick and flat; capsule scarcely sunk; valves four, deltoid and much protruding; seeds angular, the sterile ones small and narrow.

Height, 30 feet, the trunk and limbs crooked, the former 10 feet; diameter 1½ feet. Bark smooth, white and persistent. Timber reddish, tough and moderately hard. Leaves 4–6 inches long, 2½–3 inches broad. Peduncles usually ½ inch long; calyx-tube 4 lines long. Stamens about 3 lines, the filaments pale-yellow. Fruit 5 lines long, 4 lines diameter. Seeds black.

In sandy soil overlying sandstone and quartzite. Summits of Mts. Broome, Leake, Rason and Bold Bluff. (W.V.F.)

Occasionally the leaves are quite connate and the calyces concrete. Affinity—E. pulverulenta Sims.

Range.

So far as we know at present, it is confined to tropical Western Australia.

Summits of Mounts Broome, May; Leake, July; Rason, September, 1905; and Bold Bluff, all Lady Forrest and King Leopold Ranges, Kimberley, north West Australia (W.V. Fitzgerald). Collected during the Kimberley Survey Expedition.

Affinities.

1. With E. perfoliata R.Br.

Both have thick perfoliate leaves which generally resemble each other, but those of E. perfoliata are longer. The flowers and inflorescence are different, while the very large fruits which belong to the section Corymbosæ, and have sunk valves, are totally different.

2. With E. alba Reinw.

The fruits have something in common and also the juvenile leaves, which are, however, petiolate in E. alba. The buds are very different. The mature leaves of E. alba are never so lanceolate as those of E. Mooreana. E. alba is a glabrous, soft, large Gum of moist flats, E. Mooreana is a crooked glaucous tree of mountain tops. (I have never seen the trees, and the above suggestions as to affinities were made as the result of examination of such herbarium material as was available to me in 1913.)




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3. With E. pulverulenta Sims.

Mr. Fitzgerald makes this suggestion, as we have already seen. For E. pulverulenta, see Part XXI, p. 12, with Plates 90 and 91. E. Mooreana is a tree of 30 feet; E. pulverulenta is a tall spindly shrub. Both of them, so far as we are aware, have broad leaves in all stages, although apparently those of the latter species do not attain the size that those of the former do. The buds possess a good deal of similarity, but those of E. pulverulenta never exceed three in number, while those of E. Mooreana may have as many as eight. The valves of those of E. Mooreana are more exsert than those of E. pulverulenta, and the fruits are probably rather smaller. The geographical positions of the two species are widely different, and the absence of photographs of the tree and of specimens of bark and timber make it difficult, under the circumstances, to assess the affinities of E. Mooreana. Mr. Fitzgerald had such remarkable success in collecting in the Kimberleys, and describing new forms, that it is to be hoped that this area will be further botanically explored, in order to still further add to our knowledge of the affinities of the Eucalypts and other genera.

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