Critical Revision of the Genus Eucalyptus Volume 8: Parts 71-80
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Critical revision of the genus eucalyptus Volume 8: Parts 71-80 Maiden, J. H. (Joseph Henry) (1859-1925) University of Sydney Library Sydney 2002 http://setis.library.usyd.edu.au/oztexts © University of Sydney Library. The texts and images are not to be used for commercial purposes without permission Source Text: Prepared from the print edition of Parts 71-80 Critical revision of the genus eucalyptus, published by William Applegate Gullick Sydney 1933. 354pp. All quotation marks are retained as data. First Published: 1933 583.42 Australian Etext Collections at botany prose nonfiction 1910-1939 Critical revision of the genus eucalyptus volume 8 (Government Botanist of New South Wales and Director of the Botanic Gardens, Sydney) “Ages are spent in collecting materials, ages more in separating and combining them. Even when a system has been formed, there is still something to add, to alter, or to reject. Every generation enjoys the use of a vast hoard bequeathed to it by antiquity, and transmits that hoard, augmented by fresh acquisitions, to future ages. In these pursuits, therefore, the first speculators lie under great disadvantages, and, even when they fail, are entitled to praise.” Macaulay's “Essay on Milton” Sydney William Applegate Gullick, Government Printer 1933 Part 71 CCCLXXXIII. E. Bucknelli Cambage In Proc. Linn. Soc., N.S.W., li (1926), 325, with Plate 22. FOLIA MATURA lanceolata, longa circa 6–15 cm., lata 1–3 cm., cum punctus rectis aut uncis, viridia prope cinerea, interdum glauca in utramque partem, glabra, costa media distincta, venae laterales aliquanto prominentes, dispositae ex costa media cum angulo circa 45–55 graduum, cum venularum tenuiorum reticulo interveniente, vena intra marginem aliquanto procul margine, glandulae olei parvae sed multae, petiolus longus 2 mm. ad 1 cm. Gemmae clavatae, in breve pedicellatae, acutae leviter glaucae calycis tubus aliquanto campanulatus longus 3–4 mm., staminis annulus parvus sed distinctus, directus, operculum in coni forma longum 2–3 mm. Fructus in piri aut ovi forma, truncati, longi 4–5 mm., diametros 3–6 mm. valvae fere exsertae, pedunculi longi 5 mm. ad 1.4 cm. A tree about 40 feet high, with stem-diameter of 18 inches to 2 feet. Branchlets terete, brown to glaucous. Mature leaves lanceolate, from about 6 to 15 cm. long, 1–3 cm. broad, with straight or hooked points, greyish-green to sometimes glaucous on both sides, glabrous, midrib distinct, lateral veins fairly prominent, arranged at an angle of from about 45 to 55 degrees with the midrib, with a network of finer veinlets between, intramarginal vein fairly distant from the edge, oil glands small but numerous, petiole 2 mm. to 1 cm. long. Buds clavate, shortly pedicellate, acute, slightly glaucous, calyx-tube somewhat campanulate, 3 4 mm. long, staminal ring small but distinct, vertical, operculum conical, 2–3 mm. long. Flowers pedicellate, umbels chiefly in terminal panicles, with three to seven flowers, anthers semiterminal, broad, somewhat like those of E. crebra, gland at back, filament nearly at the base. Fruits pyriform to ovoid, truncate, 4–5 mm. long, 3–6 mm. in diameter, valves usually exserted, peduncles 5 mm. to 1.4 cm. long. Bark shortly fibrous to slightly furrowed. Timber reddish-brown, very hard, heavy and interlocked. Habitat.—About 20 miles north of Mungindi (type), Mookoo, and at Bumble in Queensland. About 15 miles south-east of Moree (Forest Guard W. M. Brennan). This species is named in honour of Adrian Wentworth Bucknell, Licensed Surveyor of Mookoo, who is much interested in the local plants, and has supplied many native names. Affinities Its closest affinity appears to be with E. melanophloia and E. microtheca, but it seems to be more closely associated with the former in the forest, the two species often growing together, while E. microtheca may be a quarter of a mile away. E. populifolia and E. bicolor may be also growing near. Its bark on the trunk and branches may be described as being between that of a box tree and an ironbark, while the fruits somewhat resemble those of E. microtheca, although the valves of the latter are more exserted. In shape, the fruits are not unlike those of E. melanophloia, especially those from about 20 miles north of Mungindi (No. 4,462). The small-fruited form of E. Bucknelli (No. 4,389) from the south of Mungindi somewhat resembles E. populifolia and E. bicolor so far as the fruits are concerned, but the leaves and venation are different. From E. Yagobiei Maiden it differs mainly in the shape of the fruits and to some extent in the bark. The fruits of E. Yagobiei have strongly exserted valves. If it could be shown that this tree originated as a hybrid, then its parents would appear to be E. melanophloia and E. microtheca, but the trees are so numerous that it seems evident the species now reproduces itself, whatever may have been its origin. It is remarkable that where natural Eucalyptus hybrids are suspected, one of the supposed parents often belongs to the group of trees popularly known as Ironbark, while the other belongs to the Box group. Seedlings (No. 4,402 from Bumble). Plate 22, fig. 1. (Proc. Linn. Soc. N.S.W.) Hypocotyl terete, red, glabrous, 6 mm. to 1.5 cm. long. Cotyledons obtusely oblong to slightly reniform, entire, 2 to 2.5 mm. long, 3 to 5.5 mm. broad, upperside green, underside pale green; petiole 2 to 3 mm., reddish near base. Stem terete, red. First and second internodes, 3 to 5 mm.; third, 4 to 6 mm. Seedling foliage opposite for at least four or five pairs,* entire, glabrous, linear- lanceolate, upperside green, underside pale green, petiole 1 to 1.5 mm. First pair 5 to 8 mm. long, 1.5 to 2.5 mm. broad; second pair, 9 mm. to 1.3 cm. long, 1.5 to 3 mm. broad; third pair, 1 to 1.4 cm. long, 2 to 3 mm. broad. * Since found to be sometimes as many as twenty pairs.—R.H.C. CCCLXXXIV. E. perplexa Maiden and Blakely, n.sp IRONBARK mediocris; cortice obscuro, valde sulcatis; foliis junioribus oblongis; foliis maturis oblongis vel oblongo-lanceolatis, tenuibus, inconspicue venosis, petiolatis, 4–8 cm. longis, 1–2.5 cm. latis; fructu globoso, pedicellato, truncato vel valvis exsertis, 4–5 mm. A medium-sized ironbark; bark dark-coloured, deeply furrowed. Juvenile leaves, not seen in the earliest stage, oblong, obtuse. Young twigs slightly pruinose. Intermediate leaves, also imperfect, alternate, broadly oblong to oblong- lanceolate, usually emarginate, 4–9 cm. long, 2–3 cm. broad, shortly petiolate. Adult leaves alternate, petiolate, oblong to lanceolate, often somewhat obtuse or minutely apiculate, 4–8 cm. long, 1.5–2.5 cm. broad. Venation obscure, the midrib slightly raised beneath, flat or very faintly furrowed above; lateral veins very fine, diverging at an angle of 35–45° with the midrib; intramarginal vein very close to the revolute margin, or confluent with it. Inflorescence forming small axillary or terminal panicles. Buds not seen. Fruit sub-globose, 4x5 mm., truncate, pedicellate, the very small valves sometimes exsert. Range It seems to be confined to tropical Western Australia and the Northern Territory. The following are the localities:— Western Australia: Between Erskine Range and Mount Marrion, August, 1906. “On gravelly plains between Isdell River and Scented Knob occurs, of a few square miles in extent, an open forest of Ironbark” (W. V. Fitzgerald, June, 1905); Isdell River, near Mount Barnett Homestead, also at Barnett River (W. V. Fitzgerald, June, 1905). Northern Territory: Roper River Crossing (Professor Baldwin Spencer, and others, July-August, 1911). This specimen is not quite so glaucous as the previous specimens. Affinities 1. With E. crebra F.v.M. The similarity as regards the leaves is obvious, but those of E. perplexa are more oblong and glaucous than those' of E. crebra. The small fruits of E. perplexa are undoubtedly somewhat similar to those of E. crebra, but the fruits of the former are more spherical and more glaucous than those of the latter. 2. With E. Culleni Cambage. This is also a tropical Ironbark, but the leaves are greener, the fruits, although somewhat spherical, are distinct in shape and size from the fruits of E. perplexa. 3. With E. melanophloia F.v.M. This appears to be its closest affinity as regards glaucousness and the shape of the fruit. In fact, it was regarded as a lanceolate-leaved form of E. melanophloia, but we now think that it is a species distinct from E. melanophloia. CCCLXXXV. E. conglomerata Maiden and Blakely, n.sp ARBOR parva, stringybark; cortice aspero, fibroso, sulcato; foliis junioribus, lineari-lanceolatis, stellatopilosis; foliis maturis lanceolatis vel obliquo-lanceolatis, 6–12 cm. longis, 11/2–3 cm. latis; alabastris parvis, numerosis confertis in capitulis densis; fructu urceolato vel globoso, sessili in capitulis parvis globoso. A small Stringybark, 12–20 feet high; bark rough, thick, fibrous, deeply furrowed. Juvenile Leaves not seen in the earliest stage, alternate, sessile to very shortly petiolate, narrow-lanceolate somewhat scabrous, with minutely denticulate, slightly revolute margins and when very young stellate-hairy, 1.5–4 cm. long, 4–8 mm. broad. Venation obscure. Intermediate Leaves alternate, very shortly petiolate, narrow-lanceolate to obliquely lanceolate, thick, light green, 4–8 cm. long, 1.5–3.5 cm. broad; venation obscure, lateral veins diverging at an angle of 40–50° to the midrib; intramarginal vein close to the edge. Mature Leaves alternate, lanceolate to obliquely lanceolate or falcate-lanceolate, thick, coriaceous, somewhat glossy, 6–12 cm. long, 1.5–4 cm. broad; venation rather fine and somewhat obscure; lateral veins spreading at an angle of 25–30° to the midrib; intramarginal vein close to the edge.