This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
Silver-leaved Iron-bark. Small tree: bark persistent, dark, furrowed: leaves sessile, orbicular to ovate-lanceolate, glaucous or white-mealy: flowers small, in terminal or axillary corymbs: fruit truncate-globular, 2-3 lines across; rim thin; valves included or slightly exserted.
Broad-leaved Ironbark. Tall tree: bark wholly persistent on old trunks, rough and deeply furrowed; furrows yellowish or dark brown; ridges broader than in other ironbarks: leaves 4-7 in. long: lid beak-like, very acute, 1/4- 1/2in. long; stamens about 3 lines long; anthers minute, globular, opening by oblong slits: fruit obovoid, truncate, about 1/4in. across, the valves slightly protruding. Oct., Nov. F.v.M. Eucal. 4:8. Maiden, Crit. Rev. Eucal. 47 (figs. 19-33). - Wood heavy, strong, and durable, useful for wagon work, tool-handles, building, posts, poles, and the like. Flowers provide honey for bees. Tree of rapid growth and resistant to extremes of temperature: grown in the San Joaquin Valley.
White Ironbark. Red Ironbark. Tall or medium-sized tree: bark hard, persistent, deeply furrowed, of a grayish brown color: leaves lanceolate, acuminate, 3-5 in. long: flowers in panicles or sometimes in axillary umbels; lid variable; stamens 2-4 lines long, the outer ones sterile; stigma dilated: fruit truncate-ovate, pedicelled, 2-4 fines wide, with thin rim. Summer. F.v.M. Eucal. 5:8. Maiden, Crit. Rev. Eucal. 57 (figs. 8-21). - Wood usually very pale, but variable; the hardest of ironbarks; "cuts almost like horn:" valuable for railroad-ties, fencing, and building purposes. Does not endure heat and drought: much prized in Austral., but trees in Calif. are not promising.
Tall tree with thin angular branchlets: bark deciduous, leaving the branches smooth and gray, but often persistent on the trunk: leaves lanceolate, opaque, 3-5 in. long: flowers exceedingly small, white, short-stalked; lid slenderly conic, under 2 lines long; stamens not 2 lines long; anthers reniform, opening by longitudinal slits: fruit little over 1 line wide, low-cup-shaped, the protruding valves forming a hemispheric summit. F.v.M. Eucal. 1:8. Maiden, Crit. Rev. Eucal. 53 (figs. 1-3).
Tree, becoming 80 ft. high: bark rough, gray, persistent, or the outer layers deciduous, leaving the trunk smooth: leaves narrowly lanceolate, 4-6 in. long: lid broad-conic; stamens very short; anthers minute, roundish, opening by longitudinal slits: fruit scarcely 1/4in. wide; valves fully halfprotruding. F.v.M. Eucal. 10:6. Maiden, Crit. Rev. Eucal. 52 (figs. 16-22). - Not yet fully tested in Amer.: endures frost and heat: recommended as a forest cover for the hot dry region of the S. W.: the roots yield water to natives and travelers on the Australian deserts. Wood beautifully colored but perhaps too hard for cabinet work.
Narrow-leaved Ironbark. Small to large tree, with slender drooping branchlets: bark persistent throughout, hard, dark, ridged and deeply furrowed: leaves pale, narrow, linear-lanceolate; lateral veins fine, nearly parallel, widely diverging from the midrib: lid conical or nearly hemispheric, not over 2 lines long; stamens 1 or 2 lines long, inflexed in bud; anthers globular, opening by longitudinal slits: fruit obovoid-truncate, not over 2 lines wide, the tips of the valves not or scarcely exserted. F.v.M. Eucal. 5:3. Maiden, Crit. Rev. Eucal. 53 (figs. 4-9). - A rapidly growing frost-resistant tree of picturesque habit: endures minimum temperatures of 18-20° and maximum temperatures of 110-118° (McClatchie), not very resistant to alkali (Loughridge). Grown in Calif. for its hard durable wood, of a reddish color. Bark sometimes described as grayish and deciduous.
Characters as in E. crebra, but flowers somewhat larger and fruit 3 or 4 lines wide: leaves of a silky sheen. - This has been classed as a variety of E. drepanophylla, F.v.M., but the two are now known to be identical and E. leptophleba is the older name.
15. bicolor, A. Cunn. (E. largiflorens, F. v. M.). Black Box. Shrub or small tree, with drooping branches: bark persistent, rough and hard: leaves lanceolate, 5 in. or less long; lateral veins at an acute angle to midrib: lid double, the inner one hemispheric; stamens 1 or 2 lines long; anthers opening by lateral pores: fruit truncate-ovate, about 2 lines wide, the valves inclosed but not distant from the thin rim. F.v.M. Eucal. 5:7. Maiden, Crit. Rev. Eucal. 49 (figs. 5-13), 51 (figs. 9-19). - Timber hard, tough, and durable, rather easily worked: suitable for ties, piles, shafts, poles, cogs, and the like.
Australian Gray Box. Tree, 90 ft. or less high: bark of trunk persistent, solid, grayish and somewhat wrinkled; of branches deciduous in flakes or long strips: leaves lanceolate-falcate to ovate-lanceolate, 3-5 in. long, thick and rigid, often ashy gray; lateral veins distant, diverging at a very acute angle: lid conical; stamens pale, about 2 lines long; anthers globular, opening by lateral pores: fruit ovoid-oblong, truncate and slightly contracted at orifice, about 3 lines wide. F.v.M. Eucal. 5:5. Maiden, Crit. Rev. Eucal. 50 (figs. 1-6). - Useful as a shade tree because of its dense foliage; also for fuel and as pasturage for bees. Wood hard, tough, and durable.
Variety albens, F. v. M. (E. albens, Miq.). White Box. Bark dull green, persistent: leaves glaucous or white-mealy: buds chalk-white: fruit larger.
Stout shrub, 6-15 ft., usually white-mealy: leaves all opposite, sessile, cordate-ovate: flowers orange-colored to crimson, very large, solitary; calyx-tube smooth or obscurely ridged: lid conical, longer than the tube; stamens about 1 in. long: fruit depressed-hemispherical, l 1/4 - 3 in. across, with raised rim and broad protruding valves. Hook. Icon. 405-407. B.M. 4333. F.v.M. Eucal. 8:4. Maiden, Crit. Rev. Eucal. 77 (figs. 1-3). - Desirable ornamental because of its glaucous foliage and brilliant bloom: grown sparingly in S. Calif.