familyCasuarinaceae
genusCasuarina
Show Lower Taxa
Difference between revisions of "Casuarina"
Amoen. Acad. 4: 143. 1759.
Common names: She-oak
Etymology: Neo-Latin casuarius, cassowary, from resemblance of drooping branchlets to feathers of the cassowary
Treatment appears in FNA Volume 3.
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Latest revision as of 22:51, 5 November 2020
Young persistent branchlets distinguished from deciduous branchlets by shorter segments and differences in shape or size of leaves; furrows deep and closed, concealing stomates. Infructescences pedunculate, pubescent at least when immature; bracts thin in exposed portion, not vertically expanded; bracteoles ± protruding from surface of infructescence, never greatly thickened, always lacking dorsal protuberance. Samaras pale yellow-brown or grayish, dull, glabrous. x = 9.
Distribution
Almost throughout range of family.
Discussion
Species 17 (3 in the flora).
Hybrids are frequent in cultivation; in the flora, hybrids are known between all combinations of the three species.
Selected References
None.
Key
| 1 | Longitudinal ridges of branchlets flat or slightly rounded-convex; leaf teeth 12–17; teeth on young permanent shoots long-recurved. | Casuarina glauca |
| 1 | Longitudinal ridges of branchlets prominently angular; leaf teeth (6–)7–10; teeth on young permanent shoots erect to spreading. | > 2 |
| 2 | Branchlets ± densely and obviously pubescent; teeth (6–)7–8, not marcescent; infructescence body 12–24 × 9–11 mm, bracteoles acute; samaras 6–8mm. | Casuarina equisetifolia subsp. equisetifolia |
| 2 | Branchlets sparsely and minutely pubescent; teeth 8–10, marcescent; infructescence body 7–14 × 4–6 mm, bracteoles broad-acute; samaras 3–4 mm. | Casuarina cunninghamiana subsp. cunninghamiana |