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Casuarina
L.
Published In:
Amoenitates Academici . . . 4: 123, 143. 1759. (
Amoen. Acad.
)
Project Name Data
(Last Modified On 6/2/2011)
Acceptance :
Accepted
Project Data
(Last Modified On 6/3/2011)
Contributor Text:
Rubina Dawar
General/Distribution:
A genus of c.50 species, distribution same as that of the family; widely cultivated.
Comment/Acknowledgements:
The genus
Casuarina
L. is now split into 4 small genera viz.
Gymnostoma
L.A.S. Johnson,
Ceuthostoma
L.A.S. Johnson,
Allocasuarina
L.A.S. Johnson and Casuarina L., on the bases of texture of bracts of infructescence, presence or absence of visible stomates and colour of samaras.
Casuarina
is more closely related to
Allocasuarina
by having invisible stomates and relatively thin and inconspicuous bracts. However,
Casuarina
can be differentiated from
Allocasuarinas
by having grey or yellow-brown samara and bracteoles of infructescence thin and without dorsal protuberance. All our species belong to
Casuarina
.
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Trees or shrubs. Furrows of branchlets deep and narrow. Nodal leaf sheath 6-many-toothed, triangular. Bracts remain thin even in infructescence. Samaras pale grey or yellow-brown, with minute slightly raised wavy lines along the surface.
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1
Branchlets pale green - brownish green. Nodal leaf-sheaths with 6-11 teeth
(2)
+
Branchlets glaucous. Nodal leaf-sheaths with 14-17 teeth
2
Casuarina
glauca
2
(1)
Nodal leaf-sheaths with 6-(7)-8 teeth
1
Casuarina
equisetifolia
+
Nodal leaf-sheaths with 9-11 teeth
3
Casuarina
junghuhniana
Lower Taxa
!
Casuarina
equisetifolia
L.
Casuarina
glauca
Sieber ex Spreng.
Casuarina
junghuhniana
Miq.
Casuarina
montana
Lesch. ex Miq.
=
Casuarina
junghuhniana
Miq.