New Zealand Journal of Botany abstract
B97008
Received 31 January 1997; accepted 24 March 1997
Wood anatomy of the Carmichaelia (Fabaceae) complex in
New Zealand
P. B. HEENAN
Landcare Research
P. O. Box 69
Lincoln, New Zealand
Abstract Wood anatomy of Carmichaelia australis,
Ca. compacta, Ca. corrugata, Ca. monroi, Ca. nana,
Ca. odorata, Ca. petriei, Ca. williamsii,
Chordospartium muritai, Ch. stevensonii, Corallospartium
crassicaule, Notospartium carmichaeliae, N. glabrescens, and
N. torulosum is described. These species share vessels with helical
thickening and simple perforations; vessels, axial parenchyma, and short rays
arranged in storied structure; predominantly fusiform parenchyma; and rays 1-20
cells wide. The ray cells of Carmichaelia and Corallospartium are
procumbent, square, or upright, and those of Chordospartium and
Notospartium procumbent.
The wood of the Carmichaelia complex has well developed xeromorphic
features that include narrow diameter and short vessel elements, high numbers
of vessels per mm2, and the vessels usually arranged in pronounced
diagonal aggregations. Vulnerability and mesomorphy indices are calculated and
these support the relationship between species wood anatomy and the xeric
habitats they occupy.
Keywords Fabaceae; Galegeae; Carmichaelia;
Chordospartium; Corallospartium; Notospartium; wood
anatomy; New Zealand flora
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