New Zealand Journal of Botany abstract
Fruit anatomy of Clianthus puniceus and Swainsona
novae-zelandiae (Fabaceae - Galegeae)
P. B. HEENAN
Manaaki Whenua - Landcare Research
P. O. Box 69
Lincoln, New Zealand
The anatomy of the fruit of
Clianthus
puniceusSwainsona novae-zelandiae is described. Distinctive
features of
i>C. puniceus include a thick mesocarp with 30-36 layers of
parenchymato
cells, a layer of fibres 4-12 cells high, and the fibres of an
average lengt
of 0.86 mm and oriented transverse to the longitudinal axis
of the fruit.
>S. novae-zelandiae has a thin mesocarp with 10-14 layers
of parenchymato
cells, and two layers of fibres in which each layer is 1-2
cells high and t
layers are crossed and oriented diagonal to the longitudinal
axis of the fruit
The fibres are an average length of 0.51 mm. The
dehiscence mechani
s differ, the fruit of
S. novae-zelandiae having an
abscission layer th
ugh the median vascular system and dehiscence promoted by
differential shrinka
of the crossing fibres. The follicle of
C.
puniceus is likel
to dehisce by differential shrinkage of different cell
layers.
Keywords
layers.
p;Fabaceae; Galegeae; Clianthus puniceus;
Swainsona novae-zelan
ae; fruit; anatomy; dehiscence; New Zealand
flora
B96026
flora
B96026
pted 11 September 1996
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