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Volume IV (1988) - Flora of New Zealand Naturalised Pteridophytes, Gymnosperms, Dicotyledons
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Blackstonia Huds.

BLACKSTONIA Hudson

Glabrous, erect, annual herbs. Lvs sessile; lf pairs distant along stem. Cymes terminal, several-flowered, occasionally fls solitary. Calyx deeply divided into 6-12 linear lobes. Corolla rotate; lobes 6-12, > tube, yellow. Anthers basifixed, oblong to linear, not or slightly twisted spirally after dehiscence. Style filiform, caducous; stigma deeply 2-lobed. Capsule ovoid to ellipsoid; valve margins not intrusive. Seeds numerous, minute.

5-6 spp., Europe and Mediterranean region. Naturalised sp. 1.

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