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

PARIETARIA L.

Annual or perennial herbs, sometimes woody at base, without stinging hairs. Lvs alternate, entire, exstipulate. Cymes axillary. Fls inconspicuous, ⚥ or unisexual, bracteolate. Perianth green or variously tinged; perianth of ♀ fls 4-partite; perianth of ⚥ fls 4-partite, connate at base at flowering, becoming tubular and 4-toothed at fruiting; ⚥ fls strongly protogynous. Achenes enclosed in perianth and sometimes in bracteoles.

Key

1
Annual; petioles often > lf blades; lvs thin, delicate; bracteoles = or > perianth at fruiting
3. debilis
Perennial; petioles < lf blades; lvs thick; bracteoles < perianth at fruiting
2
2
Procumbent or ascending; bracteoles shortly connate at base; lvs 1-4-(5) cm long
1. *judaica
Erect; bracteoles free; lvs 3-12 cm long
2. *officinalis

30 spp., temperate and tropical. Native sp. 1, naturalised 2.

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