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

SINAPIS L.

Annual, sometimes perennial, taprooted herbs. Hairs simple, often bristly. Stems erect, leafy. Lvs lyrate-pinnate, lyrate-pinnatifid, or not lobed; margins toothed. Racemes ebracteate. Sepals spreading, not saccate. Petals yellow. Stamens 6, without appendages. Lateral nectaries 2, inside the bases of the single stamens; median nectaries 2, outside each median pair of stamens. Stigma sessile, shortly 2-lobed. Silique narrow-lanceolate to linear, dehiscent; valves distinctly 3-(7)-veined; beak tapering, weakly to strongly flattened, 0-9-seeded. Seeds spherical, not winged, in 1 row per locule.

Key

1
Silique (1)-3-6-(8)-seeded; beak broad and flattened; terminal leaflet usually 3-lobed
1. *alba
Silique 8-20-seeded; beak narrow and slightly flattened; terminal leaflet not lobed
2. *arvensis

c. 10 spp., Europe and Mediterranean. Naturalised spp. 2.

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