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Volume IV (1988) - Flora of New Zealand Naturalised Pteridophytes, Gymnosperms, Dicotyledons
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Barbarea W.T.Aiton

BARBAREA R. Br.

Biennial, sometimes perennial, herbs with stout taproot and many lesser roots. Hairs simple, or 0. Stems erect, leafy. Lvs often glossy, glabrous or sparsely hairy; margins usually bluntly toothed; lower lvs lyrate-pinnate or pinnatifid; upper lvs becoming ± sessile, amplexicaul, either deeply pinnatifid or shallowly lobed to toothed. Racemes ebracteate, rarely bracteate. Sepals suberect, the inner saccate. Petals yellow. Stamens 6, without appendages. Lateral nectaries 2, crescent-shaped at base of single stamens; median nectaries 2, rod-shaped between paired stamens. Style short; stigma slightly 2-lobed. Silique linear, dehiscent; valves with strong median and weaker reticulate lateral veins; beak 0. Seeds ellipsoid, not winged, in 1 row per locule.

Key

1
Upper-most stem lvs deeply pinnatifid
2
Upper-most stem lvs only shallowly lobed or toothed
3
2
Basal lvs with small terminal and (4)-5-8 pairs of lateral lobes; silique (3)-4-7 cm long
3. *verna
Basal lvs with large terminal and (0)-2-5 pairs of lateral lobes; silique 2-3-(4) cm long
1. *intermedia
3
Sepals hairy; terminal lobe of basal lvs much wider than rest of lf; style 1-1.5 mm long
2. *stricta
Sepals glabrous; terminal lobe of basal lvs not wider than rest of lf; style 2 mm long or more
4. *vulgaris

c. 20 spp., N. temperate and Australia. Naturalised spp. 4.

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