Ruta L.

1. Ruta L. View in CoL 2

Perennial herbs, more or less woody below. Leaves alternate, 2- to 3-pinnatisect, ultimate segments linear io obovate. Inflorescence cymose, bracteate, Sepals and petals 4, or frequently 5 in the central flower. Petals cuculiate, yellow, dentate or ciliate or more rarely entire. Stamens twice as many as the petals; filaments glabrous, attenuate. Capsule 4- to 5-lobed, dehiscent. Styles connate. All species grow in dry, usually rocky situations. 1 Leaf-segments linear; pedicels shorter than the capsule; petals not denticulate or ciliate 1. montana

1 Leaf-segments oblanceolate to oblong-obovate; pedicels as long as or longer than the capsule; petals denticulate or ciliate

2 Petals fringed with long cilia

3 Bracts not or scarcely wider than the branches which they subtend; plant glandular-puberulent above 2. angustifolia

3 Lower bracts much wider than the branches which they subtend; plant glabrous throughout 3. chalepensis

2 Petals denticulate, without long cilia

4 Sepals lanceolate, acute; pedicels slightly longer than the capsule 4. graveolens

4 Sepals deltate-ovate, obtuse; pedicels at least twice as long as the capsule 5. Corsica