Trollius L. Trollius Trollius, L.

6. Trollius L. View in CoL 1

Perennial herbs. Flowers with all parts spirally arranged. Perianth-segments 5-15, petaloid; honey-leaves 5-15, small, narrow, yellow. Stamens numerous. Fruit of many follicles. Perianth-segments strongly incurved; honey-leaves as long as stamens 1. europaeus

Perianth-segments not strongly incurved; honey-leaves 2-3 times as long as stamens 2. asiaticus

1. T. europaeus L. View in CoL , Sp. Pl. 556 (1753).

Plant 10-70 cm, glabrous. Basal leaves long-petiolate, 3-5 lobed; lobes cuneate and more or less deeply lobed and serrate; cauline leaves smaller and more or less sessile. Flowers up to 5 cm in diameter, globular. Perianth-segments commonly 10, lemon-yellow, rarely the outer green beneath, incurved. Honey-leaves about as long as the stamens. Follicles c. 12 mm; beak 0-5-5 mm. Widespread in Europe, but only on mountains in the south. Al Au Be Br Cz D a Fe G a Ge Hb He H u It Ju N o Po Rm Rs (N, B, C, W, E) Su.

The length of the beak of the mature follicle and the shape of the basal leaves is rather variable, especially in E. Europe. The prevalence of self-pollination probably helps to emphasize this variation. Two subspp. can be recognized:

(a) Subsp. europaeus :

Plant usually 30-50 cm; stigma 0-3- 3 mm, straight. 2« =16. Widespread.

(b) Subsp. transsilvanicus (Schur) Jâv. View in CoL , Magyar Flora 352 (1924):

Plant usually 10-20 cm; stigma 3-5 mm, more or less recurved. 2« =16. Carpathians.