Juncus bulbosus, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1980, Flora Europaea. Volume 5. Alismataceae to Orchidaceae (Monocotyledones), Cambridge: Cambridge University Press : 109

39. J. bulbosus L. , Sp. Pl. 327 (1753)

( J. supinus Moench , J. kochii F. W. Schultz ).

Caespitose perennial; rhizome absent; new shoots produced from the basal internodes of the stem. Stems 1-30 cm, sometimes up to 100 cm when floating or submerged, with a basal bulb-like swelling. Leaves mostly more or less basal, terete and slightly flattened to furrowed dorsally, pluritubulose, imperfectly or partly perfectly septate. Inflorescence of 3-20 heads each with 2—15 flowers; flowers often partly replaced by adventitious shoots. Perianth-segments 2-3 mm, equal or the inner slightly longer than the outer, ovate to lanceolate or the inner oblong, obtuse or outer acute, with a wide scarious margin. Stamens 3-6, as long as perianth; anthers 0-3-1 mm, i as long to as long as the filaments. Capsule 2-2- 3- 5 mm, equalling or exceeding perianth, trigonous, obtuse to truncate at apex, unilocular. Seeds 0-5-0-6 mm, turbinate, reticulate. 2n = 40. Wet places, often submerged; somewhat calcifuge. Most of Europe except the south-east. Au Az Be Br Co Cz Da Fa Fe Ga Ge Hb He Ho Hs Hu Is It Ju Lu No Po?Rm Rs (N, B, C, W) Sa Su.