Erect annuals up to 60 cm tall. Leaves oblong, 1-5 x 0,4-1,2 cm. Bracts usually stipulate. Flowers subsolitary in leafy racemes, or in long, lax, sometimes branched inflorescences of 5-10 flowers per axis. Pedicels erect in flowers and fruit, as long as, or shorter than, the calyx. Sepals acuminate. Capsules 4-12 mm. Fl. 5-6. Dry calcareous places, rocky slopes, scrub, vineyards, etc., 500-1400 m, often collected with H. salicifolium.
1. Capsules 9-12 mm, about as long as the calyces; pedicels 6-7 mm; flowers usually distant and few, the axes divergent at the nodes
2. Capsules glabrous, except for valve margins and apices var. ledifolium
2. Capsules shortly hairy all over var. lasiocarpum
1. Capsules 4-7 mm, usually less than the calyces; pedicels 2-5 mm; flowers more conferted, or if distant, then in an elongated many-flowered cincinnus with a straight axis var. microcarpum