Hypericum hyssopifolium subsp. hyssopifolium

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 265

(a) Subsp. hyssopifolium :

Leaves obtuse, not apiculate. Sepals subequal, usually continuously glandular-denticulate. Petals 7-9(-10) mm. Capsule (5-)6-8-5 mm. Throughout the range of the species, except Greece.

Plants from Krym, which have been named H. chrysothyrsum Woronow in Kusn., N. Busch & Fomin, FI. Cauc. Crit. 3 (9): 30 (1906), are very similar to 20(a), but may be better placed in H. lydium Boiss., Diagn. Pl. Or. Nov. 1 (1): 57 (1842).