Hypericum perforatum subsp. songaricum (Nomenclature)
Leaves sessile (at least on main stems); lamina 6-15 ´ 2-10 mm, oblong to oblong-ovate (l:b = 2.5-4), base ± shallowly cordate-amplexicaul, often glaucous beneath. Inflorescence not congested, with branches relatively short, straight. Petals with laminar glands all pale. Capsule valves with lateral vittae linear, narrow or slightly swollen but rarely interrupted.
Northern Kazakhstan and adjacent Kirghizstan and China (NW. Xinjiang), south-eastern Russia and the Ukraine (including Krym).
Some Crimean specimens lack the cordate leaf base of this subspecies but are otherwise clearly a reduced form of it. The following specimens are intermediate between subsp. songaricum and subsp. perforatum in having the leaves on the main stem sessile but those on branches petiolulate:
UKRAINE. Cherkasky Obl.: Uman, Farco, June 1867 (fl), Golde s.n. (BM, K). ? Obl.: Valka, zwischen Veselaya und Zingalni (?), 5 May 1865 (fl), Gruner s.n. (BM); an Ackerrändran (?) bei Condo-dorf, 18 July 1859 (fl), Gruner s.n. (BM).
The following specimen is intermediate between subsp. songaricum and subsp. veronense in having narrow leaves with those on the main stem cordate at the base.
CHINA. Xinjiang: [Kashi Xian] Yarkand Expedition, 1870 (fl), Henderson s.n. (K).
The Fraser-Jenkins specimen from the Russian Caucasus listed above also shows some characters intermediate between those of subspecies songaricum and veronense.