H. lydium Boiss., Diagn. ser. 1(1): 57 (1843). Syn: H. hyssopifolium var. lydium (Boiss.) Boiss., Fl. Or. 1: 799 (1867)! H. hyssopifolium var. lythrifolium Boiss., op. cit., 800! H. adenocladum Boiss., op. cit., 802! Figures 11, 13, pp. 359, 363. Map 22, p. 373.
Stems 10-75 cm, erect, glabrous, with ± numerous prominent red and amber glands. Leaves on main stem 9-35 mm, linear or narrowly oblong-lanceolate, often revolute, rounded, glabrous or rarely undulate-papillose, sometimes glaucous. Inflorescence cylindric or narrowly pyramidal to subspicate, 10-many-flowered. Sepals equal, ± united at the base, lanceolate to oblong, acute or subacute, regularly glandular-denticulate or with sessile glands all round. Petals 6-12 mm, rarely red-veined. Capsule 6-8 mm, ovoid and gradually acuminate to subglobose and rostrate. Fl. 5-7. Rocky slopes and Pinus woodland, 400-2700 m.
Syntypes: [Turkey B2 Izmir] ,Tmolus supra Philadeiphiam, Boissier (G!); [C2 Denizli] Cadmus supra Denisleh, Boissier (G!). A3 Bolu: Abant G., 17 vii 1940, B. Post! A4 Çankiri: Cankiri to Ilgaz, 1500 m, D. 21752! A5 Amasya: Amasya, 400-500 m, Bornm. 1889: 186! A6 Ordu: 10 km from Ünye, Jardine 416! A7 Giresun: 4 km N of Şebinkarahisar, 1260-1300 m, Hub.-Mor. 13311! A8 Gümüşane: Bayburt to Aşkali, 1820 m, Hub.-Mor. 13303! A9 Kars: nr. Kağizman (Grossheim 6: map 187). Bl Izmir: nr. Izmir, Bal. 674! B2 Kütahya: Tavşanli to Emet, 800 m, D. 36580! B4 Ankara: Beynam, D. 13094! B5 Seyhan: d. Feke, Bakir Da., 1800 m, D. 19396! B6 Sivas: Sivas, vi 1852, Noel B7 Malatya: Malatya, 1020 m, Balls 2298a! B8 Erzurum: Erzurum, Zohrab 483! B9 Van: Ispiriz Da., 2600 m, D. 23625! C2 Burdur: Dirmil to Tefenni, 1200 m, Hub.-Mor. 5236! C5 Içel: Gülek Boğaz, Bal. 674! C6 Maraş: between Narli & Karabiyikli, 600-700 m, D. 27798! C9 Hakkari: Koçanis, D. 24314b! N. Iraq, Caucasus. Centred in Ir.-Tur. territory.