H. triqetrifolium Turra, Farsetia Nov. Gen. 12 (1765). Syn: H. crispiim L., Mant. 106 (1767). Ic: Sibth. & Sm., Fl. Gr. 8: t. 776 (1833).
Stems 15-55 cm, erect or decumbent, 2-lined, with branches widely spreading, usually forming a pyramid. Leaves 3-20 mm, triangular-lanceolate or rarely narrowly ovate to linear-oblong, amplexicaul, undulate, sometimes with medium to small pellucid dots. Sepals oblong to ovate-oblong, rounded or apiculate, entire or denticulate, without black dots. Petals 5-7 mm, without or occasionally with one superficial black dot. Capsule 3-5 mm, ovoid, with longitudinal vittae and occasionally a few lateral vesicles. Fl. 5-9. Open dry stony and sandy ground and cultivated fields, s.I.-1250 m.
Syntypes from Greece, Sicily & Calabria.
A1(E) Çanakkale: Gelibolu, Kilia, Ingoldby 585! A1(A) Çanakkale: nr. Erenköy, vi 1856, Kirk! A2(E) Istanbul: Küçük Çekmece to Büyük Çekmece, 50-100 m, D. 39246! A2(A) Istanbul: Prinkipo (Büyükada), ix 1903, Azn.! A5 Amasya: nr. Sana, 350-500 m, Bornm. 1498! A6 Tokat: Tokat, Wiedemann 35! Bl Izmir: Burnabat nr. Izmir, Uvarov 28! B2 Manisa: Philadelphia (Alaşehir), Boiss.1 B4 Ankara: Ankara, 875 m, Frödin 199! B6 Maraş: d. Elbistan, Kapidere, D. 20419! B7 Elazığ: 60 km E of Elaziğ, D. 24813! B8 Siirt: Sassun nr. Goro, 1600 m, Hand.-Mazz. 2914; Bitlis: Bitlis gorge south of Kambos Da., 1250 m, McNeill 598! B9 Bitlis: Bitlis cevari, Bay top 4926! Cl Muğla: Datça to Marmaris, 10 m, Dudley, D. 35439! C2 Denizli: Taş Ocaği nr. Denizli, D. 13246! C3 Antalya: Akseki to Manavgat, 140 m, Hub.-Mor. 9150! C4 Içel: Mut, II viii 1963, Huber! C5 Içel: above Tarsus, 250 m, Krause 480. C6 Hatay: Reyhanlı, 90 m, Brown 274! C7 Urfa: N of Urfa, Hand.-Mazz. C8 Diyarbakir: c. 30 km from Diyarbakir, c. 750 m, McNeill 487!
S. Europe, N.W. Africa, Çyrenaica, Cyprus, W. Syria, Syrian Desert, Sinai, N. Iraq, S. Iran.