Euphorbiaceae



Euphorbia heteradena
JAUB. ET SPACH
Euphorbia heteradena
JAUB. ET SPACH

Euphorbia L.
Euphorbia heteradena JAUB. ET SPACH
Ömür: Çok yıllık
Yapı: ot
Hayat formu:
İlk çiçeklenme zamanı: 5
Son çiçeklenme zamanı: 9
Habitat: gölkenarı bataklık, step, kumlu tepeler, taşlı yamaçlar, tarlalar, yolkenarları
Minimum yükseklik: 1000
Maksimum yükseklik: 2300
Endemik: -
Element: İran-Turan
Türkiye dağılımı: D. Anadolu
Genel dağılımı: Kafkasya, K. Irak, İran (G. Hariç), Afganistan
Bulunduğu iller
Bulunduğu kareler : A9 B9 B10 C10

 
E. heteradena Jaub. & Spach, I11. PL Or. 2: t. 131 (1845). Syn: E. ispahanica Boiss., Diagn. ser. 1(7):91 (1846); E. megalantha Boiss., op. cit. 95 (1846)! E. coriacea C. Koch in Linnaea 21:730 (1849); E. froedinii Rech. fil. in Symb. Bot. Upsal. 21(5):48, t. 24 (1952). Ic: Boiss., Ic. Euphorb. t. 59 (1866); Rech. fil. & Schiman-Czeika in Fl. Iranica 6: t. 3 f. 1, 2 (1964). Figure 17.
Glabrous glaucous perennial to 70 cm, often with lateral leafy branches developing later from near base. Cauline leaves linear to lanceolate, 3-8(-9) x 0.2-2(-3) cm, acute or subacute, cuneate, ± entire. Ray-leaves lanceolate to ovate-trullate, 2-7 x 0.5-3.5 cm. Raylet-leaves resembling ray-leaves, but smaller. Rays (3-)5(-6). Glands transversely ovate, ± truncate or shallowly crescent-shaped. Cyathial lobes linear. Fruit 5-6 mm diam., smooth. Seeds ± square in outline, rounded-quadrangular in section, 3.5 mm, smooth, pale grey; caruncle strongly fluted, 1.5 mm. Fl. 5-9. Lakeside marsh, steppe, sandy hills, stony slopes, fields, roadsides, 1000-2300 m.
Type: [Iran] Ispahan (Esfahan), Aucher 5313 (holo. P, iso. K! W).
E. Anatolia. A9 Kars: Tuzluca, 1000 m, D. 43636! B9 Bitlis: Nemrut Da., 1750 m, D. 23561! Van: Edremit to Gevaş, 2000 m, D. 22661! B10 Ağri: nr Doğubayazit, 1650 m, D. 43953! Van: N.E. of Başkale, 2300 m, D. 44534! C10 Hakkari: Zab gorge, 1800 m, D. 45837! Caucasia, N. Iraq, Iran (except S.), Afghanistan. Ir.-Tur. element. The related species E. retusa Forsskål is wrongly recorded by Tchihatcheff (Asie Min. Bot. 1:163, 1860) from Bithynian Olympus (Ulu Da.); this species is found only in N. Africa, Palestine, Jordan and Iraq. Sect. Esula Dumort. Perennial herbs. Leaves pinnately nerved, usually mem-branous, sometimes coriaceous. Glands 2-horned. Fruits trilobate, smooth or granulate. Seeds smooth. Caruncle small, conical.
Subsect. Esulae Boiss. ex Pax. Raylet-leaves free.