Apocynaceae

Trachomitum venetum

Trachomitum WOODSON Trachomitum venetum (L.) WOODSON subsp. sarmatiense (WOODSON) AVETISIAN Ömür: Çok yıllık Yapı: ot Hayat formu: İlk çiçeklenme zamanı: 6 Son çiçeklenme zamanı: 8 Habitat: denizsel kumlar, nehir kıyıları, nehir kenarı çalılıklarında Minimum yükseklik: 0 Maksimum yükseklik: 1800 Endemik: - Element: D. Akdeniz Türkiye dağılımı: Türkiye Genel dağılımı: Karadeniz Kıyılarından Balkanlar'a Kadar, G. Rusya, Transkafkasya, İran, Kıbrıs Bulunduğu kareler :A1 A2 A4 A8 B1 B7 C2 C3 C4 C10

T. venetum (L.) Woodson in Ann. Missouri Bot. Gard. 17:158 (1930). s'yn: Apocynum venetum L., Sp. PI. 213 (1753). subsp. sarmatiense (Woodson) Avetisian in Biol. Zhurn. Arm. 20(2): 104 (1967); Takht. & Fedorov, Fl. Erevana ed. 2, 202 (1972). Syn: Trachomitum sarmatiense Woodson in Ann. Missouri Bot. Gard. 17:162 (1930); Apocynum sarmatiense (Woodson) Wissjul. in Fl. URSR 8:266 (1958). Much-branched perennial, 40-240 cm, glabrous (except for minutely pubescent pedicels, calyx and corolla), with creeping rhizome. Leaves very variable in size and shape, from narrowly ovate and oblong-lanceolate to narrowly lanceolate, 2-7 cm x 6-25 mm, margin denticulate; petiole 2-6 mm. Inflorescence loose, usually much-branched, many-flowered, rising well above uppermost leaves. Calyx 1.5-2 mm, lobes acute. Corolla pink, 5-7 mm, pubescent; lobes oblong, rounded, 2-5-3-5 x 1.2-1-5 mm. Pollen mostly fertile (40-95%). Follicles 7-12 cm; seeds (excl. coma) 2.5 mm. Fl. 6-8. Maritime sands, river banks, in riverside gravel, s.l.-1800m. Described from S.E. Russia. Scattered in Turkey. A1(E) Kirklareli: Iğneada to Hursitaga, s.L, A.Baytop (ISTE 15989). A2(E) Istanbul: Istanbul, Kilyos, 1891, Azn.! A4 Ankara: Kalecik, 680 m, Bornm. 1929: 14373! A8 Çoruh: Artvin to Yusufeli, 1800 m, Stn. & Hend. 6068! Bl lzmir: nr lzmir, Bal. 246! B7 Malatya: Elaziğ, 600 m, /t. Leyd. 1959:1449! C2 Denizli: Pamukkale to Denizli, 230 m, Simon 76-50. C3 Antalya: Antalya, Kayacık 21! C4 lçel: Silifke, Uslu 1971:1001. C10 Hakkari: Zab gorge 48 km S. of Başkale, D. 23837! Black Sea coast of Balkans, S. Russia, Transcaucasia, Iran, Cyprus. E. Medit. element. T. venetum subsp. venetum, differing from the Turkish subspecies by its almost sessile leaves with petiole 1-2 mm (2-6 mm in subsp. sarmatiense), compact, few-flowered 1-8 cm inflorescence (loose, many-flowered, 4-20 cm in subsp. sarmatiense) and ovate (not oblong) corolla lobes, occurs in Italy on the N. Adriatic coast from Trieste to Po di Levante. Some specimens from Turkey-in-Europe approach it; the uniformity of the N. Adriatic population, its apparent sterility (with pollen grains 5-15% fertile), its effective vegetative multiplication and its geographical isolation suggest that it may be a single clone; it may have been accidentally introduced into Venice from the Istanbul region in the Middle Ages during the extensive long-continued commercial intercourse between the two cities. T. venetum, sensu lato, as generally accepted comprises a number of inter-grading taxa distributed from Europe to Japan which have been distinguished in Fl. URSS 18:652-659 (1952) as T. armenum (Pobed.) Pobed., T. lancifolium (Russan.) Pobed., T. sarmatiense Woodson, T. scabrum (Russan.) Pobed., T. russanovii (Pobed.) Pobed. and T. tauricum (Pobed.) Pobed. Specimens corresponding to T. armenum (as T. venetum (L.) Woodson subsp. armenum (Pobed.) Rech. fil. in Fl. Iranica - Apocynaceae 6, 1976) occur in the Flora of Turkey area.