Family |
Hypericaceae
Hypericum tetrapterum
Fries
Hypericum tetrapterum Fr.
First published in Novit. Fl. Svec.: 94 (1823), nom. cons.
(Nouvelle Flore du Liban et de la Syrie, vol. 2, pp. 526–527, Pl. CCXXVII, 3; 1970)
Description
Life-form & habit: Hairless perennial, 20–40 cm tall, producing runners at the base. Yellowish stems have four strongly raised, nearly wing-like ridges.
Leaves: Ovate-oblong, heart-shaped and stem-clasping at the base, with prominent veins and both translucent and black dots.
Inflorescence & flowers: Leafy, branching clusters form a nearly flat-topped inflorescence. The calyx is deeply divided into pointed, linear, entire, non-glandular sepals. The pale-yellow corolla is about twice as long as the calyx.
Fruit: Ovate capsule with a short point and short styles.
Flowering and habitat
Phenology: Flowering June–October.
Habitat & elevation: Stream and ditch margins.
Distribution
Lebanese distribution: Saida, Beirut, Nahr Beirut, Antelias, Tripoli, Jbaa, Sir ed Denniye, Broummana, Bikfaya, Choueir, Hasroun, Ehden forest, below Beqaa Kafra, Taanayel, Zahle, Mouallaqa and Sannine.
Syrian distribution: Homs, Hama, Doummar, Hame and Banias.
Native range: Albania, Algeria, Austria, Belarus, Belgium, Bulgaria, Corse, Czechia-Slovakia, Denmark, East Aegean Is., France, Germany, Great Britain, Greece, Iran, Iraq, Ireland, Italy, Kriti, Lebanon-Syria, Libya, Morocco, Netherlands, North Caucasus, NW. Balkan Pen., Palestine, Poland, Romania, Sardegna, Sicilia, Spain, Sweden, Switzerland, Transcaucasus, Türkiye, Türkiye-in-Europe, Ukraine.
Introduced into: New Zealand North, New Zealand South, Tasmania.