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Rumex tuberosus subsp. tuberosus Linnaeus, 1762

Rumex tuberosus-Moni Ypsilou1.JPG <b><i>Polygonum bistorta</i> subsp. <i>carneum</b></i> (Koch) Coode et Cullen||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/08/06/20170806232951-6e0824df-th.jpg>Thumbnails<b><i>Rumex tuberosus</b> </i>subsp. <i><b>tuberosus</i></b> Linnaeus, 1762||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/06/22/20170622225141-db18db43-th.jpg><b><i>Polygonum bistorta</i> subsp. <i>carneum</b></i> (Koch) Coode et Cullen||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/08/06/20170806232951-6e0824df-th.jpg>Thumbnails<b><i>Rumex tuberosus</b> </i>subsp. <i><b>tuberosus</i></b> Linnaeus, 1762||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/06/22/20170622225141-db18db43-th.jpg><b><i>Polygonum bistorta</i> subsp. <i>carneum</b></i> (Koch) Coode et Cullen||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/08/06/20170806232951-6e0824df-th.jpg>Thumbnails<b><i>Rumex tuberosus</b> </i>subsp. <i><b>tuberosus</i></b> Linnaeus, 1762||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/06/22/20170622225141-db18db43-th.jpg><b><i>Polygonum bistorta</i> subsp. <i>carneum</b></i> (Koch) Coode et Cullen||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/08/06/20170806232951-6e0824df-th.jpg>Thumbnails<b><i>Rumex tuberosus</b> </i>subsp. <i><b>tuberosus</i></b> Linnaeus, 1762||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/06/22/20170622225141-db18db43-th.jpg>

Rumex tuberosus subsp. tuberosus Linnaeus, 1762
Common names: Tuberous dock [En], Oseille tubéreuse, Patience tubéreuse [Fr], Λάπαθον το κονδυλόρριζον [Gr], Kuzukıkırdağı [Tu]

Moni Ypsilou, LESVOS ● Greece

Description: Perennial plant, with at least some of the roots tuberous.
The stems are arcuate-ascending to erect, 10-60 cm hight.
The lower leaves are sagittate, acute or obtuse; the stem leaves sagittate, usually acute.
The inner perianth segments are ± cordate-orbicular, 3-8 mm in diameter, much larger than the nut, tuberculate with small, backwardly directed tubercles. The outer perianth segments are reflexed in fruit.

Its is a polymorphic species in which a number of subspecies are recognised including:
R. t. subsp. creticus – Stems numerous, short, ascending; basal leaves very obtuse
R. t. subsp. contractus – Stems usually single, tall, erect; basal leaves usually acute, inflorescence contracted; inner perianth segments c. 8 mm broad.
R. t. subsp. tuberosus – Stems usually single, tall, erect; basal leaves usually acute; inflorescence not contracted; inner perianth segments 3-5 mm broad; inflorescence branches curving erect, themselves unbranched.
R. t. subsp. horizontalis – Stems usually single, tall, erect; basal leaves usually acute; inflorescence not contracted; inner perianth segments 3-5 mm broad, inflorescence branches straight, spreading, themselves branched.

Biology: Flowering from April to July.

Habitat: stony places, road sides.

Distribution: South and Centre Europe, North Western Africa, Cyprus, South Russia, Caucasia, Syrian Desert, Iran and Turkestan.

References:
Türkiye Bitkileri, Plants of Turkey, Rumex tuberus




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