Thladiantha dubia

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Thladiantha dubia
Thladiantha dubia 002 by peganum.jpg

Thladiantha dubia

Systematics
Rosids
Eurosiden I
Order : Pumpkin-like (Cucurbitales)
Family : Pumpkin family (Cucurbitaceae)
Genre : Thladiantha
Type : Thladiantha dubia
Scientific name
Thladiantha dubia
Bunge
illustration

Thladiantha dubia or Knoll cucumber , Quetschgurke even Manchu is a flowering plant in the family Cucurbitaceae from the central China to the Mongolia , the Manchuria and after Korea and Sakhalin and the adjacent East Russia .

description

Thladiantha dubia grows as a perennial , herbaceous , fast-growing and frost-hard climber that forms small tubers with runners . It grows up to 2 meters high and 6 meters wide. The slender, angular shoot axes are soft and more or less long hairy. Simple and slender, hairy tendrils are formed.

The simple leaves are alternate and petiolate. The hairy and thick petiole is up to 4–6 inches long. The broad, egg-shaped, soft, papery leaves are up to 8–15 centimeters long and 9 centimeters wide. They are deeply heart-shaped or arrow-shaped and usually pointed or pointed and on the edge mostly more or less finely toothed or sawn or, more rarely, completely to slightly bulged. The leaf blade is short-bristled on both sides and hackled and hairy as well as scaly. The leaves are clinging like Velcro . The veins impressed on the upper side are radially pinnate along a basal artery following the heart-shaped base of the spreading. The stipules are missing.

Thladiantha dubia is dioecious, dioecious and metagynous; so the male plants flower first, the flowers appear axillary. The female flowers appear solitary, the male solitary or in groups in short, racemose and dense inflorescences, each with bracts . The yellow, bell-shaped and stalked, five-fold, functionally unisexual flowers have a double flower envelope . The softly hairy flower stalk is up to 3.5 centimeters long. The short cup-shaped overgrown calyx with spreading, longer and narrow-elongated, up to 1.3 centimeters long lobes is hairy. The roof-like and longitudinally veined petals are finely glandular with curved, triangular tips. In the male flowers, with horizontal scales at the base; Short stamens are present above the reduced pestle, 4 are fused in pairs and one is free. The female flowers have 5 short staminodes and a subordinate ovary in the soft, long-haired flower cup . The dreiästige stylus is short with two-lobed, kidney-shaped scar .

Up to 4–5 centimeters long, scattered long and soft-haired, red, many-seeded, egg-shaped to ellipsoidal, slightly longitudinally furrowed fruits, berries ( false fruit ) are formed. The many (up to 100) dark brown, up to 4–5 millimeters long, very finely textured seeds in the orange flesh are flattened and ovoid.

  • Female flower

  • Leaf, you can see in the close-up the curved basal artery of the nerve

  • fruit

  • Tubers

use

The tubers and fruits are edible.

literature

  • TG Tutin, VH Heywood u. a .: Flora Europaea. Volume 2, Cambridge Univ. Press, 1968, 2001, ISBN 0-521-06662-X (Reprint), p. 297.
  • D. Yu. Shvets, BR Kuluev: Thladiantha dubia: biology, habitat, distribution area and practical application. In: Доклады Башкирского университета. Том 2, No. 5, 2017, online at academia.edu (Russian).

Web links

Commons : Thladiantha dubia  - collection of images, videos and audio files