Lathyrus tuberosus L.

L. tuberosus L., Sp. PL ed. 1 (1753) 732; Hayek, Prodr. Fl. Penins. Balc. I (1926) 816; Ball, FL Eur. II (1968) 140 — Грудково секирче

Fam:   Leguminose Juss. (Fabaceae)
Genus:   Lathyrus L.
Species:Lathyrus tuberosus L.
English Name: Tuberous pea, Tuberous vetchling, Earthnut pea, or Aardaker


Perennials. Rhizome tuber-like, vertically. Stems single or several (30.0) 50.0 - 100.0 (120.0) cm tall, erect, ascending or semi lieing, slender, branched, four edge, without wings, naked. Stipule 5.0 - 10.0 (15.0) mm long and 1.0 - 4.0 mm wide, equal in length to the petiole or slightly shorter, much shorter than the sheets, narrowly lanceolate or linear lanceolate, semi sagittate. Leaf axis with tendril equal to the leaves, branched or unbranched. Sheets are a couple, (1.0) 1.5 - 3.0 (4.0) cm long and (3.0) 4.0 - 10.0 (12.0) mm wide, lanceolate, lance elliptical, covered with mesh veins,
On the top short glochidiate, naked. Sheets 3 - 4 times longer than the handle, without wings. Inflorescences handle 2 - 3 times longer than the leaf at the inflorescence, goals. Bracts 2 - 3 times shorter than the blossom handles, styliform. Blossom handles equal in length of the calyx or longer, naked. Blossomrs (2) 3 - 7 (9), (10.0) 11.0 -15.0 (16) mm long. Calyx 3 - 5 times shorter than corolla, with 5 protruding makes several obscure anastomosed veins, naked. Tube wide bell-like, teeth shorter than tube of the calyx, or equal to it, more or less unequal to each other, the upper triangular lanceolate, lower lanceolate, a ciliary edge glandular. Corolla light red to purple or blue. Flag (10.0) 11.0 - 13.0 (14.0) mm long and (13.0) 14.0 - 15.0 (16.0) mm wide, nearly round, at the base with short almost triangular claw, the top incised. Wings shorter than the flag, lamina semicircular, 2 times longer than the tapered slightly curved claw, tongue 2 - 3 times shorter than the nail. Keel 10.0 - 12.0 mm long and 4.0 - 5.0 mm wide, equal to wings or slightly shorter than them, at the top tapering slightly to almost stupid, short wide nail at the base. Beans 2.0 - 4.0 cm long and 4.0 - 7.0 mm wide, linear, at the base gradually narrowed, black brown, goal, with a network of veins. Seeds 3 - 6, oval, brown, smooth or rough fine; scar 1/3 the circumference of the seed, issued  triangular

Economic significance. Good forage plant - as meadows and pasture component. The tubers are accepted willingly by all pets.
From: „Флора на НР България”, том VI, БАН, София, (1976)
*   *   *

Lathyrus tuberosus, also known as the tuberous pea, tuberous vetchling,[1] earthnut pea, or aardaker, is a small, climbing perennial plant, native in moist temperate parts of Europe and Western Asia. The plant is a trailer or weak climber, supported by tendrils, growing to 1.2 m tall. The leaves are pinnate, with two leaflets and a branched twining tendril at the apex of the petiole. Its flowers are hermaphroditic, pollinated by bees. The plants can also spread vegetatively from the root system.
Lathyrus tuberosus is a perennial plant with edible tubers 3 to 5 cm (1.2 to 2.0 in) long attached to its roots. The stem grows to 30 to 80 cm (12 to 31 in) and is sprawling, wingless and nearly hairless. The leaves are alternate with short stalks and narrow stipules. The leaf blades are pinnate with a single pair of broad lanceolate leaflets with blunt tips, entire margins and a terminal tendril. The inflorescence has a long stem and two to seven pinkish-red flowers, each 12 to 20 mm (0.5 to 0.8 in) long. These have five sepals and five petals and are irregular, with a standard, two wings and a fused keel. There are ten stamens and a single carpel. The fruit is a flat brown pod containing up to six seeds. This plant flowers in July and August.[2]
Distribution and habitat
Lathyrus tuberosus is native to Europe and parts of western Asia. Its typical habitat is rough grassy places, broad-leaved woodland, forest margins, hedgerows and banks.[2]
From Wikipedia, the free encyclopedia

Flowering Time: Blooms: VI - VIII, fruitful: VII - IX.

References:„Флора на НР България”, том VI, БАН, София, (1976), Wikipedia, the free encyclopedia

Distribution in Bulgaria: In dry grassy places in the plains, foothills and mountains, near the plow land, crops and roads as weed plant and darnel. Widespread to 1000 m altitude. (Conspectus of the Bulgarian Vascular Flora) = conspectus&gs_l= Zlc.

Distribution: Europe, the Caucasus, Southwest and Central Asia, Siberia, North Africa.

Conservation status and threats: not protected species in Bulgaria by the Biodiversity Law. Законодателство на Република България: Закон за биологичното разнообразие

Medical plant: yes, it is -

. 1. 2. 3. 4. 5. 6.

E-mail:                                                                                                                  © K.Nanev   


Copy right: K. Nanev© 2012. All rights reserved