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Lactuca debilis

Botanical Name: Lactuca debilis
Family: Asteraceae
Tribe: Cichorieae
Genus: Lactuca/Ixeris
Class :Magnoliopsida
Kingdom: Plantae
Order: Asterales

Synonyms:
*Chondrilla debilis (Thunb.) Poir.
*Prenanthes debilis Thunb. ex Murray
*Youngia debilis (Thunb.) DC.

Common Names: ShaTanKuMaiCai (Chinese)

Habitat:Lactuca debilis is native to E. Asia – Japan, Korea.(Distribution: Heilongjiang, Jilin, Liaoning, Zhejiang, Fujian, Henan, Guangdong) It grows in the cultivated fields and waste ground in lowlands all over Japan.

Description:
Lactuca debilis is a perennial herb growing to 0.2 m (0ft 8in) by 0.5 m (1ft 8in). The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects.Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

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Cultivation:
We have very little information on this species and do not know if it will be hardy in this country, though judging by its native range it should succeed outdoors in many parts of the country. We suggest growing it in a sunny position and a well-drained soil.

Propagation :
Seed – we have no information on this species but suggest sowing the seed in a cold frame in spring and only just covering the seed. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Division can be tried in spring or autumn.

Edible Uses: Young plant – cooked

Disclaimer : The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplement, it is always advisable to consult with your own health care provider.

Resources:
http://www.catalogueoflife.org/col/details/species/id/7cf42c4435ead3c7f10126700ea8fbbf/synonym/4c5e1ce197569dd01df2de2365c372cc
http://base.sp2000.cn/colchina_e15/show_species_details.php?name_code=d42d47c8-8b3d-4898-bc07-ca1d6ac74bf4
http://www.pfaf.org/user/Plant.aspx?LatinName=Lactuca+debilis

Lactuca biennis

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Botanical Name: Lactuca biennis
Family: Asteraceae
Tribe: Cichorieae
Genus: Lactuca
Species: L. biennis
Kingdom: Plantae
Order: Asterales

Synonymy:
*Sonchus biennis Moench 1794
*Agathyrsus floridanus D.Don
*Agathyrsus leucophaeus Beck
*Cicerbita leucophaea Wallr.
*Cicerbita spicata (Lam.) Beauverd
*Galathenium multiflorum (DC.) Nutt.
*Lactuca leucophaea A.Gray
*Lactuca spicata (Lam.) Kuntze
*Lactuca spicata Hitchc.
*Lactuca terrae-novae Fernald
*Mulgedium leucophaeum DC.
*Mulgedium spicatum (Lam.) Small
*Sonchus leucophaeus Willd.
*Sonchus spicatus Lam.

Common Names: Tall blue lettuce and Blue wood lettuce.

Habitat:Lactuca biennis is native to Eastern N. America. It is widespread across much of the United States and Canada from Alaska and Yukon south as far as California, New Mexico, and Georgia. It grows on damp thickets.

Description:
Lactuca biennis is a biennial herb in the dandelion tribe within the daisy family growing from a taproot to heights anywhere from one half to four meters (20 inches to over 13 feet). There are deeply lobed, toothed leaves all along the stem. The top of the stem bears a multibranched inflorescence with many flower heads. Each head is just over a centimeter (0.4 inches) wide and has many whitish to light blue ray florets but no disc florets. The fruit is a mottled achene about half a centimeter (0.2 inches) long with a brownish pappus.

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The flowers are hermaphrodite (have both male and female organs)Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.
Medicinal Uses:
The root is analgesic, antiemetic and haemostatic. A decoction has been used in the treatment of body pain, but not pain in the limbs. The decoction has also been used in the treatment of haemorrhages, heart troubles, diarrhoea and vomiting.

Resources:
https://en.wikipedia.org/wiki/Lactuca_biennis
http://www.pfaf.org/user/Plant.aspx?LatinName=Lactuca+biennis

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