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Herbs & Plants (Spices)

Lactuca raddeana

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Botanical Name: Lactuca raddeana
Family: Asteraceae
Subfamily: Cichorioideae
Tribes: Cichorieae
Subtribes: Lactucinae
Genus: Lactuca
Species: Lactuca raddeana
Kingdom: Plantae
Order: Asterales

Synonyms: Lactuca aogashimaensis Kitamura; Lactuca elata Hemsley, non Salisbury; Lactuca raddeana var. compacta Baranov & Skvortsov; Pterocypsera elata (Hemsley) C. Shih; Prenanthes hieracifolia H. Léveillé

Common names: (Japanese common name) yama-nigana [meaning: mountain bitter herb])


Habitat :Lactuca raddeana is native to E. Asia – China, Japan. It grows on mountains all over Japan.
Description:
Lactuca raddeana is an annual or perennial herb, growing to 0.6 m (2ft). Roots ramose. Stem solitary, erect, basal half ± densely hispid, apical half glabrous and branched. Lower and middle stem leaves with basal portion cuneate or winged petiole-like, 2–10 cm; apical portion ovate, elliptic, or triangular, 5–16 × 2–8.5 cm, undivided, pinnatipartite, or lyrately pinnatipartite, ± hispid, margin dentate and coarsely sinuate-dentate; lateral lobes 1–3 pairs, elliptic, apex acute; terminal lobe triangular, ovate-triangular, or subrhombic, apex acute. Upper stem leaves with basal portion shorter, winged, and petiole-like to cuneate, apical portion ovate, elliptic, or lanceolate. Synflorescence narrowly paniculate, with numerous capitula on wiry branches. Capitula with 8–11 florets. Involucre cylindric, 8–10 mm at anthesis, 9–11 × 4–5 mm in fruit. Phyllaries often pale purplish red; outer phyllaries triangular-ovate to lanceolate, largest ca. 5 × 1–2 mm, apex obtuse; inner phyllaries 5(or 6), apex obtuse. Florets bright yellow. Achene 3–4 mm; body reddish to dark brown, ellipsoid, compressed, broadly winged, 1.5–2 mm wide, with 3(–5) prominent ribs on either side, apically contracted into a concolorous or apically pale stout 0.2–0.4 mm beak. Pappus 6–7 mm, ± caducous. Fl. and fr. May–Oct. 2n = 18.

CLICK & SEE THE PICTURES :

The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects.Suitable for: light (sandy) and medium (loamy) 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.
Cultivation: Prefers a light sandy loam.

Propagation : Seed – sow spring in situ and only just cover the seed. Germination is usually fairly quick.

Edible Uses: Leaves – raw or cooked. Root.
Medicinal Uses :
Although we have seen no specific reports for this species, most if not all members of the genus have a milky sap that contains the substance ‘lactucarium‘ and can probably be used as the report below details. The whole plant is rich in a milky sap that flows freely from any wounds. This hardens and dries when in contact with the air. The sap contains ‘lactucarium’, which is used in medicine for its anodyne, antispasmodic, digestive, diuretic, hypnotic, narcotic and sedative properties. Lactucarium has the effects of a feeble opium, but without its tendency to cause digestive upsets, nor is it addictive. It is taken internally in the treatment of insomnia, anxiety, neuroses, hyperactivity in children, dry coughs, whooping cough, rheumatic pain etc. Concentrations of lactucarium are low in young plants and most concentrated when the plant comes into flower. It is collected commercially by cutting the heads of the plants and scraping the juice into china vessels several times a day until the plant is exhausted. An infusion of the fresh or dried flowering plant can also be used. The plant should be used with caution, and never without the supervision of a skilled practitioner. Even normal doses can cause drowsiness whilst excess causes restlessness and overdoses can cause death through cardiac paralysis. Some physicians believe that any effects of this medicine are caused by the mind of the patient rather than by the medicine. The sap has also been applied externally in the treatment of warts

Known Hazards: Although no specific mention of toxicity has been seen for this species, many plants in this genus contain a narcotic principle, this is at its most concentrated when the plant begins to flower. This principle has been almost bred out of the cultivated forms of lettuce but is produced when the plant starts to go to seed
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:
https://en.wikipedia.org/wiki/Lettuce
https://species.wikimedia.org/wiki/Lactuca_raddeana
http://cichorieae.e-taxonomy.net/portal/cdm_dataportal/taxon/fb94cf28-3b13-4b16-aa51-065c46c833c0
http://www.pfaf.org/user/Plant.aspx?LatinName=Lactuca+raddeana
http://flowers.la.coocan.jp/Asteraceae/Lactuca%20elata.htm

 

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Herbs & Plants

Prunus mahaleb

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Botanical Name : Prunus mahaleb
Family: Rosaceae
Genus: Prunus
Species: P. mahaleb
Kingdom: Plantae
Order: Rosales

Common Names :Prunus mahaleb, aka mahaleb cherry, aka St Lucie cherry

Habitat :Prunus mahaleb  is native in the Mediterranean region, Iran and parts of central Asia. It is adjudged to be native in northwestern Europe or at  least it is naturalized there.The tree occurs in thickets and open woodland on dry slopes; in central Europe at altitudes up to 1,700 m, and in highlands at  1,200-2,000 m in southern Europe. It has become naturalised in some temperate areas, including Europe north of its native range (north to Great Britain and  Sweden), and locally in Australia and the United States.

Description:
Prunus mahaleb is a deciduous tree or large shrub, growing to 2–10 m (rarely up to 12 m) tall with a trunk up to 40 cm diameter.The tree’s bark is  grey-brown, with conspicuous lenticels on young stems, and shallowly fissured on old trunks. The leaves are 1.5-5 cm long, 1-4 cm. wide, alternate, clustered at the end of alternately arranged twigs, ovate to cordate, pointed, have serrate edges, longitudinal venation and are glabrous and green. The petiole is  5-20 mm, and may or may not have two glands. The flowers are fragrant, pure white, small, 8-20 mm diameter, with an 8-15 mm pedicel; they are arranged 3-10  together on a 3-4 cm long raceme. The flower pollination is mainly by bees. The fruit is a small thin-fleshed cherry-like drupe 8–10 mm in diameter, green at  first, turning red then dark purple to black when mature, with a very bitter flavour; flowering is in mid spring with the fruit ripening in mid to late  summer……....CLICK & SEE THE PICTURES.

Cultivation:  
Thrives in a well-drained moisture-retentive loamy soil, growing best in a poor soil. Prefers some lime in the soil but is likely to become chlorotic if too much lime is present. Succeeds in sun or partial shade though it fruits better in a sunny position. Most members of this genus are shallow-rooted and will produce suckers if the roots are damaged. Plants in this genus are notably susceptible to honey fungus.

Propagation:       
Seed – requires 2 – 3 months cold stratification and is best sown in a cold frame as soon as it is ripe. Sow stored seed in a cold frame as early in the year as possible. Protect the seed from mice etc. The seed can be rather slow, sometimes taking 18 months to germinate. Prick out the seedlings into individual pots when they are large enough to handle. Grow them on in a greenhouse or cold frame for their first winter and plant them out in late spring or early summer of the following year. Cuttings of half-ripe wood with a heel, July/August in a frame. Softwood cuttings from strongly growing plants in spring to early summer in a frame. Layering in spring.

Edible Uses:
The fruit might be edible. The fruits of all members of this genus are more or less edible, may not be always of very good quality. However, if the fruit is bitter it should not be eaten in any quantity due to the presence of toxic compounds. The fruit is about 6mm in diameter and contains one large seed. Seeds are eaten  raw or cooked. The dried seed kernels are used as a flavouring in breads, sweet pastries, confectionery etc. They impart an intriguing flavour. Do not eat the seed if it is too bitter – see the notes above on toxicity.

Medicinal Uses:
The seed is tonic. Although no specific mention has been seen for this species, all members of the genus contain amygdalin and prunasin, substances which break down in water to form hydrocyanic acid (cyanide or prussic acid). In small amounts this exceedingly poisonous compound stimulates respiration, improves digestion and gives a sense of well-being.

Known Hazards:      Although no specific mention has been seen for this species, it belongs to a genus where most, if not all members of the genus produce hydrogen cyanide, a poison that gives almonds their characteristic flavour. This toxin is found mainly in the leaves and seed and is readily detected by its bitter taste. It is usually present in too small a quantity to do any harm but any very bitter seed or fruit should not be eaten. In small quantities, hydrogen cyanide has been shown to stimulate respiration and improve digestion, it is also claimed to be of benefit in the treatment of cancer. In excess, however, it can cause respiratory failure and even death.

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://en.wikipedia.org/wiki/Prunus_mahaleb
http://www.pfaf.org/user/Plant.aspx?LatinName=Prunus+mahaleb