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Lactuca sativa angustana - L.H.Bailey.
                 
Common Name Celtuce
Family Asteraceae or Compositae
USDA hardiness 5-9
Known Hazards The mature plant is mildly toxic[13].
Habitats Not known in the wild.
Range Of garden origin, it is probably derived from L. serriola.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Fully Hardy Moist Soil Semi-shade Full sun

Summary

Lactuca sativa angustana Celtuce


Lactuca sativa angustana Celtuce
   
Physical Characteristics
 icon of manicon of flower
Lactuca sativa angustana is a ANNUAL/BIENNIAL growing to 0.6 m (2ft).
It is hardy to zone (UK) 6 and is not frost tender. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Flies, self.The plant is self-fertile.
Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Synonyms
L. sativa asparagina. (correct name?)

Habitats
 Cultivated Beds;
Edible Uses
Edible Parts: Leaves;  Stem.
Edible Uses:

Leaves - raw or cooked[33, 183]. A mild, slightly sweet flavour, they are rather more coarse than ordinary lettuce[206], though they make an acceptable ingredient in mixed salads. Old leaves become coarser and bitter[206]. Stem - raw or cooked. Thick, tender, crisp and juicy, its flavour is variously described as being like lettuce, celery, artichoke, squash, asparagus or chard[33, 183]. It is usually peeled before being used[183, 206]. The stems can be harvested just before the plants flower without them turning bitter, though they might become hollow at this stage[206].
Medicinal Uses


Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Anodyne;  Antispasmodic;  Emollient;  Expectorant;  Parasiticide;  Sedative.

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[4]. The sap contains 'lactucarium', which is used in medicine for its anodyne, antispasmodic, digestive, diuretic, hypnotic, narcotic and sedative properties[9, 21, 46, 165, 192, 213, 238]. Lactucarium has the effects of a feeble opium, but without its tendency to cause digestive upsets[4], nor is it addictive[7]. It is taken internally in the treatment of insomnia, anxiety, neuroses, hyperactivity in children, dry coughs, whooping cough, rheumatic pain etc[238]. Concentrations of lactucarium are low in young plants and most concentrated when the plant comes into flower[238]. 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[4]. The cultivated lettuce does not contain as much lactucarium as the wild species, most being produced when the plant is in flower[4]. An infusion of the fresh or dried flowering plant can also be used[9]. 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[238] and overdoses can cause death through cardiac paralysis[7, 9]. Some physicians believe that any effects of this medicine are caused by the mind of the patient rather than by the medicine[213]. The sap has also been applied externally in the treatment of warts[222]. The seed is anodyne and galactogogue[218]. Lettuce has acquired a folk reputation as an anaphrodisiac, anodyne, carminative, diuretic, emollient, febrifuge, hypoglycaemic, hypnotic, narcotic, parasiticide and sedative[218].
Other Uses
Parasiticide.

Parasiticide[178]. No further details are given, but it is probably the sap of flowering plants that is used. The seed is said to be used to make hair grow on scar tissue[218].
Cultivation details
Prefers a light sandy loam[1]. Succeeds in most well-drained, humus-rich soils but dislikes acid conditions[1, 16]. Prefers some shade in the summer to slow down the plants tendency to go to seed and to prevent the leaves becoming bitter[18, 20]. Plants can resist some frost, they can also tolerate temperatures in excess of 27°c[206]. They are fairly resistant to bolting, though they can run to seed prematurely in very hot conditions[206]. The celtuce is a form of lettuce with a longer and thicker central stem, it is sometimes cultivated for its edible leaves and stems[206]. There are some named varieties[183]. It takes 3 - 4 months from sowing before the stems are ready to harvest[206]. A surface-rooting plant, the roots can be damaged by hoeing[206]. A good companion for strawberries, carrots, radishes and onions[18, 20].
Propagation
Seed - sow March to June in situ[206]. Seedlings can be transplanted[206]. Seed becomes dormant at temperatures above 27°c[206].

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Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status
IUCN Red List of Threatened Plants Status :
Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Lactuca biennisTall Blue Lettuce01
Lactuca canadensisCanada Lettuce23
Lactuca capensis 12
Lactuca debilis 32
Lactuca formosana 12
Lactuca indicaIndian Lettuce32
Lactuca indica dracoglossa 22
Lactuca indica laciniata 32
Lactuca ludovicianaWestern Wild Lettuce, Biannual lettuce22
Lactuca perennisPerennial Lettuce32
Lactuca pulchellaBlue Lettuce22
Lactuca quercinaWild Lettuce23
Lactuca raddeana 22
Lactuca sativaLettuce, Garden lettuce33
Lactuca sativa capitataCabbage Lettuce33
Lactuca sativa crispaCutting Lettuce33
Lactuca sativa longifoliaCos Lettuce33
Lactuca serriolaPrickly Lettuce23
Lactuca sibiricaPrickly lettuce22
Lactuca triangulata 12
Lactuca virosaWild Lettuce, Bitter lettuce13
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Expert comment
 
Author
L.H.Bailey.
Botanical References
200
Links / References
For a list of references used on this page please go here
Readers comment
 
Elizabeth H.
Mr.R.B.Patil Wed Oct 27 07:47:21 2004
Actually I want to see the references concern about Lactuca sativa. Can you provide me some latest references? My address: Mr. Rahul B. Patil Kusum Residency, flt.no.5, Rukmininagar,KOLHAPUR Maharashtra, INDIA. My E-mail: shrirahul_cricket@indiatimes.com Thank you

Link: www.google.com Excellent information about herbs

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Subject : Lactuca sativa angustana  

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