Sonchus araraticus Naz. et Bars
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Sow thistle
Sow thistle (less commonly hare thistle or hare lettuce) is the common name for a number of related annual herbs in the Genus Sonchus, the ancient Greek name for these plants. All are characterized by soft, somewhat irregularly lobed leaves that clasp the stem and, at least initially, form a basal rosette. The stem contains a milky sap. Flower heads are yellow and range in size from half to one inch in diameter; the florets are all of ray type. Sow thistles are common roadside plants, and while native to Eurasia and tropical Africa, they are found almost worldwide in temperate regions. Despite their common name, sow thistles are not true thistles, although are classified in the same family, the Asteraceae.
Mature sow thistle stems can range from 30 cm to 2 m (1 to 6 feet) tall, depending upon species and growing conditions. Colourations range from green to purple in older plants. Sow thistles exude a milky latex when any part of the plant is cut or damaged, and it is from this fact that the plants obtained the common name, "sow thistle", as they were fed to lactating sows in the belief that milk production would increase. In some regions sow thistles are known as "milk thistles", although a true milk thistle is placed in a different genus.
The plant has been use as a stockfeed and particularly as a feed for rabbits, hence the other common names of "hare thistle" or "hare lettuce". The plant is also edible by humans as a leaf vegetable; old leaves and stalks can be bitter, but young leaves have a flavour similar to lettuce. Going by the name puha it is frequently eaten in New Zealand as a vegetable, particularly by the native Māori. When cooked it tastes similar to chard.
In many areas sow thistles are considered a noxious weed, as they grow quickly in a wide range of conditions, and their wind-bourne seeds allow them to spread rapidly. Sonchus arvensis, the perennial sow thistle, is considered the most economically detrimental, as it can crowd commercial crops, is a heavy consumer of nitrogen in soils, and can regrow and sprout additional plants from its creeping roots.
However despite their status as a weed, sow thistles are easily uprooted by hand, and their soft stems present little resistance to slashing or mowing. Most livestock will readily devour sow thistle in preference to grass.
Sow thistles are a common host plant for aphids. Gardeners may consider this a benefit or a curse; aphids may spread from sow thistle to other plants, but alternatively the sow thistle can encourage the growth of beneficial predators such as hoverflies. In this regard sow thistles make excellent sacrificial plants.
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Plant in Armenia
Իշամառոլ արարատյան (“Ishamarol araratyan”)
Status
There is one population known in Armenia, which is under danger and can easily disappear.
Habitat in Armenia
Grows in pools in Ararat Marz.
Habitat and ecology
Grows in salty pools (about 100 hectares), on the height of 850 meters above sea level.
Biology and potential value
The plant is 1.5 – 2.3 meters high. Has huge scientific value.
Measures of protection
Reserves in the territory of the whole natural habitat should be established.