ERIGERON (CONYZA CANADENSIS (= ERIGERON CANADENSIS L.))

	E
	ERIGERON
	*CONYZA CANADENSIS (= ERIGERON CANADENSIS L.)*

Name
ERIGERON

Scientific Name
CONYZA CANADENSIS (= ERIGERON CANADENSIS L.)

ERIGERON

Zarramaga; al.: Kanadisches Berufskraut; ingl.: Canadian (horseweed) fleabane.

Flowery aerial part

The leaves of this annual species, appear in rosettes and pecioladas in the base, they are sésiles in the superior part and very narrow. The inflorescencia, paniculiforme, tightened and oblong, include/understand numerous chapters whose external, liguladas and white flowers, are arranged in several rows.

Origin

Original North America, the plant has known a great expansion. He is frequent to find it in incultos lands, between the rubbish, gardens and sand of the rivers.

Chemical composition

Contains 739 gálicos tannins [ ], o-benzilbenzoico acid [ 740 ], a small amount of essential oil [ 749 ], poliínos and a 741 cumuleno [ ]. Some steroids have been identified: estigmastenol, estigmastadienol and the 742 ketones corresponding [ ], espinasterol, b-sitosterol [ 743 ] and derived similar [ 746 ]. The leaves are rich in flavónico heterósido: escutelarósido, glucurónido of escutelareína (2.5% in the leaves).

Farmacológicos data

The observations indicate that they erigeron stimulates the smooth musculatura (íleon of rabbit) and diminishes the arterial pressure transitorily (dog, 50mg/kg, watery extract, i.p.). The extract is analgesic and antipyretic. The toxicity is low (D.L.50 = 5g/kg) [ 747 ].

Experiments have been made to confirm the properties traditionally attributed to the drug: antidiarreica, antiinflammatory, diurética. The tests of acute and subacute toxicity have demonstrated the absence of toxicity of the drug criomolida of erigeron (3 g/kg, 300 and 600 mg/kg/día, rat, to per you) [ 750 ].

The drug

The leaves caulinares, dispersed or alternating on a stem covered with rough hairs are green pale ash, of linear lanceolada form. The limb, pointed in the end, whole or is partially indented. The brácteas of I involve are linear, overlapped, almost glabras, membranosas in the edges. Liguladas peripheral feminine flowers and hermafroditas flowers tubulosas inserted power stations on a flat and almost naked receiver. The microscopic analysis sample warty foliares hairs, fragments of silky hairs of the vilano and polen tricolporoideo with 748 equinulada exina [ ]. The C.C.F. made with a dye allows a qualitative and fast study of the drug.

Bibliography

[ 739 ] Or Kostecka-madalska and E. Borowczak-niemczewska

Garbniki w Erigeron canadensis L. (The tannines in And c.)

Act Soc. Bot. Pol., 37, 657-664, 1968;

(in Pole, summary in English).

[ 740 ] A.U. RAHMAN and H.S.E. GATICA

Isolation of o-benzilbenzoic acid from Erigeron canadensis L.

Rec. Trav. Chim. Pays-Bas, 88, 1332-1334, 1969.

[ 741 ] F. BOHLMANN and ZDERO

Über ein neues Kumulen aus Erigeron canadensis L.

Tetrahedron Letters, (28), 2465-2466, 1970

[ 742 ] F. SENGUPTA, M. SEN and S. DAS

Chemical investigation of the whole plant of Erigeron canadensis

J. Indian Chem. Soc., 62, 78-79, 1985

[ 743 ] D. GRANCAI, V. SUCHY, M. NAGY, To FODOROVA and J. TOMKO

Obsahove latky Erigeron canadensis L.

Ceskoslov. Farm., 34, 209-211, 1985.

[ 746 ] S. DUBEY and K.C. GUPTA

Sterol composition of leaves of Erigeron canadensis L.

Fitoterapia, 59, 428-429, 1988.

[ 747 ] D.P. SINGH MAURYA, H.S. BAGHA and B.K. SONI

Pharmacological Preliminary studies on Erigeron canadensis Linnaeus.

Ind. J. Pharm., 35, 62-63, 1973.

[ 748 ] R. CANIATO, R. FILIPPINI and E.M. CAPPELLETI

Identification botanique DES drogues végétales pulvérisées.

Conyza canadensis (L.) Cronq. (= Erigeron canadensis L.)

Plant Méd. Phytother., 23, 90-94, 1989.

[ 749 ] B.F. HRUTFIORD, W.H. HATHEWAY and D.B. SMITH

Oil Essentail of Conyza canadensis

Phytochemistry, 27, 1858-1860, 1988.

[ 750 ] Erigeron, toxicológico Dossier of Laboratories

ARKOPHARMA

Diseases in whose treatment this plant is adapted

Drop

U.E.P. Add to Favorite Home Page Recommend this Plant
2008 © HIPERnatural.COM www.hipernatural.com Your Source of Natural Health in Internet