Agoseris glauca - Mountain Dandelion

Famille: Compositae, Genre: Agoseris
Vivace (0.6m de haut).

Habitat

Exposition
Plein soleil
Humidité
Sol sec à moyen.
Sol
Lm. Nécessite un sol drainant. Tolère les sols pauvres.
pH
Sol acide ou calcaire
Habitat originel
Meadows and other open places at all elevations[60] in moderately dry to moist or even wet soils[212].
Origine géographique
Western N. America - British Columbia to Manitoba, south to California and New Mexico.

Comestibilité

  • The solidified sap (latex) of the stem is chewed as a gum [61, 161, 177, 212, 257].

Usages médicinaux

  • The following reports refer to the sub-species A. glauca dasycephala (Torr.&Gray.)Jepson .
  • An infusion of the entire plant is used as a wash for sores and rashes [257].
  • The milky latex is applied to warts in order to remove them [257].
  • This requires constant applications over a period of weeks for it to be effective [K].
  • A poultice made from the latex is applied to sores [257].
  • An infusion of the root is used as a laxative [257].

Autres usages

  • A latex in the plant contains rubber, but not in sufficient quantities to make it commercially valuable [212].

Culture

  • Prefers full sun and a sandy or gravelly loam low in nutrients [1, 200].
  • The sub-species A. glauca villosa is used for its gum [177].

Propagation

  • Graines - semez au printemps sous serre .
  • The seed usually germinates in 2 - 6 weeks at 15°c [133].
  • As soon as the seedlings are large enough to handle, prick them out into individual pots and plant them out in the summer or late in the following spring .
  • Division with care in spring [200].
  • The plants do not like a lot of root disturbance so it is best to pot up the divisions and keep them in a cold frame or greenhouse until they are established .

Calendrier

En fleur
5 - 6
Maturité des graines
6 - 8

Pollinisation

Type de fleur
Hermaphrodite (les fleurs ont des organes mâles et femelles)
Auto-fertile
Non
Pollinisateurs
Insectes

Divers

Pollution
Non
Autres réferences
[60, 200]

Réferences

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 1951.
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).
[60] Hitchcock. C. L. Vascular Plants of the Pacific Northwest. 1955.
A standard flora for Western N. America with lots of information on habitat etc. Five large volumes, it is not for the casual reader.
[61] Usher. G. A Dictionary of Plants Used by Man. 1974.
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.
[133] Rice. G. (Editor) Growing from Seed. Volume 1. 1987.
Very readable magazine with lots of information on propagation.
[161] Yanovsky. E. Food Plants of the N. American Indians. Publication no. 237.
A comprehensive but very terse guide. Not for the casual reader.
[177] Kunkel. G. Plants for Human Consumption. 1984.
An excellent book for the dedicated. A comprehensive listing of latin names with a brief list of edible parts.
[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. 1992.
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
[212] Craighead. J., Craighead. F. and Davis. R. A Field Guide to Rocky Mountain Wildflowers 1963.
Excellent little pocket guide to the area, covering 590 species and often giving details of their uses.
[257] Moerman. D. Native American Ethnobotany 1998.
Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.

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