Ranunculus pennsylvanicus

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Ranunculus pennsylvanicus
Ranunculus pennsylvanicus.jpg
Light:Full Sun Part Shade
Moisture:Mesic Hydric
Soil pH:5.6-8.4
Height:3'
Native to:
Edible Rating:PFAF Edibility Rating
Medicinal Rating:PFAF Medicinal Rating
Tea:Yes
Poisonous

Ranunculus pennsylvanicus (common name: pennsylvania buttercup) is a forb with yellow flowers that prefers moist loamy soil[1] and grows in meadows, alluvium, and ditches[2] across Canada and Alaska and as far south as Colorado. The leaves are edible as a famine food when cooked to remove a heat sensitive toxin.[3][4][5][6][7][8][9]

Juice from this plant is strongly acrid and is a rubefacient[10] that is used to raise blisters.[10]

Propagation: Seed - sow spring in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in the summer.

A greedy plant, inhibiting the growth of nearby plants, especially legumes[11].

Usage: The entire plant can be boiled to yield a red dye[12]. It is mixed with the bark of bur oak to set the color.[12]

The entire plant can be boiled with rushes (Juncus spp) or flags (Iris spp and Acorus calamus) to colour them yellow for use in making mats, baskets etc[12].

Pollinators: Insects

Flower Type: Hermaphrodite

Links

References

  1. Chittendon, Fred. RHS Dictionary of Plants. Oxford University Press, 1951.
  2. Lyndon, Merritt. Gray's Manual of Botany. American Book Co, 1950.
  3. Read, Bernard. Famine Foods Listed in the Chiu Huang Pen Ts'ao. Taipei Southern Materials Centre, 1977.
  4. Grieve, Margaret. A Modern Herbal. Penguin, 1984.
  5. Altmann, Horst. Poisonous Plants and Animals. Chatto and Windus, 1980.
  6. Triska, Jan. Encyclopaedia of Plants. Hamlyn, 1975.
  7. Stary, Frantisek. Poisonous Plants. Hamlyn, 1983.
  8. Elias, Thomas. A Field Guide to North American Edible Wild Plants. Van Nostrand Reinhold, 1982.
  9. Frohne, Dietrich and Hans Pfänder. J. A Colour Atlas of Poisonous Plants. Timber Press, 1984.
  10. 10.0 10.1 Chopra, R. Glossary of Indian Medicinal Plants. Council of Scientific and Industrial Research, New Delhi, 1986.
  11. Hatfield, Audrey. How to Enjoy your Weeds. Frederick Muller Ltd, 1974.
  12. 12.0 12.1 12.2 Moerman, Daniel. Native American Ethnobotany. Timber Press, 1998.