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Cascara

Cascara Picture from Wikimedia Commons

Rhamnus purshianus

Common Name: Cascara Sagrada.

Family: Rhamnaceae.

Known Hazards: There is the suggestion that this species could be mildly poisonous.

Habitats: Rich bottom lands and sides of canyons, usually in coniferous forests.

Range: Western N. America - British Columbia to California.

Physical Characteristics . . . → Read More: Cascara

Oak

Oak Photo by Jorchr http://commons.wikimedia.org/wiki/File:Svaneholm,_ek.jpg

Quercus robur

Common Name: Pedunculate Oak.

Family: Fagaceae.

Habitats: Often the dominant woodland tree, especially on clay soils and in the eastern half of Britain, but avoiding acid peat and shallow limestone soils.

Range: Europe, including Britain, from Scandanavia south and east to Spain, the . . . → Read More: Oak

Wild Cherry

Wild Cherry Bark Photo from http://commons.wikimedia.org/wiki/File:Amerikaanse_vogelkers_bessen_Prunus_serotina.jpg

Prunus serotina

Common Name: Wild Cherry, Rum Cherry.

Family: Rosaceae.

Known Hazards: The seeds and leaves of this species contain high quantities of hydrogen cyanide, a poison that gives almonds their characteristic flavour. This toxin is readily detected by its bitter taste. Usually present . . . → Read More: Wild Cherry

Purslane

Purslane Photo by http://commons.wikimedia.org/wiki/File:Portulaca_oleracea_stems.jpg

Portulaca oleracea

Common Name: Green Purslane.

Family: Portulacaceae.

Habitats: Fields, waste ground, roadside verges, cultivated ground and by the sea.

Range: S. Europe. A not infrequent casual in Britain.

Physical Characteristics

Portulaca oleracea is an ANNUAL growing to 0.3 m (1ft) by 0.3 m . . . → Read More: Purslane

Polygala Tenuifolia

Polygala Tenuifolia

Polygala tenuifolia

Common Name: Yuan Zhi.

Family: Polygalaceae.

Known Hazards: Although no specific mention has been seen for this species, at least one member of this genus is said to be poisonous in large quantities.

Habitats: Hillsides, roadsides and meadows. Dry meadows and stony slopes.

Range: E. Asia . . . → Read More: Polygala Tenuifolia

Senega

Senega drawing from Wikimedia Commons

Polygala senega

Common Name: Senega Snake Root.

Family: Polygalaceae.

Known Hazards: The plant is poisonous in large quantities, causing violent purging and vomiting.

Habitats: Rocky hills and woods on dry and mainly calcareous soils.

Range: Eastern N. America - New Brunswick to Hudson . . . → Read More: Senega