Apocynum cannabinum (Dogbane, Amy Root, Hemp Dogbane, Indian hemp, Rheumatism Root, or Wild Cotton) is a perennial herbaceous plant that grows throughout much of North America, in the southern half of Canada and throughout the United States. It grows up to 2 meters tall. It prefers moist places. It is a poisonous plant; the name means "poisonous to dogs". All parts of the plant are poisonous and can cause cardiac arrest if ingested.
The stems are reddish and contain a milky latex capable of causing skin blisters. The leaves are opposite, simple broad lanceolate, 7-15 cm long and 3-5 cm broad, entire, and smooth on top with white hairs on the underside. The flowers are produced in mid summer, with large sepals, and a five-lobed white corolla.
It grows in open wooded areas, ditches, and hillsides; in gardens it can be invasive, growing from spreading roots. When growing among corn, Apocynum cannabinum can reduce yields by up to 10% and when growing among soybeans, by up to 40%. It can be controlled through mechanical means, although it is difficult to control with herbicides.
DIRECT AND INDIRECT SOMATIC EMBRYOGENESIS ON COTYLEDON EXPLANTS OF QUASSIA AMARA L., AN ANTILEUKAEMIC DRUG PLANT
Jan 01, 2005; SUMMARY In vitro propagation of Quassia amara L. (Simaroubaceae) was attempted using mature and juvenile explants. Attempts to...