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Dwarf Snapdragon – The Railroad Weed

Published online by Cambridge University Press:  12 June 2017

Robert M. Arnold*
Affiliation:
Dep. Biology, Colgate University, 13 Oak Drive, Hamilton, NY 13346

Extract

Believed native to the Mediterranean region, dwarf snapdragon [Chaenorrhinum minus (L.) Lange ♯ CHNMI] was introduced into North America in the late 19th century. Since its introduction, it has spread, mainly along railroad lines, to at least 30 states as far west as Kansas and Nebraska. Increased use of herbicides by railroad companies has resulted in a marked decrease in its abundance in recent years.

Type
Intriguing World of Weeds
Copyright
Copyright © 1991 Weed Science Society of America 

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References

Literature Cited

1. Arnold, R. M. 1981. Population dynamics and seed dispersal of Chaenorrhinum minus on railroad cinder ballast. Am. Midl. Nat. 106: 8091.Google Scholar
2. Arnold, R. M. 1982. Floral biology of Chaenorrhinum minus (Scrophulariaceae), a self-compatible annual. Am. Midl. Nat. 108: 317324.CrossRefGoogle Scholar
3. Groh, H. 1946. Canadian Weed Survey. 3rd report. Can. Dep. Agric., Ottawa.Google Scholar
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5. Martindale, I. C. 1876. The introduction of foreign plants. Bot. Gaz. (Crawfordsville) 2:5558.Google Scholar
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7. Widrlechner, M. P. 1983. Historical and phenological observations on the spread of Chaenorrhinum minus across North America. Can. J. Bot. 61:179187.Google Scholar