Ferry, James F. Department of Biology, Madison College, Harrisonburg, Virginia.
- Links to Primary Literature
- Additional Readings
A deciduous tree and shrub of the genus Salix, order Salicales, which is common along streams and in wet places in the United States, Europe, and China. Willow twigs are often yellow-green and bear alternate leaves, which are characteristically long, narrow, and pointed; in addition, the leaves usually have fine teeth along the margins (Fig. 1). Flowers occur in catkins. The staminate flowers consist of one to twelve (usually two) stamens, with one or two nectar glands, whereas the pistillate flowers have a single ovary of two carpels, with one to four small glands. The fruit contains several silky seeds. Willow species are wind- or insect-pollinated and hybridize freely, which often makes identification difficult. See also: Flower; Pollination; Salicales; Tree
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 9000 highly qualified scientists and 43 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information