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Vascular Flora Of Powhatan County, Virginia, Michael Austin Terry, W. John Hayden
Vascular Flora Of Powhatan County, Virginia, Michael Austin Terry, W. John Hayden
Biology Faculty Publications
Powhatan County is a largely rural county of the Virginia piedmont currently experiencing exurban development pressure. Commercial pine forests occupy much of the land area; most natural vegetation occurs in various hardwood forests. Plant life is supported largely by soils derived from Proterozoic to Paleozoic metamorphic and igneous rocks, soils developed over Triassic basins, and riparian soils associated with the James and Appomattox Rivers. The annotated checklist is based on new collections gathered between September 2003 and August 2005, supplemented with records from regional herbaria and the Atlas of the Virginia Flora. Field work sampled at least 12 distinct community …
Atamasco Lily, Zephyranthes Atamasca, W. John Hayden
Atamasco Lily, Zephyranthes Atamasca, W. John Hayden
Biology Faculty Publications
Simple and pure, Atamasco lilies were among the first of many beautiful wildflowers to be noticed by the Jamestown colonists as they explored the tidewater region of southeastern Virginia. A perennial herb that grows from a subterranean bulb, the leaves are glossy green, linear, flat to somewhat concave, up to one half inch wide and approximately one foot in length. The species name, atamasca, is attributed to Tapehanek words meaning under grass, in reference to the location of the bulb under grass-like leaves. Overall the plant is rather grass-like. Flowers are erect to slightly inclined. As in many lilies, …
Green Mulch From Invasives Offers Many Benefits, W. John Hayden
Green Mulch From Invasives Offers Many Benefits, W. John Hayden
Biology Faculty Publications
For the past several years, I’ve been clipping leafy branchlets of autumn olive for direct use as green mulch in my vegetable garden. In essence, I clip the shoots into segments ranging from 4 to 10 inches long, gathering the freshly chopped mulch into a wheelbarrow. I like to emphasize the youngest and leafiest stems, but since I am also interested in reducing the exotic plant’s biomass, I also clip woody stems up to a half inch in diameter. I then place the coarse mulch, leaves, young stems, and chopped woody branchlets, around my vegetable plants. I install the fresh …
Zephyr Lilies: Simple Beauty Belies Complex Biology, W. John Hayden
Zephyr Lilies: Simple Beauty Belies Complex Biology, W. John Hayden
Biology Faculty Publications
It is often thus, the best in art appears effortless; the most compelling science, once understood, seems obvious. But talk at length with any artist or scientist and you will learn that what appears simple is actually the culmination of a great deal of work. Zephyr, or Jamestown, lilies are like that, too. These seemingly simple flowers are merely the elegant end product of some very complex underlying biology, the details of which are imperfectly understood.
Are Hawkmoths The Mysterious Pollinators Of The Jamestown Lily?, W. John Hayden
Are Hawkmoths The Mysterious Pollinators Of The Jamestown Lily?, W. John Hayden
Biology Faculty Publications
“Hawkmoth flowers are easy to predict but difficult to document,” noted botanist Verne Grant in his comprehensive review of hawkmoth pollination systems in North America (Botanical Gazette 144: 439-449. 1983). Grant included Jamestown (atamasco) lilies (among other zephyr lily species) as examples of plants that are probably hawkmoth- pollinated, but for which the actual pollination mechanism remains undocumented.
2007 Wildflower Of The Year: Atamasco Lily, Zephyranthes Atamasca, W. John Hayden
2007 Wildflower Of The Year: Atamasco Lily, Zephyranthes Atamasca, W. John Hayden
Biology Faculty Publications
Atamasco lily is a perennial herb that grows from a subterranean bulb. The bulb is dark, with a short neck and papery tunic formed by remnants of old leaf bases. Leaves are glossy green, linear, flat to somewhat concave, up to one half inch wide, approximately one foot in length and, overall, rather grasslike. When not in flower the plants can be easily overlooked. Flowering stems are leafless scapes that are about as long as the leaves. In crosssection the scapes are hollow. Each scape terminates in a single flower. A few papery bracts subtend the flower stalk where it …