Tordylium apulum, commonly known as the Mediterranean Hartwort, is an annual forb or herb. It is classified within the family Apiaceae, the carrot family. It is located in a range from Europe to west Asia, but was introduced to the United States. It is now found only in Arizona.
The Mediterranean Hartwort usually grows to 20-50 centimeters in height. It has an erect stem that is branched with soft, spreading hairs at the base, and scattered hairs along the rest of the stem. The leaves are softly hairy and pinnate, with the lower leaves being oval with toothed segments, and the upper leaves having linear segments. It has 2-8 primary rays. The marginal flowers each have 1 white petal, enlarged, and uniformly deeply 2-lobed. The bracts and bracteoles are linear long-pointed with spreading hairs. The fruit is orbicular and flattened, and usually is 5-8 millimeters in size.
The Hartwort is located in cultivated beds, waste land, and waysides. The plant prefers sandy, loamy and clay soils. Hartworts also prefer acid, neutral and basic soils. It cannot grow in the shade. The flowers are hermaphrodite and are pollinated by Insects. The plant is self-fertile.
Source: en.wikipedia.org/wiki/Tordylium_apulum - 10.12.2009
In this optical enlargement the seed stands of this Mediterranean Hartwort look like antiquated goodies.