학명 : Eryngium yuccifolium Michx.
아래 : 2022.08.23 푸른수목원
추가 사진 2022.10.05 푸른수목원
엉어 위키
Eryngium yuccifolium, known as rattlesnake master, button eryngo, and button snake-root, is a perennial herb of the parsley family native to the tallgrass prairies of central and eastern North America. It grows from Minnesota east to Ohio and south to Texas and Florida, including a few spots in Connecticut, New Jersey, Maryland, and Delaware.
Name
The common name "rattlesnake master" is attributed to early European pioneers erroneously believing the plant to be an antidote for rattlesnake venom based upon Native Americans' various medicinal uses of the plant. The species name yuccifolium "yucca-leaved" was given because its leaves resemble those of yuccas.
Description
The leaves are stiff, long and narrow with a sharp tip, 15–100 cm (0–5 ft) long but only 1–3 cm (0.39–1.18 in) broad. They are bluish-green, and covered in a waxy coating. On the edges are regularly spaced bristles or spines. The root system consists of a central taproot surrounded by thick fleshy fibrous roots.
It grows up to 1.8 m (5.9 ft) tall, with 10–40 dense, ball-shaped umbels of flowers produced at the top of each stem. Each of these condensed umbels is 1–3 cm (0.5–1 in) in diameter, resembling flowerheads. Individual flowers in the umbels are small, 3–4 mm in diameter, with greenish-white or bluish-white petals and a faint honey-like scent. Underneath each flower is a spiny green bract, and underneath each flower cluster is a small star-like rosette of spiny bracts. The flowers are produced in July and August.
After the flowerbuds open, the pollen matures and is released two to three days before the stigmas become receptive.[3] This encourages cross-pollination by making it unlikely that a given flower's pollen will fertilize the stigma of the same flower. Rattlesnake master has unusually high seed set (close to 90%).
Ecology
In remnant natural areas, Eryngium yuccifolium is fairly intolerant of anthropogenic disturbance.[6] It readily establishes when planted in prairie restorations.
The flowers attract many insects, including short and long-tongued bees, flies, beetles, and butterflies, but most numerous of all are wasps. It is a larval host to the rattlesnake-master borer moth (Papaipema eryngii).
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