Gall-Of-The-Earth
Nabalus trifoliolatus Cass.

Nabalus trifoliolatus, known as Gall-Of-The-Earth or three-leaved rattlesnake root, is a perennial flowering plant in the Asteraceae family. Native to eastern Canada and the eastern United States, it is characterized by its tall, erect stems, palmately lobed leaves, and pale yellow flowers. The species is notable for its distinct morphological features, including angular leaf lobes and dark green, glabrous involucral bracts. It is found in a wide range of habitats, from alpine regions to lowland forests, and is recognized for its ecological and ornamental value.
Description
Nabalus trifoliolatus is a tall perennial herb that can grow up to 150 cm in height. The plant has a thick taproot with lateral roots. Its stems are erect, green or sometimes mottled with purple, and typically glabrous, though they may be tomentulose near the top. The leaves are large and palmately 3-5-lobed, with angular lobes and sinuses. Proximal leaves are usually present at flowering and are petiolate with winged petioles. The blades are deltate to ovate, with irregularly serrate margins. Distal leaves are smaller and may be entire or lobed. The inflorescence consists of 2-7 nodding heads arranged in racemiform or paniculiform clusters. The involucres are narrowly campanulate, with dark green to blackish bracts. The calyculi are triangular and glabrous. The flowers are pale yellow, with corollas 9-15 mm long. The cypselae are tan to brown, ribbed, and have pale yellow pappi. The plant is diploid with 2n = 16.
Habitat
Nabalus trifoliolatus is found in a variety of habitats, including moist woodlands, meadows, and alpine areas. It is commonly associated with rich, well-drained soils and is often found in deciduous or mixed forests. In alpine regions of northern New England and Canada, it may grow as a dwarf plant with deeply divided leaves. The species is adapted to temperate climates and is distributed across eastern Canada and the eastern United States.
Cultivation
Nabalus trifoliolatus is not commonly cultivated but can be grown in garden settings that mimic its natural habitat. It prefers partial shade to full sun and well-drained, fertile soil. The plant benefits from consistent moisture and may require protection from strong winds in exposed locations. Propagation can be achieved through seed or division of the root system. Due to its ornamental value and ecological role, it is sometimes included in native plant gardens and restoration projects.
Uses
Nabalus trifoliolatus is primarily of ecological interest, serving as a food source for pollinators such as bees and butterflies. It is also used in native plant restoration projects to enhance biodiversity in natural areas. While not widely used in horticulture, its attractive foliage and flowers make it a potential candidate for wildflower gardens. The plant has no significant economic or medicinal uses in modern practice, though it may have been used historically by indigenous peoples for various purposes.
Other common names
Gall-Of-The-EarthThree-Leaved RattlesnakerootThreeleaved Rattlesnakeroot
Distribution
Labrador · Newfoundland · New Brunswick · Nova Scotia · Ontario · Prince Edward Island · Quebec · Saint Pierre and Miquelon · North Carolina · Massachusetts · Pennsylvania · St.Pierre-Miquelon · New York · Indiana · Rhode I. · Maryland · Connecticut · Michigan · Georgia · New Jersey · Maine · Prince Edward I. · Vermont · Kentucky · New Hampshire · Virginia · West Virginia · Tennessee · South Carolina · Ohio
Synonyms
Prenanthes trifoliolata f. trifoliolataPrenanthes alba var. nanaNabalus trifoliolatus var. trifoliolatusNabalus trifoliolatus var. obovatusPrenanthes serpentaria var. nanaNabalus trifoliolatus var. dissectifoliusPrenanthes trifoliolata var. trifoliolataPrenanthes trifoliolata var. nanaPrenanthes trifoliolataPrenanthes nanaPrenanthes nanaNabalus nanusNabalus trifoliolatus var. nanus
