Gotthilf Heinrich Ernst Muhlenberg

Ulmus rubra, the slippery elm, is a species of elm native to eastern North America. Other common names include red elm, gray elm, soft elm, moose elm, and Indian elm. It is closely related to the European wych elm (U. glabra), which has a very similar flower structure but lacks the pubescence over the seed.

Digitaria ischaemum is a species of crabgrass known by the common names smooth crabgrass and small crabgrass. It is native to Europe and Asia, but it is known throughout much of the warm temperate world as an introduced species and often a common roadside and garden weed. It is an annual grass producing an inflorescence with two or more narrow branches lined with tiny spikelets. It is easily confused with other members in the genus, particularly southern crabgrass in California which differs by having spikelets of nearly twice the length. It may also be confused with Bermuda Grass, but

Salix lucida, the shining willow, Pacific willow, red willow, or whiplash willow, is a species of willow native to northern and western North America, occurring in wetland habitats. It is the largest willow found in British Columbia. It is a deciduous large shrub or small tree growing to 4–15 metres (13–49 ft) tall. The shoots are greenish-brown to grey-brown. The leaves are narrow elliptic to lanceolate, 4–17 centimetres (1+1⁄2–6+1⁄2 in) long and 1–3.5 cm (1⁄2–1+1⁄2 in) broad, glossy dark green above, usually glaucous green below, hairless or thinly hairy. The flowers are yellow catkins 1–9

Salix discolor, the American pussy willow or glaucous willow, is a species of willow native to North America, one of two species commonly called pussy willow. It is native to the vast reaches of Alaska as well as the northern forests and wetlands of Canada (British Columbia east to Newfoundland), and is also found in the northern portions of the contiguous United States (Washington east to Maine, and south to Maryland). It is a weak-wooded deciduous shrub or small tree growing to 6 m (20 ft) tall, with brown shoots. The leaves are oval, 3–14 cm long and 1–3.5 cm broad, green above and downy

Gentiana alba (called plain, pale, white, cream, or yellow gentian) is a herbaceous species of flowering plant in the Gentian family Gentianaceae, producing yellowish-white colored flowers from thick white taproots. It is native to North America from Manitoba through Ontario in the north, south to Oklahoma, Arkansas and North Carolina, and it is listed as rare, endangered, threatened or extirpated in parts of this range. This species resembles bottle gentian (Gentiana andrewsii), which has blue flowers and a less upright habit, and shares much of the same range. Gentiana alba starts to bloom

Arundinaria gigantea is a species of bamboo known as giant cane (not to be confused with Arundo donax), river cane, and giant river cane. It is endemic to the south-central and southeastern United States as far west as Oklahoma and Texas and as far north as New York. Giant river cane was economically and culturally important to indigenous people, with uses including as a vegetable and materials for construction and craft production. Arundinaria gigantea and other species of Arundinaria once grew in large colonies called canebrakes covering thousands of acres in the southeastern United States,

Cyperus erythrorhizos, also known as red-rooted flatsedge or redroot flatsedge, is a species of flowering plant in the sedge family Cyperaceae. It is native to North America, ranging from Canada to Mexico. It has bright red roots, a distinctive feature not found in any other North American flatsedge. Both the scientific name and the common name emphasize this fact.

Trifolium stoloniferum, the running buffalo clover, is an endangered species of perennial clover native to the eastern and midwestern United States.

Carex polymorpha common names variable sedge and many forms sedge, is a perennial species of Carex native to North America.

Scirpus pendulus is a species of flowering plant in the sedge family known by the common names pendulous bulrush, rufous bulrush, and nodding bulrush. It is native to North America, where it can be found throughout the eastern United States and Canada, through the American midwest, some areas of the western United States, and into Mexico. It is also known as an introduced species in Australia. It grows in many types of moist and wet habitat, including disturbed areas such as ditches, and sometimes in drier areas. It is a perennial herb growing from a short, thick rhizome system. The erect,

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Salix myricoides, the bayberry willow or blue-leaf willow, is a species of flowering plant in the family Salicaceae, native to the Great Lakes region of the Midwestern United States, and to eastern Canada. It is typically found on beaches and dunes of the Lakes, and occasionally along inland streams and in fens, if calcareous. For example, in Maine it is found only on the ice-scoured shore of the St. John River.

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Scutellaria elliptica, commonly called hairy skullcap, is a species of flowering plant in the mint family (Lamiaceae). It is a perennial forb found in the southeastern and mid-eastern states of the United States.

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Bartonia paniculata, commonly known as twining screwstem, is a saprophytic, annual or biennial species that grows in acidic, sandy-peaty wetlands.

Arundinaria tecta, also known as switchcane or river cane, is part of the Arundinaria genus of bamboo species. Native to the Southeastern United States, the Arundinaria genus is considered to have the only temperate bamboos and has many species that can be hard to differentiate. A. tecta is often confused with A. gigantea and A. appalachiana and may need the combined effort of range, morphology, and genetics to distinguish between the species. Regardless, A. tecta and the Arundinaria genus as a whole have many significant cultural and environmental implications in the Southeastern United

Lithospermum molle, the softhair marbleseed, is a species of flowering plant in the forget-me-not family. This species is a narrow endemic, native primarily to the Nashville Basin of Tennessee, where it is found in limestone prairies near cedar glades. There are disjunct populations in similar habitats in the Ozark Mountains of Missouri, in northwest Alabama, in Logan and Warren County, Kentucky as well as other small areas of Tennessee. Outside of Tennessee, it is very rare and perhaps no longer exists in Alabama and Kentucky due to habitat destruction. Because of its highly restricted

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