Spiranthes romanzoffiana, commonly known as hooded lady's tresses or Irish lady's-tresses, is a species of orchid. Collected by Chamisso during the Romanzov expedition it was described by him in 1828 and named for Count Nikolay Rumyantsev who financed the expedition. This orchid is native to North America, Ireland and Great Britain.
Spiranthes delitescens is a rare species of orchid known by the common names reclusive lady's tresses, Canelo Hills lady's tresses, and Madrean lady's tresses. It is native to Arizona in the United States, where there are only four occurrences. It is threatened by the loss and degradation of its habitat. It is a federally listed endangered species of the United States.
Cirsium horridulum, called bristly thistle, purple thistle, or yellow thistle is a North American species of plants in the tribe Cardueae within the family Asteraceae. It is an annual or biennial. The species is native to the eastern and southern United States from New England to Florida, Texas, and Oklahoma as well as to Mexico, Belize, Guatemala, Honduras, and the Bahamas.
Asclepias variegata, commonly called the redring milkweed or white milkweed, is a plant in the family Apocynaceae. It is native to eastern North America, where it is found in Canada and the United States. It is most common in the Southeastern United States, and becomes rare in the northern edge of its range.
Aristida tuberculosa, common names seaside threeawn, seabeach needlegrass, beach three-awned grass and beach needlegrass, is annual plant native to the United States.
Atriplex glabriuscula, common names Scotland orache, smooth orache, Babington's orache or seaside orach is an Atriplex species native to North America and northern Europe. It is an annual.
Desmodium sessilifolium, common name sessileleaf ticktrefoil, is a species of plant in the legume family, Fabaceae. It is native to North America.
Botrychium simplex, the little grapefern, is a species of fern in the family Ophioglossaceae that is native to North America and Greenland. It is a perennial.
Carex crawfordii, common name Crawford sedge, is a species of Carex native to North America.
Linum intercursum, common names sandplain flax and sandplain wild flax, is a perennial plant native to the United States.
Draba reptans, common names Carolina draba, Carolina whitlow-grass, Creeping whitlow-grass, and Whitlow-grass, is an annual plant in the family Brassicaceae that is native to North America.
Carex oligosperma, common name fewseed sedge, few-seeded sedge, and few-fruited sedge, is a perennial plant in the Carex genus. A distinct variety, Carex oligosperma var. oligosperma, exists.
Carex polymorpha common names variable sedge and many forms sedge, is a perennial species of Carex native to North America.
Carex prairea, common name prairie sedge, is a species of Carex native to North America. It is a perennial.
Croton michauxii, commonly known as elliptical rushfoil, and Michaux's croton, is a plant species in the family Euphorbiaceae that is native to the United States. It is an annual plant.
Pycnanthemum torreyi, common name Torrey's mountainmint, is a perennial plant native to the United States.
Carex schweinitzii, common name Schweinitz's sedge, is a Carex species native to North America. It is a perennial.
Carex sterilis, common names dioecious sedge, sterile sedge and Atlantic sedge, is a perennial plant native to North America.
Schoenoplectus torreyi, common name Torrey bulrush or Torrey's bulrush, is a species of Schoenoplectus found in North America.
Stachys hyssopifolia, commonly known as hyssop-leaf hedge-nettle, rough hedge-nettlehyssop-leaved hedgenettle, and hyssop hedge-nettle is a species of flowering plant in the mint family (Lamiaceae).
