Flora of Delaware

Crataegus delawarensis, commonly known as the Delaware hawthorn was a hawthorn species endemic to northern Delaware. Crataegus delawarensis can be differentiated from other members of its series by its narrower leaf blades and yellow anthers. It was a tree-like shrub that could grow up to 30 ft. in height. There is only one known occurrence between Newport and New Castle, Delaware. Despite searches, Crataegus delawarensis has not been seen since 1903. Due to its limited range and intermediate characteristics, Crataegus delawarensis is assumed to have been of hybrid origin between Crataegus

Rhynchospora knieskernii is a rare species of sedge known by the common name Knieskern's beaksedge. It is endemic to the state of New Jersey in the United States, where it occurs naturally in the Pine Barrens. Reports have cited it present in Delaware as well, but these populations appear to have been introduced. It is threatened by the destruction and degradation of its habitat. It is a federally listed threatened species of the United States. This perennial sedge produces clumps of very narrow, triangular stems lined with thin leaves. Inflorescences occur at the tips and on the sides of the

Narthecium americanum is a species of flowering plant in the Nartheciaceae known by the common names yellow asphodel and bog asphodel. It is native to New Jersey in the United States. It is now apparently limited to that state, having likely been extirpated from Delaware, North Carolina, and South Carolina. This rhizomatous perennial herb produces an erect stem 25 to 45 centimeters tall. It has narrow linear leaves up to 20 centimeters long by just a few millimeters wide around the base of the stem. Smaller leaves occur higher on the stem. The inflorescence is a dense raceme of yellow flowers

Alnus maritima ( also known as the seaside alder, delmarva alder, or brook alder) is a species of shrub or small tree in the family Betulaceae. Alnus maritima is endemic to the United States, and is found naturally in three disjunct populations in Oklahoma, Georgia, and in Maryland and Delaware on the Delmarva Peninsula. Alnus maritima is the only autumn-blooming member of the genus Alnus native to North America. All other North American alders bloom in the spring. The autumn-blooming phenology is a characteristic that Alnus maritima shares with two old-world Alnus species, Alnus nitida and

Dichanthelium hirstii is a species of grass known by the common name Hirst's panic grass. It is native to the eastern United States, where it is extant in Delaware, New Jersey, and North Carolina. It is extirpated in Georgia. This grass produces small tufts or large clumps of stems which can be up to a meter tall in some areas. The inflorescence is a panicle of small spikelets that grow pressed against the stem. This grass grows in ponds in the Pine Barrens on the coastal plain of New Jersey and on coastal grasslands in North Carolina. When it occurred in Georgia it grew in cypress swamps. It

Bidens bidentoides (formerly Diodonta bidentoides), commonly called swamp beggar's-ticks and delmarva beggarticks, is an annual, herbaceous, flowering plant in the Asteraceae family. It is native to the northeastern and east-central parts of the United States, the coastal plain of the States of Maryland, Delaware, Pennsylvania, and New Jersey plus the region around the Hudson River estuary in New York.

Spiranthes bightensis, the Atlantic ladies tresses, is a terrestrial orchid native to coasts of the north-eastern United States.

Trollius laxus is a rare flowering plant species in the buttercup family, Ranunculaceae. It is native to North America and is considered to have two subspecies, one with a distribution is the east and one in the west. Common names for Trollius laxus include American globeflower and American spreading globeflower. The American Globeflower, Trollius laxus is an endangered species of flowering plants Native to Northeastern United States. This species of plants is limited in range by their ability to exclusively survive in wetlands and marshes. Thus, clusters of the species are constantly

Rhododendron atlanticum, the dwarf azalea or coastal azalea, is a species of Rhododendron native to coastal areas of the eastern United States, from New Jersey south to Georgia. It is a very tough plant, responding to overgrazing or forest fires by generating new shoots.

Crataegus pennsylvanica, known as the Pennsylvania thorn, is a species of hawthorn native to Delaware, New York, North Carolina, Ontario, Ohio, and Pennsylvania, that grows to about 8 m in height. The mature trees have few thorns. This species has often been confounded with C. mollis, but the two species have separate native ranges except for an area of overlap in northeastern Ohio.

Micranthemum micranthemoides (syn. Hemianthus micranthemoides), commonly known as Nuttall's mudflower is an extinct species of subaquatic Micranthemum that previously inhabited wet areas from Virginia to New York. It is commonly misidentified as a similar species, Micranthemum glomeratum, in aquascaping.

Isoetes appalachiana, commonly known as the Appalachian quillwort (not to be confused with its close relative Isoetes engelmannii, which shares the same common name), is an aquatic pteridophyte that is widely distributed in the eastern United States. It is most frequently encountered in wetlands at low to middle elevations of the Appalachian Mountains in Pennsylvania, though its range extends from there south to Florida and Alabama along the eastern slopes of the mountains. It is a tetraploid and is grouped in the Isoetes engelmannii complex.

Gentiana autumnalis, the pine barren gentian, is a 1–2 ft (30–61 cm) tall species of flowering plant in the family Gentianaceae. It is native to eastern North America coastal pinebarrens from New Jersey to South Carolina.

Rhexia aristosa is a species of flowering plants in the Melastomataceae known by the common names awned meadowbeauty and awnpetal meadowbeauty. It is native to the eastern United States, where it occurs on the coastal plain from New Jersey to Alabama. This perennial herb produces stiff stems up to about 70 to 100 centimeters tall. The leaves are linear to lance-shaped and up to 5 centimeters tall. The flowers have lavender petals up to 2 centimeters long. Flowering occurs in June through September. This species grows in several types of wetland, including bays, bogs, flatwoods, seasonally

Muhlenbergia torreyana is a species of grass known by the common names New Jersey muhly, Torrey's muhly, pinebarren smokegrass, and Torrey's dropseed. It is native to the eastern United States, where today it occurs in Maryland, New Jersey, North Carolina, and Tennessee. It has been extirpated from Delaware, Georgia, and New York. This rhizomatous perennial grass produces compressed, blue-green stems up to 75 centimeters tall. The stiff, sharp-pointed leaves are up to 20 centimeters in length. The inflorescence is a cylindrical panicle of tiny purple flowers. Flowering occurs in August

Eurybia compacta, commonly known as the slender aster, is an herbaceous perennial native to the eastern United States from New Jersey to Georgia. It is commonly found along the coastal plain in dry sandy soils, especially in pinelands. While it is not considered to be in high danger of extinction, it is of conservation concern and has most likely been extirpated from much of its original range. The slender aster was for a long time considered to be a variety of E. surculosa, but Guy Nesom's recent research within the genus has shown that it is distinct enough to be treated as a species. It

Solidago stricta, commonly known as wand goldenrod or willowleaf goldenrod, is a North American species of goldenrod in the family Asteraceae. A herbaceous perennial dicot it grows in the southern and southeastern United States. It has been described as having a wand like appearance and grows in sandy pine barren and wet coastal plain habitats. It blooms August to November. This species was first described by British botanist, William Townsend Aiton in 1789.

Liatris pilosa (syn. Liatris graminifolia), the grass-leaf blazingstar, sandhills blazing star (a name it shares with Liatris cokeri), shaggy blazing star, or shaggy gayfeather, is a species of flowering plant in the family Asteraceae. It is native to the US states of Pennsylvania, New Jersey, Maryland, Delaware, Virginia, North Carolina, and South Carolina, east of the Appalachian Mountains. A perennial reaching 4 ft (1.2 m), it is typically found in open woodlands or forest edges, at the edges of salt marshes, and in dune depressions.

Gaylussacia brachycera, commonly known as box huckleberry or box-leaved whortleberry, is a low North American shrub related to the blueberry and the other huckleberries. It is native to the east-central United States (Pennsylvania, Delaware, Maryland, Virginia, West Virginia, North Carolina, Kentucky, and Tennessee). Gaylussacia brachycera is easily distinguished from other members of its genus by its leaves: they resemble those of boxwood (hence its name) and lack the resin glands typical of huckleberries. Like its relatives, it bears white urn-shaped flowers in the early summer, which

Euphorbia purpurea is a species of Euphorbia known by the common names Darlington's glade spurge, glade spurge, and purple spurge. It is native to the Eastern United States, where it occurs from Ohio and Pennsylvania south to North Carolina. It has been extirpated from Alabama; it was believed lost from Delaware until a population was rediscovered in 1997. This perennial herb grows from a rhizome and reaches a maximum height around one meter. It has slightly hairy, oppositely arranged leaves up to 3 centimeters long. The bracts are purplish in color, giving the plant its name. The bumpy fruit

Cleistesiopsis divaricata (commonly known as the rosebud orchid, small spreading pogonia, or the large dragonhead pogonia) is a terrestrial species of orchid native to the eastern United States from New Jersey to Florida.

Lobelia boykinii is a species of flowering plant in the bellflower family known by the common name Boykin's lobelia. It is native to the eastern United States, where it occurs from Delaware to Florida. There is also a disjunct occurrence in New Hampshire. This rhizomatous perennial herb produces a hollow stem up to 85 centimeters tall. The plant is semi-aquatic, often growing in water for part of the year. The needle-like leaves are alternately arranged. The flowers are blue or white. They are pollinated by insects, especially bees. Flowering is also affected by the water level. This plant

Amelanchier obovalis, the coastal serviceberry, coastal juneberry, or shadbush, is a species of flowering plant in the Rosaceae family. It is native to the Atlantic coastal plain of the United States, from New Jersey to Georgia, typically in pine barrens and other dry woodlands. A deciduous shrub that grows to 3–5 ft (1–2 m) tall, with small five-petaled white flowers. It produces edible dark blue to purple-black fruits and has dull green leaves that can grow up to 2 in (50 mm) long.

Eupatorium linearifolium, known as narrowleaf bushy eupatorium, is a fall-blooming herbaceous plant native to North America. Like other members of the genus Eupatorium it has inflorescences containing a large number of small white flower heads, each with 5 disc florets but no ray florets. Works such as Flora of North America define E. linearifolium to include all the plants which in the past were treated as E. cuneifolium. The most distinctive feature of E. linearifolium, compared with other Eupatorium species, is that the stems branch near the ground. Eupatorium linearifolium is found in the

Stenanthium leimanthoides is a poisonous monocot wildflower. It is either treated as a separate species to Stenanthium densum or as a synonym of that species. A common name is pine barren deathcamas. Within the family Melanthiaceae, it is placed in the tribe Melanthieae. Molecular phylogenetic studies in the 21st century have resulted in substantial rearrangement of the species in this tribe, many being moved to different genera. S. leimanthoides was previously placed in Zigadenus as Z. leimanthoides, and will be found under this name in older sources. It is native to the southernmost United

Pinus serotina, the pond pine, black bark pine, bay pine, marsh pine, or pocosin pine, is a pine tree found along the Southeastern portion of the Atlantic coastal plain of the United States, from southern New Jersey south to Florida and west to southern Alabama. Pond pine distribution may be starting to spread west towards Mississippi and Tennessee.

Helonias bullata, the swamp pink, is a rare perennial rhizomatous herb native to the eastern United States. The root system is extensive in comparison to the apparent size of the plant on the surface. Blooming in March to May, its fragrant flowers are pink and occur in a cluster at the end a vertical spike which may reach up to 3 ft (0.91 m) in height. It has evergreen, lance-shaped, and parallel-veined leaves ranging from dark green to light yellow green in color that form a basal rosette. Swamp pink is a federally threatened species that was historically distributed from Staten Island, New

Monotropsis odorata, commonly known as Appalachian pigmy pipes, is a species of flowering plant in the genus Monotropsis, part of heath family.

Gentiana catesbaei, commonly called Elliot's gentian, American gentian, or bottle gentian, is a wildflower native to the eastern North America. It grows in the swampy areas from Virginia to Florida and has showy, pale blue flowers which appear in the late fall from September to December. It shares the common name "bottle gentian" with several other species.

Lophiola is a genus of monocotyledonous flowering plants native to eastern North America. It has variously been placed in the Liliaceae, the Haemodoraceae, the Tecophilaeaceae or the Nartheciaceae. Lophiola aurea Ker Gawl. - southeastern United States from Louisiana to North Carolina; also isolated populations in Delaware, New Jersey, and Nova Scotia Fernald (1921) recommended recognizing three species, separating the Nova Scotia populations as L. septentrionalis and the New Jersey-Delaware material as L. americana. More recent investigations, however, have suggested that the group be