Welcome to our series of field guides - part of the MatBio Initiative at the Whitney Laboratory of Marine Bioscience! Our guides document the plant and animal species living in the Matanzas Basin, a coastal ecosystem stretching from St. Augustine to Palm Coast in NE Florida. They are works in ...more ↓
Aeschynomene americana is a species of flowering plant in the legume family known by many common names, including shyleaf,forage aeschynomene,American joint vetch (United States and Australia), thornless mimosa (Sri Lanka), bastard sensitive plant (Jamaica), pega pega, pega ropa, antejuela, ...more ↓
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Agalinis linifolia (Nutt.) Britton
Ecological interactions
Conservation status
W1; S3, G4?.
Distribution
Wet pine savannas (WLPS, VWLPS).
Notes
Occasional. Aug–Sep ; Sep–Oct . Thornhill 965, 977, 1037 (NCSC). Specimens seen in the vicinity: Sandy Run: Taggart SARU 454 (WNC!). [= RAB, Weakley]
Agalinis obtusifolia Raf.
Ecological interactions
Conservation status
W1; S2S3, G4G5Q.
Distribution
Wet pine savannas (WLPS, VWLPS).
Notes
Infrequent. Sep–Oct ; Oct–Nov . Thornhill 1083, 1264 (NCSC). Specimens seen in the vicinity: Sandy Run: Taggart SARU 471 (WNC!). [= RAB, Weakley]
Agalinis purpurea (common name Purple False Foxglove) is an annual late summer flowering forb with purple flowers, which is native to the Eastern United States. Like many other members of the Agalinis genus, it grows in sunny locations, and is hemiparasitic on a variety of hosts, particularly graminoids.
Aletris aurea Walter
Distribution
Wet pine savannas (WLPS, VWLPS).
Notes
Occasional. Mid May–Jul ; Aug. Thornhill 426, 535, 536 (NCSC). Specimens seen in the vicinity: Sandy Run [ Haw’s Run]: Taggart SARU 309 (WNC!); Sandy Run [Neck] Wilbur 53674 (DUKE!). [= RAB, FNA, Weakley]
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Alternanthera philoxeroides, commonly known as Alligator weed, is an emergent aquatic plant. It originated in South America, but has spread to many parts of the world and is considered an invasive species in Australia, China, New Zealand, Thailand and the United States.
Amaranthus australis is also known as southern amaranth or southern water-hemp. The plant usually grows from 1 to 3 m (3 to 9 feet) in height, though some have been known to grow up to 9 m (27 feet) high. The stems can be up to 30 cm in diameter. It is a herbaceous annual. It is found in many Southern states of the USA, Mexico, the West Indies, and South America. They are ...more ↓
Amianthium is a monotypic genus of perennial plants growing from bulbs. It contains the single species Amianthium muscitoxicum, known in English as fly poison from a literal translation of the Latin muscitoxicum, and is noted for its pretty flowers and its toxic alkaloid content. While all parts of the plant are poisonous, the bulb is particularly ...more ↓
Ammannia coccinea is a species of flowering plant in the loosestrife family known by several common names, including valley redstem, scarlet toothcup, and purple ammannia. It is native to most of the contiguous United States, with the exception of the Pacific Northwest and New England. It is generally found in moist areas, such as riverbanks and pond ...more ↓
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Arnoglossum ovatum var. lanceolatum (Nutt.) D.B. Ward
Ecological interactions
Conservation status
SR-P; S2, G4G5.
Distribution
Wet pine savannas (VWLPS).
Notes
Rare. Late Jul–Oct . Thornhill 943 (NCSC). Specimens seen in the vicinity: Sandy Run: Taggart SARU 376 (WNC!). [= Cacalia lanceolata Nutt. sensu RAB; <
...more ↓
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Asclepias incarnata (swamp milkweed, rose milkweed, swamp silkweed, and white Indian hemp) is a herbaceous perennial plant species native to North America. It grows in damp to wet soils and also is cultivated as a garden plant for its flowers, which attract butterflies and other pollinators with nectar. Like most other milkweeds, it has sap containing ...more ↓
The Fewflower Milkweed, Asclepias lanceolata, is a species of milkweed that is native to the coastal plain of the United States from New Jersey to Florida and Southeast Texas.A. lanceolata is an upright, perennial plant that can grow between 3 and 5 feet tall, with red-orange flowers blooming in the summer months. It can also be referred to as Cedar Hill ...more ↓
Asclepias longifolia Michx.
Ecological interactions
Conservation status
W1; S2S3, G4G5.
Distribution
Wet pine savannas (WLPS, VWLPS).
Notes
Infrequent. May–Jun ; Jun–Jul . Thornhill 249, 278, 355 (NCSC). Specimens seen in the vicinity: Sandy Run: Taggart SARU 137 (WNC!). [= RAB, Weakley]
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Stems to 8 m, terete, glabrous. Petiole 4-12 cm, with apical adaxial gland cluster; leaf blade ovate, 6-20 × 4-15 cm, sparsely appressed pubescent to glabrous, base deeply cordate, apex acute-acuminate; lateral veins 6 or 7 pairs. Peduncle 3.7-13 cm. Pedicel 1.2-4 cm. Sepals ovate-oblong, 3-4 mm, ciliate. Corolla yellowish white; tube 1.2-1.8 cm, limb 3-4 cm in diam.; lobes shorter than tube, ...more ↓
Baccharis halimifolia is a fall-flowering deciduous or evergreen shrub commonly found in wetlands on the Atlantic and Gulf coastal plains of the eastern United States from Texas and Florida northward to Massachusetts, inland to the District of Columbia and Pennsylvania. The species is also occurs in Mexico, the West Indies, and southernmost Nova Scotia in Canada.
Bacopa monnieri (waterhyssop, brahmi, thyme-leafed gratiola, water hyssop) is a perennial, creeping herb whose habitat includes wetlands and muddy shores. Brahmi is also the name given to Centella asiatica, particularly in North India, and Kerala where it is also identified in Malayalam as muttil (മുത്തിള്) or kodakan. ...more ↓
Balduina uniflora Nutt.
Distribution
Wet pine flatwoods (WPF-T), wet pine savannas (SPS-RF, WLPS, VWLPS), roadsides.
Notes
Occasional. Late Jul–Sep . Thornhill 870 (NCSC). Specimens seen in the vicinity: Sandy Run [Hancock]: Taggart SARU 409 (WNC!); Sandy Run [Neck]: Wilbur 53637 (DUKE!; as Helenium pinnatifidum ). [= RAB, FNA, Weakley]
Bidens laevis is a species of flowering plant in the daisy family known by the common names bur-marigold and smooth beggarticks. It is native to the southern half of the United States, where it grows in wetlands, including estuaries and riverbanks. It is similar in appearance to its relative Bidens cernua and the two are sometimes confused. This is an annual ...more ↓
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Boehmeria cylindrica (L.) Swartz is an herb in the family Urticaceae, common name "false nettle." It is widespread in eastern North America and the Great Plains from New Brunswick to Florida to Texas to Nebraska, with scattered reports of isolated populations in New Mexico, Arizona, and Utah as well as in Bermuda, Mexico, Central America, the West Indies and South ...more ↓
False aster or White doll's daisy (syn. Boltonia diffusa) is a species of ornamental plant.
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Calopogon barbatus, Bearded grass-pink, is a species of orchid native to the southeastern United States from Louisiana to North Carolina.
The Many-flowered Grass-pink, Calopogon multiflorus, is a species of orchid. It is a perennial forb that requires recurring ground fires to maintain its habitat. It falls under the genus Calopogon, meaning "beautiful beard" in Greek, referring to the stamen-like bristles or beard on the lip.
Calopogon pallidus, pale grass-pink, is a species of orchid native to the southeastern United States from Louisiana to Virginia.
Calopogon tuberosus var. tuberosus (L.) Britton, Sterns & Poggenb.
Distribution
Wet pine savannas (SPS-RF, WLPS, VWLPS).
Notes
Infrequent. Apr–Jul . Thornhill 421 (NCSC). Specimens seen in the vicinity: Sandy Run [Hancock]: Taggart SARU 187 (WNC!). [= Calopogon pulchellus R. Br. sensu RAB; = FNA, Weakley]
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Canna flaccida Salisb. is a species of the Canna genus, a member of the family Cannaceae. Indigenous to the wetlands of south-eastern USA. It was a parent to many of the early-hybridised cannas originally known as orchid flowered cannas, but now correctly named as Italian Group cannas. It grows well as a water canna. Originally described by the early American ...more ↓
Origin: Exotic
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
The Bulbous Cress, Bittercress, or Spring Cress (Cardamine bulbosa) is a perennial plant native to eastern North America. This plant grows in moist soils of bottomland woods and wet meadows.
Cardamine pensylvanica is a species of Cardamine known by the common name Pennsylvania bittercress. It is native to most of Canada and the United States from coast to coast. It is generally found in moist to wet areas, such as the mud on riverbanks. It is a biennial herb producing one or more erect or leaning, branching stems which are purple to green in color and ...more ↓
Trilisa paniculata (J.F. Gmel.) Cass.
Distribution
Wet pine flatwoods (WPF-T), wet pine savannas (SPS-RF).
Notes
Infrequent. Aug–Oct ; Sep–Nov . Thornhill 1540 (NCSC). Specimens seen in the vicinity: Sandy Run [Neck]: Taggart SARU 530 (WNC!; as Carphephorus paniculatus ). [= RAB; = Carphephorus paniculatus (J.F. Gmel.) H.J.-C. Hebert sensu FNA; =
...more ↓
Centella asiatica, commonly known as centella, is a small, herbaceous, annual plant of the family Mackinlayaceae or subfamily Mackinlayoideae of family Apiaceae, and is native to India, Sri Lanka, northern Australia, Indonesia, Iran, Malaysia, Melanesia, Philippines, Papua New Guinea, and other parts of Asia. It is used as a medicinal herb in Ayurvedic medicine, ...more ↓
Ceratophyllum demersum (hornwort, rigid hornwort, coontail, or coon's tail) is a species of Ceratophyllum. It is a submerged, free-floating aquatic plant, with a cosmopolitan distribution, native to all continents except Antarctica. It is a harmful introduced weed in New Zealand. It is also a popular aquarium plant.
Ceratophyllum echinatum, commonly called Spineless Hornwort, is an aquatic perennial plant of the family Ceratophyllum. It can be found in ponds and lakes. It is principally an eastern North American species and the only species of its genus endemic to North America....
As the common name suggests, this thistle can become quite tall. It resembles Cirsium discolor (Pasture Thistle) and other common thistles, except that its leaves are less pinnatifid and spiny. The native Pasture Thistle prefers habitats that are more dry and sunny, but it is also sometimes found in wooded habitats. An aggressive Eurasian species, Cirsium vulgare (Bull Thistle), ...more ↓
Conoclinium coelestinum, the blue mistflower, is a species of herbaceous perennial flowering plant in the family Asteraceae. It was formerly classified in the genus Eupatorium, but phylogenetic analyses in the late 20th century research indicated that that genus should be split, and the species was reclassified in Conoclinium.
Coreopsis gladiata is a perennial plant species of the genus Coreopsis in Asteraceae. Coreopsis species are commonly called tickseeds.
Coreopsis leavenworthii (Leavenworth's Tickseed) is an annual or short lived perennail plant species of the genus Coreopsis in Asteraceae. It is often grouped within Coreopsis tinctoria which it resembles. Plants typically grow 30 to 70 cm tall with yellow flower heads that sometimes have reddish-brown blotches at the base of the ray laminae or petals. The ...more ↓
Crinum americanum is an aquatic angiosperm native to North America. They grow in small groups in still water habitats. Crinum species are now members of the family Amaryllidaceae, subfamily Amaryllidoideae; they were formerly placed in the family Liliaceae. They are monocots with six flower petals in white at approximately 10 cm across.
Origin: Exotic
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Diodia virginiana is a plant species in the Rubiaceae, common name Virginia buttonweed. It is a spreading, matted perennial with opposite leaves, often mottled because of a virus that attacks the foliage. Flowers are white, cross-shaped with 4 petals. Fruits are green, often floating on water. The species can become a nuisance weed, hard to eradicate because of ...more ↓
Drosera capillaris, the pink or spathulate-leaved sundew (not to be confused with Drosera spatulata), is a small carnivorous plant of the family Droseraceae in the genus Drosera. They are frequently found in wet pine flatwoods and bogs of the southeastern United States, ranging from eastern Texas east to Florida and north to Virginia, as well as in some areas of ...more ↓
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Eclipta prostrata (syn. Eclipta alba) commonly known as false daisy, yerba de tago, and bhringraj, is a species of plant in the family Asteraceae.
Eichhornia crassipes, commonly known as (common) water hyacinth, is an aquatic plant native to the Amazon basin, and is often considered a highly problematic invasive species outside its native range.
Erigeron vernus (L.) Torr. & A. Gray
Distribution
Wet pine savannas (SPS-T, SPS-RF, WLPS, VWLPS), adjacent roadsides.
Notes
Frequent. Late Mar–Jun . Thornhill 112, 177, 213, 217, 766 (NCSC). Specimens seen in the vicinity: Sandy Run [Neck]: Taggart 185 (NCU!), Wilbur 55318, 67091 (DUKE!). [= RAB, FNA, Weakley]
Eriocaulon compressum Lam.
Distribution
Pine savannas (SPS-RF).
Notes
Apr–Oct . Reported from Shaken Creek Preserve by LeBlond (2000) , but no specimens have been seen by the senior author. [= RAB, FNA, Weakley]
Eriocaulon decangulare, commonly known as ten-angled pipewort, hat pin and bog button, is a monocotyledonous plant native to the eastern United States, Mexico and Nicaragua. The plant's distribution is quite irregular, with several disjunct populations and a discontinuous primary range. Most of its habitat in the United States runs along the Atlantic Coastal ...more ↓
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Eupatorium capillifolium (dogfennel) is a perennial herbaceous plant in the family Asteraceae, native to southeastern North America. It is generally between 50 cm and 2 meters tall with several stems that fork from a substantial base. The stems and base are covered in leaves so dissected that they resemble green hairs coming out of the stem in fractal patterns. When ...more ↓
Eupatorium leptophyllum, commonly called False fennel, is a herbaceous perennial plant in Asteraceae native to the southeastern United States. Like other members of the genus Eupatorium, it is about one to two meters tall and has inflorescences containing a large number of white flowers with disc florets and no ray florets.E. leptophyllum grows in wet areas ...more ↓
Eupatorium leucolepis, commonly called Justiceweed or white-bracted thoroughwort, is a herbaceous perennial plant in Asteraceae native from the eastern coastal states of the USA, from New York to Texas.
Eupatorium mohrii, commonly called Mohr's thoroughwort, is a herbaceous perennial plant in Asteraceae native to the southeastern coastal states of the United States, from North Carolina to Florida and Louisiana to Texas. It can also be found in the Caribbean. The stems grow from 30 to over 100 cm tall and are produced from tuberous rhizomes. As with other species of ...more ↓
Eupatorium pilosum Walter
Distribution
Wet pine flatwoods (WPF-T), wet pine savannas (SPS-T, SPS-RF).
Notes
Occasional. Aug–Oct . Thornhill 947, 1520 (NCSC). Specimens seen in the vicinity: Sandy Run [Hancock]: Taggart SARU 356 (WNC!); Sandy Run [Neck]: Wilbur 53712 (DUKE!). [= RAB, FNA, Weakley]
Eupatorium rotundifolium, commonly called Roundleaf thoroughwort, is a herbaceous perennial plant in Asteraceae native to the eastern states of the United States in an area from New Jersey to Oklahoma south to Texas to Florida. The stems grow from 40 to over 100 cm tall and are produced from short rhizomes. The inflorescences are composed of a large number of white flower ...more ↓
Eupatorium semiserratum, commonly called Smallflower thoroughwort, is a herbaceous perennial plant in Asteraceae native to the Southeastern states of the United States from Florida to South Carolina east to Missouri. The stems grow from 40 to over 100 cm tall and are produced from short rhizomes. The inflorescences are composed of a large number of white flowers with disc ...more ↓
Eupatorium serotinum, also known as late boneset or late thoroughwort, is a fall-blooming herbaceous plant native to North America. Like other members of the genus Eupatorium, it is about one to two meters tall and has inflorescences containing a large number of white flowers with disc florets and no ray florets.
Galium tinctorium, the stiff marsh bedstraw, is a species of plants in the Rubiaceae. It is widespread and common across the eastern part of North America, from Texas to Labrador and from Minnesota to Florida, plus eastern and central Mexico and the Dominican Republic. It is classed as a noxious weed in some parts of the northeastern United States.
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Sophronanthe pilosa (Michx.) Small
Distribution
Wet pine savannas (SPS-T, VWLPS), adjacent roadsides.
Notes
Occasional. Jun–Sep . Thornhill 538, 1304 (NCSC). Specimens seen in the vicinity: Sandy Run [Hancock]: Taggart SARU 648 (WNC!); Sandy Run [Neck]: Wilbur 53645, 53671, 53680, 57636 (DUKE!; as Gratiola pilosa ). [= Gratiola pilosa Michx. sensu
...more ↓
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Habenaria floribunda is a species of orchid widespread across much of Latin America, the West Indies and Florida.
Platanthera nivea (Nutt.) Luer
Ecological interactions
Conservation status
State T; S1, G5.
Distribution
Pine savannas.
Notes
May–Sep . Reported from Sandy Run by LeBlond and Weakley (1991) , but no specimens have been seen in Shaken Creek Preserve by the senior author. [= Habenaria nivea (Nutt.) Spreng. sensu RAB; = FNA,
...more ↓
Habenaria repens, commonly called the Waterspider bog orchid or the Floating orchid, is an orchid species in the genus Habenaria found on marshy shores in Southern United States (AL, AR, FL, GA, LA, MS, NC, OK, SC, TX + Puerto Rico) and in Mexico.
Helenium pinnatifidum (Schwein. ex Nutt.) Rydb.
Ecological interactions
Conservation status
SR-P; S2, G4.
Distribution
Pine savannas and adjacent ditches.
Notes
Apr–May . Reported from Sandy Run by LeBlond and Weakley (1991) , but no specimens have been seen in Shaken Creek Preserve by the senior author. [= RAB, FNA,
...more ↓
Helianthus angustifolius is a species of sunflower known by the common name narrowleaf sunflower or swamp sunflower. It is native to the central and eastern United States. It is typically found in the coastal plain habitat (both the Atlantic and Gulf), particularly in wet areas. It is often cultivated for its bright, showy yellow flowers.
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Hydrocotyle bonariensis once a member of the family Apiaceae, now in the family Araliaceae and of the genus Hydrocotyle is a hairless and creepyperennial.
Hydrocotyle umbellata, is an aquatic plant that thrives in wet, sandy habitat. Its English common name is manyflower marsh pennywort or dollarweed. It is native to North America and parts of South America. It can also be found growing as an introduced species and sometimes a noxious weed on other continents. It is an edible weed that can be used in salads or as a ...more ↓
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Hymenocallis crassifolia Herb. is a plant in the Amaryllidaceae. Common name is "coastal Carolina spider-lily." It is known from wetlands in North Carolina, South Carolina, Georgia and Florida. It is distinguished from other species of the genus by its stiff, coriaceous, liguliform leaves.
Hypericum cistifolium Lam.
Distribution
Wet pine flatwoods (WPF-T), wet pine savannas (SPS-T, SPS-RF, WLPS, VWLPS).
Notes
Frequent. Jun–Aug . Thornhill 459, 607, 683, 718, 799, 805, 843 (NCSC). [= RAB, Weakley]
Hypericum mutilum is a species of St. John's wort known by the common name dwarf St. John's wort. It is native to parts of North America, and is present in other parts as an introduced species. It is an annual or perennial herb taking a multibranched erect form up to about 60 centimeters tall. The oval green leaves are one or two centimeters long and are covered in tiny ...more ↓
Hypoxis juncea (commonly known as fringed yellow star-grass and rushy hypoxis) is a star-grass species with leaves that are so narrow as to be comparable to thread. It is found in the United States on coastal plains from Florida to North Carolina. The species is a facultative wetland perennial forb.
Hyptis alata (Musky Mint, or Clustered Bushmint) is a shrub species of flowering plant in the Lamiaceae family, the Mint Family. The genus Hyptis is commonly known as the bushmints. It is a native species throughout the southeastern United States from Texas to Florida; it is found in wetlands, prairies, pond margins and wet flatwoods. ...more ↓
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Juncus acuminatus is a species of rush known by the common names Tapertip Rush, Tufted Rush and Sharp-fruited Rush. It is native to North and Central America, where it can be found in and around water bodies from central Canada to Honduras. It is a rhizomatous perennial herb forming clumps up to about 80 centimeters tall. The inflorescence is an open array ...more ↓
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident