Hartwrightia

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Hartwrightia
Status TNC G2.svg
Imperiled  (NatureServe)
Scientific classification
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Order:
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Tribe:
Genus:
Hartwrightia

Species:
H. floridana
Binomial name
Hartwrightia floridana

Hartwrightia is a genus of North American flowering plants in the tribe Eupatorieae of the sunflower family. [1] The genus contains a single species, Hartwrightia floridana, native to the US states of Georgia and Florida. [2] [3] The species is sometimes referred to by the common name Florida hartwrightia. [4]

Contents

Although superficially similar to some species in Eupatorium , it can be distinguished by having a basal rosette of leaves, flowers of a different shape, and the fruit which lacks the parachute-like pappus found in Eupatorium . [5] The plant is about one meter tall. It flowers in the fall and the flowers are white to pink or blue. [6]

The genus is named for plant collector Samuel Hart Wright, 1825–1905. [6]

Taxonomy

Hartwrightia is classified in the subtribe Liatrinae of the tribe Eupatorieae, along with, for example, Liatris , Carphephorus , and Garberia . [7] Molecular data, while placing Hartwrightia firmly within subtribe Liatrinae, give mixed results regarding its closest relative. The nuclear ITS/ETS regions place it firmly with Trilisa, with which it shares multiple synapomorphies but also differs at multiple sites. In contrast, it is almost an exact match in the plastid DNA sequences with Carphephorus corymbosus. These results suggest that Hartwrightia may be of hybrid origin but is transgressive from either putative parental lineage for multiple morphological characters [8]

Ecology

Hartwrightia floridana is a herbaceous perennial which grows in the southeastern United States (Georgia and Florida). It is found in open areas, for example in pine flatlands, [9] but is not tolerant of grazing or solid forest cover. It seems to do better in the presence of regular fires. It is considered threatened and the biggest threat is loss of habitat. It requires wet soil, and is sensitive to hydrological changes. [5] The seed is a sticky achene without the large pappus which would suggest wind dispersal, so it is presumed to be transmitted by animals. [5]

Related Research Articles

Harold Ernest Robinson was an American botanist and an entomologist.

<i>Liatris</i> Genus of flowering plants

Liatris is a genus of flowering plants in the boneset tribe within the sunflower family native to North America. Its most common name is blazing star. Some species are used as ornamental plants, sometimes in flower bouquets.

Heliantheae Tribe of sunflower plants

The Heliantheae are the third-largest tribe in the sunflower family (Asteraceae). With some 190 genera and nearly 2500 recognized species, only the tribes Senecioneae and Astereae are larger. The name is derived from the genus Helianthus, which is Greek for sun flower. Most genera and species are found in North America and South America, particularly in Mexico. A few genera are pantropical.

<i>Eupatorium</i> Genus of plants

Eupatorium is a genus of flowering plants in the aster family, Asteraceae, containing from 36 to 60 species depending on the classification system. Most are herbaceous perennials growing to 0.5–3 m (1.6–9.8 ft) tall. A few are shrubs. The genus is native to temperate regions of the Northern Hemisphere. Most are commonly called bonesets, thoroughworts or snakeroots in North America. The genus is named for Mithridates Eupator, king of Pontus.

Eupatorieae Tribe of plants

Eupatorieae is a tribe of over 2000 species of plants in the aster family. Most of the species are native to tropical, subtropical, and warm temperate areas of the Americas, but some are found elsewhere. Well-known members are Stevia rebaudiana, a number of medicinal plants (Eupatorium), and a variety of late summer to autumn blooming garden flowers, including Ageratum (flossflower), Conoclinium (mistflower), and Liatris.

<i>Eupatorium capillifolium</i> Species of flowering plant

Eupatorium capillifolium, or dogfennel, is a North American perennial herbaceous plant in the sunflower family, native to the eastern and south-central United States. 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 branching green threads coming out of the stem in fractal patterns. When crushed, the leaves and flowers smell rather unpleasant.

<i>Brickellia</i> Genus of flowering plants

Brickellia is a North American genus of about 100 to 110 species of plants in the aster family, Asteraceae, known commonly as brickellbushes. They are found in Canada, the United States, Mexico, and Central America. Many species are native to the American southwest, especially Texas. Brickellia is among the more basal lineages of the Eupatorieae and should not be assigned to a subtribe pending further research.

Pappobolus is a genus of flowering plant in the sunflower family native to the Andes Mountains of Colombia, Ecuador, and Peru.

<i>Eutrochium</i> Genus of flowering plants

Eutrochium is a North American genus of herbaceous flowering plants in the sunflower family. They are commonly referred to as Joe-Pye weeds. They are native to the United States and Canada, and have non-dissected foliage and pigmented flowers.

<i>Eupatorium altissimum</i> Species of flowering plant

Eupatorium altissimum, the tall thoroughwort, is a perennial plant whose native range includes much of the eastern and central United States and Canada (Ontario south to Nebraska, eastern Texas, the Florida Panhandle, and Massachusetts. It almost always grows on limestone soils, as does Brickellia eupatorioides, with which it is often confused. It can hybridize with Eupatorium serotinum.

<i>Chromolaena</i> Genus of flowering plants

Chromolaena is a genus of about 165 species of perennials and shrubs in the family Asteraceae. The name is derived from the Greek word χρῶμα (khrôma), meaning "color", and the Latin word laena, meaning "cloak". It refers to the colored phyllaries of some species. Members of the genus are native to the Americas, from the southern United States to South America. One species, Chromolaena odorata, has been introduced to many parts of the world where it is considered a weed.

<i>Conoclinium</i> Genus of flowering plants

Conoclinium, the mistflowers, is a genus of four species of herbaceous perennial flowering plants, native to North America. They are 0.5 to 2 metres tall, and have blue to purple or violet flowers.

<i>Eupatorium serotinum</i> Species of flowering plant

Eupatorium serotinum, also known as late boneset or late thoroughwort, is a fall-blooming herbaceous plant native to North America.

<i>Garberia</i> Genus of flowering plants

Garberia is a monotypic genus of flowering plants in the aster family, Asteraceae, containing the single species Garberia heterophylla. It is endemic to Florida in the United States, where it is distributed in the northern and central counties. The plant is known commonly as garberia and Garber's scrub starts.

<i>Carphephorus</i> Genus of flowering plants

Carphephorus is a genus of North American plants in the sunflower family. They are native to the southeastern United States from Louisiana to Virginia. Plants of this genus are known commonly as chaffheads.

Brickelliastrum is a North American genus of flowering plants in the tribe boneset tribe within the sunflower family. Brickelliastrum has at times been lumped with Brickellia or Steviopsis, but chromosome number (x=10) and molecular data are in agreement in showing that it is distinct from either of these. Despite having the general appearance of Brickellia, members of Brickelliastrum have cypselae that have only 5-7 ribs, funnel-shaped corollas, and a style with an unenlarged, glabrous base.

Steviopsis is a genus of Mexican plants in the boneset tribe within the sunflower family.

<i>Hymenostephium</i> Genus of flowering plants

Hymenostephium is a genus of flowering plants in the family Asteraceae. It includes herbs and slender shrubs that occur from Mexico through Central America and into South America.

<i>Iostephane</i> Genus of flowering plants

Iostephane is a genus of Mexican flowering plants in the sunflower family.

Pamela Soltis is an American botanist. She is a distinguished professor at the University of Florida, curator at the Florida Museum of Natural History, principal investigator of the Laboratory of Molecular Systematics and Evolutionary Genetics at the Florida Museum of Natural History, and founding director of the University of Florida Biodiversity Institute.

References

  1. D.J.N.Hind & H.E.Robinson. 2007. Tribe Eupatorieae In: The Families and Genera of Vascular Plants vol.VIII. (Joachim W.Kadereit & Charles Jeffrey, volume editors. Klaus Kubitzky, general editor). Springer-Verlag. Berlin, Heidelberg.
  2. Holzinger, J. M. 1893. The systematic position of Hartwrightia floridana. Bulletin of the Torrey Botanical Club 20: 287–288.
  3. Biota of North America Program 2013 county distribution map
  4. "Hartwrightia floridana". Natural Resources Conservation Service PLANTS Database. USDA . Retrieved 10 May 2015.
  5. 1 2 3 "Hartwrightia floridana - Gray ex S. Wats". NatureServe.
  6. 1 2 "Hartwrightia A. Gray ex S. Watson". Flora of North America .
  7. Schilling, Edward E.; Patricia B. Cox (2001). "Systematic analysis of Liatrinae (Asteraceae)". Botany 2001 Abstracts. Botanical Society of America. Archived from the original on 2001-04-27.
  8. Schilling, E. E. 2011. Hybrid genera in Liatrinae (Asteraceae: Eupatorieae). Molecular Phylogenetics and Evolution 59: 158-167.
  9. Oliveira, L. O.; Huck, R. B.; Gitzendanner, M. A.; Judd, W. S.; Soltis, D. E.; Soltis, P. S. (2007). "Molecular phylogeny, biogeography, and systematics of Dicerandra (Lamiaceae), a genus endemic to the southeastern United States" (free full text). American Journal of Botany. 94 (6): 1017–27. doi: 10.3732/ajb.94.6.1017 . PMID   21636471.