Thurniaceae
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The plant family Thurniaceae belongs to the order of the sweet grass (Poales). It has a disjoint area with one genus in South America in northeastern Brazil and in Guyana and the other genus in South Africa . The Thurniaceae species thrive in humid areas.
Description and ecology
The species of the Thurniaceae are large, vigorous, perennial herbaceous plants with rhizomes . The alternate, at the plant-based concentrates (basal), three to four lines arranged leaves are short cut easily, sessile, leathery, parallel-veined and entire or.
Many flowers are densely packed in heady inflorescences ; there can be one or more flower heads on a stem.
The small, hermaphrodite flowers are radial symmetry and threefold. There are six equally protean, membranous bloom present. There are two circles with three fertile stamens each ; they are always free from each other, but they can be fused with the bloom in some species. Three carpels have become a top permanent ovary grown. There is a short stylus with three stigmas. The pollination is carried by the wind ( anemophily ).
The triangular capsule fruits each contain only three seeds. The seeds are hairy and winged.
Systematics and distribution
The Thurniaceae family was established in 1907 by Adolf Engler in Syllabus of Plant Families, 5th edition, p. 94. The type genus is Thurnia Hook. f. A synonym for Thurniaceae Engl. Nom. cons. is Prioniaceae SLMunro & HPLinder . The closest relatives are the Juncaceae and Cyperaceae .
The Thurniaceae family thrives in humid areas and has a disjoint area , one genus is common in the Neotropics of northeastern Brazil and Guyana and the other genus occurs in southern Africa .
There are only one or two genera with about three to five species in the Thurniaceae family:
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Prionium E. Mey. : It contains only one species:
- Palm Reed ( Prionium serratum . (L. f) Drege , Syn .: Prionium Palmita . E.Mey , Acorus Palmita . Light , Juncus serratus L. f. ): It is in the South African provinces of the West over the East Cape to southern KwaZulu-Natal spread. This type was used to make brushes from it.
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Thurnia Hook. f. : The only three types are common in South America:
- Thurnia jenmanii Hook. f. : It only occurs in Guyana .
- Thurnia polycephala snow : It occurs in southeastern Colombia, Venezuela and northern Brazil.
- Thurnia sphaerocephala (Rudge) Hook. f. : It occurs in northern South America from Colombia to northern Brazil.
swell
- The family of thurniaceae in APWebsite. (Sections systematics and description)
- The Thurniaceae family at DELTA by L. Watson and MJDallwitz. (Section description)
Individual evidence
- ↑ Thurniaceae at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed December 25, 2014.
- ^ A b Thurniaceae in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved December 25, 2014.
- ↑ a b c d Rafaël Govaerts (Ed.): Thurniaceae. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved January 8, 2017.
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