It is a bush reaching 4 meters in height. Its elliptical leaves are 7-18.5 by 2.7-9 centimeters. The bases of the leaves are rounded or notched at the point of attachment to the petioles. The tips of the leaves come to a short tapered tip. The leaves have 10-15 pairs of secondary veins emanating from their midribs. Its petioles are 3-5 millimeters long and covered in dense woolly hairs. Its solitary, fragrant flowers are on 2-8 millimeter long pedicels that occur at extra-axillary or terminal positions. Its pedicels are covered in dense white woolly hairs and have an oval, green bracteole that is 6-8 by 5-7 millimeters. The bracteoles have a notched base and come to point at their tip. Its green, oval sepals are 1-1.5 by 0.8-1.2 centimeters and come to a tapering point at their tips. The sepals have white silky hairs at their base. Its mature, fleshy petals are yellow with streaks of red highlights at their base. The base of the petals form a 10 millimeter long tube, with free triangular lobes that are 2-2.4 by 1.2-1.5 millimeters and come to a tapering point at their tip. The outer surface of the petals is covered in dense, silky white hairs. The inner surface of the petals is covered in woolly hairs that are more rigid at the petal’s apex. Its flowers have 250-300 yellow stamens that are 3 millimeters long with longitudinal grooves that separate the lobes of their anthers. The tissue connecting the lobes of the anthers is over-grown to form a convex cap covered in fine hairs. Its flowers have 3-10 carpels that are 2.5 millimeters long and covered in dense woolly hairs. Its rectangular to cylindrical styles are 1 millimeter long with a wide tip that is folded in to form a groove. The styles are covered in silky hairs.[4]
Reproductive biologyedit
The pollen of A. lutea is shed as permanent tetrads.[5]
Habitat and distributionedit
It has been observed growing in dense forests near rivers.[4]
Usesedit
Extracts from its root and stem bark has been reported to contain bioactive molecules with larvicidal properties in tests with Anopheles gambiae larva.[6]
Referencesedit
^Cosiaux, A.; Couvreur, T.L.P.; Erkens, R.H.J. (2019). "Asteranthe lutea". IUCN Red List of Threatened Species. 2019: e.T158244A132516514. doi:10.2305/IUCN.UK.2019-3.RLTS.T158244A132516514.en. Retrieved 20 November 2021.
^"Asteranthe lutea Vollesen". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved August 5, 2019.
^Stearn, William (2004). Botanical Latin. Portland, Ore. Newton Abbot: Timber Press David & Charles. ISBN9780881926279.
^ abcVollesen, Kaj (1980). "Notes on Annonaceae from Tanzania". Botaniska Notiser (in English and Latin). 133: 53–62.
^Couvreur, Thomas L. P.; Botermans, Marleen; van Heuven, Bertie Joan; van der Ham, Raymond W. J. M. (2008). "Pollen morphology within the Monodoraclade, a diverse group of five African Annonaceae genera". Grana. 47 (3): 185–210. doi:10.1080/00173130802256913. ISSN 0017-3134.
^Kihampa, Charles; Joseph, Cosam C.; Nkunya, Mayunga H.H.; Magesa, Stephen M.; Hassanali, Ahmed; Heydenreich, Matthias; Kleinpeter, Erich (2009). "Larvicidal and IGR activity of extract of Tanzanian plants against malaria vector mosquitoes". Journal of Vector Borne Diseases. 46 (2): 145–52. PMID 19502695.
October 29, 2023
asteranthe, lutea, species, plant, genus, asteranthe, native, tanzania, borge, vollesen, botanist, first, formally, described, species, 1980, named, after, yellow, luteus, latin, petals, conservation, statusendangered, iucn, scientific, classificationkingdom, . Asteranthe lutea is a species of plant in the genus Asteranthe It is native to Tanzania 2 Kaj Borge Vollesen the botanist who first formally described the species in 1980 named it after its yellow luteus in Latin petals 3 4 Asteranthe luteaConservation statusEndangered IUCN 3 1 1 Scientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade MagnoliidsOrder MagnolialesFamily AnnonaceaeGenus AsterantheSpecies A luteaBinomial nameAsteranthe luteaVollesen Contents 1 Description 1 1 Reproductive biology 1 2 Habitat and distribution 1 3 Uses 2 ReferencesDescription editIt is a bush reaching 4 meters in height Its elliptical leaves are 7 18 5 by 2 7 9 centimeters The bases of the leaves are rounded or notched at the point of attachment to the petioles The tips of the leaves come to a short tapered tip The leaves have 10 15 pairs of secondary veins emanating from their midribs Its petioles are 3 5 millimeters long and covered in dense woolly hairs Its solitary fragrant flowers are on 2 8 millimeter long pedicels that occur at extra axillary or terminal positions Its pedicels are covered in dense white woolly hairs and have an oval green bracteole that is 6 8 by 5 7 millimeters The bracteoles have a notched base and come to point at their tip Its green oval sepals are 1 1 5 by 0 8 1 2 centimeters and come to a tapering point at their tips The sepals have white silky hairs at their base Its mature fleshy petals are yellow with streaks of red highlights at their base The base of the petals form a 10 millimeter long tube with free triangular lobes that are 2 2 4 by 1 2 1 5 millimeters and come to a tapering point at their tip The outer surface of the petals is covered in dense silky white hairs The inner surface of the petals is covered in woolly hairs that are more rigid at the petal s apex Its flowers have 250 300 yellow stamens that are 3 millimeters long with longitudinal grooves that separate the lobes of their anthers The tissue connecting the lobes of the anthers is over grown to form a convex cap covered in fine hairs Its flowers have 3 10 carpels that are 2 5 millimeters long and covered in dense woolly hairs Its rectangular to cylindrical styles are 1 millimeter long with a wide tip that is folded in to form a groove The styles are covered in silky hairs 4 Reproductive biology edit The pollen of A lutea is shed as permanent tetrads 5 Habitat and distribution edit It has been observed growing in dense forests near rivers 4 Uses edit Extracts from its root and stem bark has been reported to contain bioactive molecules with larvicidal properties in tests with Anopheles gambiae larva 6 References edit Cosiaux A Couvreur T L P Erkens R H J 2019 Asteranthe lutea IUCN Red List of Threatened Species 2019 e T158244A132516514 doi 10 2305 IUCN UK 2019 3 RLTS T158244A132516514 en Retrieved 20 November 2021 Asteranthe lutea Vollesen Plants of the World Online The Trustees of the Royal Botanic Gardens Kew n d Retrieved August 5 2019 Stearn William 2004 Botanical Latin Portland Ore Newton Abbot Timber Press David amp Charles ISBN 9780881926279 a b c Vollesen Kaj 1980 Notes on Annonaceae from Tanzania Botaniska Notiser in English and Latin 133 53 62 Couvreur Thomas L P Botermans Marleen van Heuven Bertie Joan van der Ham Raymond W J M 2008 Pollen morphology within the Monodoraclade a diverse group of five African Annonaceae genera Grana 47 3 185 210 doi 10 1080 00173130802256913 ISSN 0017 3134 Kihampa Charles Joseph Cosam C Nkunya Mayunga H H Magesa Stephen M Hassanali Ahmed Heydenreich Matthias Kleinpeter Erich 2009 Larvicidal and IGR activity of extract of Tanzanian plants against malaria vector mosquitoes Journal of Vector Borne Diseases 46 2 145 52 PMID 19502695 Retrieved from https en wikipedia org w index php title Asteranthe lutea amp oldid 1172716195, wikipedia, wiki, book, books, library,
