Petenaea cordata
| Petenaea cordata | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the family | ||||||||||||
| Pentenaeaceae | ||||||||||||
| Christenh. , MFFay & MWChase | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Petenaea | ||||||||||||
| Lundell | ||||||||||||
| Scientific name of the species | ||||||||||||
| Petenaea cordata | ||||||||||||
| Lundell |
Petenaea cordata is the only species within the family of the Pentenaeaceae in the order of the Huerteales . Petenaea cordata is endemic to Central America .
description
Petenaea cordata grows as a large shrub or as a tree up to 10 meters high. The alternate leaves consist of a reddish, short-haired petiole and a simple, papery leaf blade with a heart-shaped base and hand-shaped veins . The leaf margin is finely serrated and ends at the apex in a rounded or pointed tip. The leaves are dense and hairy on the underside and almost bare on the upper side. They are 8.5-16 inches long and the petiole is up to 5-11 inches long. There are very small, pointed and triangular stipules that fall off early . The entire plant is covered with simple or branched trichomes .
The short-stalked, hermaphrodite and small flowers with a simple flower envelope are grouped in long-stalked, multi-flowered and paniculate inflorescences, which are also reddish overflowing and whitish hairy. The 4 to 5 lobed, pink-colored sepals with whitish hairs on the outside are lanceolate in shape and later turned back. Inside at the base sit tight, pink, multicellular and shaggy-fringed hair. The petals are absent, there are 8 to 12 short and bare stamens . The hairy ovary with dicklichem, recently, hairy at the base stylus with small, flat scar is, upper constant at 4 to 5 fused carpels and correspondingly 4 to 5 seed chambers. The numerous ovules sit on massive, hanging placentas . There is a fleshy and bulbous-lobed disc .
The fruit is up to about 0.6–1.2 centimeters in size, more or less round to egg-shaped, weakly lobed and many-seeded, weakly hairy, fleshy berries with remains of the style. When ripe, it is red to dark chestnut brown and edible. The small seeds are about 1 millimeter in size.
distribution
Petenaea cordata occurs in southeastern Mexico, Belize, and Guatemala .
literature
- MJ Christenhusz, Michael F. Fay, James J. Clarkson u. a .: Petenaeaceae, a new angiosperm family in Huerteales with a distant relationship to Gerrardina (Gerrardinaceae). In: Botanical Journal of the Linnean Society. 164, 2010, pp. 16-25, doi: 10.1111 / j.1095-8339.2010.01074.x , online at researchgate.net.
- JW Byng, MJ Christenhusz: Petenaeaceae. In: The Global Flora. Vol. 2, Plant Gateway, 2018, ISBN 978-0-9929993-8-4 , online at researchgate.net.
Web links
- Petenaea cordata at PlantSystematics.org.
- Petenaeaceae at Delta.
Individual evidence
- ↑ Rafaël Govaerts (ed.): Petenaea. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved May 21, 2020.