Peponium
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Peponium is a genus of plants within the cucurbit family (Cucurbitaceae). The 20 or so species are common in Africa.
description
Vegetative characteristics
Peponium species are perennial , herbaceous plants . The stems are prostrate or ascending. The tendrils are in two parts. The leaf blades are simple, often palmately lobed, and scattered with glands on the underside.
Generative characteristics
Peponium species are dioeciously segregated ( diocesan ).
The male flowers are arranged in lateral racemose inflorescences , rarely individually. They have bracts . The inflorescences are usually accompanied by a single flower in the same leaf axil. The bracts are hood-shaped, membranous and glandular. The flower tube is long and almost cylindrical. The calyx lobes are lanceolate. The five white or yellow petals are free or only briefly fused and with entire margins. The three stamens are all bithekish , or two stamens are bithekish and one has only one theka. The stamens start in the flower tube, the stamens are free, but the anthers grow together to form a narrow, cylindrical head. The connective is narrow.
The female flowers are solitary, their inflorescence resembles the male. The ovary is cylindrical with narrower ends. The numerous ovules are horizontal. The scar is three-lobed.
The egg-shaped to ellipsoidal fruit is often slightly beaked, smooth, thin-walled, fleshy and red when ripe. The seeds are oval, flat, smooth and black in outline.
distribution
The genus Peponium occurs in tropical and southern Africa, on Madagascar , Aldabra and on the Seychelles .
Systematics
The genus Peponium was founded in 1897 by Heinrich Gustav Adolf Engler in Nat. Plant family Nachtr. 1 (163), p. 318. Type species is Peponium mackennii (Naudin) Engl.
The genus Peponium belongs to the Unterertribus Benincasinae from the tribe Benincaseae in the subfamily Cucurbotoideae within the family Cucurbitaceae . The sister taxon is the genus Lagenaria .
The genus includes around 20 species, here is a selection:
- Peponium betsiliense Keraudren
- Peponium boivinii (Cogn.) Engl.
- Peponium caledonicum Engl.
- Peponium chirindense cogn.
- Peponium cienkowskii Engl.
- Peponium grandidieri Keraudren
- Peponium hirtellum Keraudren
- Peponium humbertii Keraudren
- Peponium laceratum Keraudren
- Peponium leucanthum Cogn.
- Peponium mackenii Engl.
- Peponium mannii Hook. f.
- Peponium pageanum C.Jeffrey
- Peponium perrieri Keraudren
- Peponium poissonii Keraudren
- Peponium racemosum Keraudren
- Peponium seyrigii Keraudren
- Peponium sublitorale C. Jeffrey & JSPage
- Peponium vogelii (Hook. F.) Engl.
swell
literature
- C. Jeffrey: Peponium , In: Flora Zambesiaca , Volume 4, 1978. (online)
Individual evidence
- ↑ a b Peponium at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed January 19, 2017.
- ↑ Alexander Kocyan, Li-Bing Zhang, Hanno Schaefer, Susanne S. Renner: A multi-locus chloroplast phylogeny for the Cucurbitaceae and its implications for character evolution and classification . Molecular Phylogenetics and Evolution, Volume 44, August 2007, pp. 553-577. doi : 10.1016 / j.ympev.2006.12.022 , full text (PDF; 381 kB)
- ↑ a b c NCBI
- ↑ a b c C. Jeffrey: Peponium , In: Flora Zambesiaca , Volume 4, 1978. (online)