Goetzea
| Goetzea | ||||||||||||
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Goetzea elegans |
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| Scientific name | ||||||||||||
| Goetzea | ||||||||||||
| Wydler |
Goetzea is a plant genus of the family of the nightshade family (Solanaceae). It includes two species thatare endemic to Puerto Rico and Hispaniola, respectively. For a long time the genus was run with three other genera in its own Goetzeaceae family, but molecular biological studies showed that they belong to the nightshade family. The generic name honors Johann August Ephraim Goeze (Goetze) (1731 - 1823), a German clergyman and zoologist.
description
The Goetzea species grow as trees or bushes . The leaves are alternate, petiolate, leathery and criss-crossed by a multitude of veins.
The flowers stand individually in the armpits. The chalice is bell-shaped or cup-shaped and has six lobes. The crown is funnel-shaped, the crown hem is set with six lobes that are bent back. The six stamens protrude beyond the corolla , the stamens are thread-like, hairless and start near the corolla base or in the corolla tube. The stylus is thread-like, the stigma two- or three-lobed. There are only a few ovules , which are arranged hanging.
The fruits are inversely egg-shaped, leathery berries on which the calyx is permanent. The seeds are elliptical in shape. The seeds lack the endosperm , the embryo is straight, the thick and fleshy cotyledons are longer than the rest of the reduced embryo.
Systematics
External system
The assignment of the genus to the nightshade family has been questioned for a long time, so Armando Hunziker , for example, in his systematics of the nightshade family, excludes this and three other genera from the family based on the seed morphology and assigns them to a separate Goetzeaceae family.
Molecular biological studies have shown, however, that the genera belonging to the Goetzeaceae belong to the nightshade family together with the genera Duckeodendron and Metternichia . Richard Olmstead leads them in his family system in a subfamily Goetzeoideae.
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Cladogram simplified to
Internal system
There are two types:
- Goetzea elegans Wydler , endemic to Puerto Rico
- Goetzea ekmanii O.E. Schulz , endemic to Hispaniola
swell
Individual evidence
Most of the information in this article has been taken from the sources given under literature; the following sources are also cited:
- ↑ Lotte Burkhardt: Directory of eponymous plant names . Extended Edition. Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2018. [1]
- ^ A b Armando T. Hunziker: The Genera of Solanaceae . ARG Gantner Verlag KG, Ruggell, Liechtenstein 2001, ISBN 3-904144-77-4 .
- ^ A b Eugenio Santiago-Valentin and Richard G. Olmstead: Phylogenetics of the Antillean Goetzeoideae (Solanaceae) and Their Relationships within the Solanaceae based on Chloroplast and ITS DNA Sequence Data . In: Systematic Botany , Volume 28, Issue 2. pp. 452-460.
literature
- Henri Alain Liogier: Descriptive Flora of Puerto Rico and Adjancent Islands, Spermatophyta , Volume IV: Melastomataceae to Lentibulariaceae . Universidad de Puerto Rico, 1995, ISBN 0-8477-2337-2 .
