Goetzea
Goetzea is a genus of flowering plants of the nightshade family (Solanaceae ). It includes two species that are endemic to Puerto Rico or Hispaniola. For a long time the genus was performed with three other genera in their own family Goetzeaceae, molecular biological studies have shown, however, that they belong to the nightshade family.
- 3.1 Notes and references
- 3.2 Literature
Description
The Goetzea species grow as trees or shrubs. The leaves are alternate, stalked, leathery and crisscrossed by a multitude veins.
The flowers appear singly in the axils. The cup is filled bell-shaped or cup-shaped, with six corners. The crown is funnel-shaped, the coronary band is busy with six lobes, which are bent back. The six stamens are on the crown out, the stamens are filiform, glabrous and set near the Kronbasis or in the corolla tube. The style is filiform, the stigma two - or three-lobed. There are only a few ovules present, which are arranged suspended.
The fruits are inversely egg-shaped, leathery berries, where the cup is stable. The seeds are elliptically shaped. The seeds lack the endosperm, the embryo is even, the thick and fleshy cotyledons are longer than the remaining, reduced embryo.
System
Outer systematics
The assignment of the genus to the nightshade family was doubted for a long time, so includes, for example Armando Hunziker in his classification of Solanaceae this and three other species due to the seed morphology of the family, and assigns them to their own family Goetzeaceae.
Molecular biological studies have demonstrated that counted to the Goetzeaceae genera together with the genera Duckeodendron and Metternichia are classified in the nightshade family. Richard Olmstead leads them into his scheme of the family in a subfamily Goetzeoideae.
Duckeodendron
Metternichia
Coeloneurum
Henoonia
Espadaea
Goetzea
Cladogram simplified after
Inside systematics
There are two types:
- Goetzea elegans Wydler, endemic to Puerto Rico
- Goetzea ekmanii O.E. Schulz, endemic to Hispaniola