Philcoxia goiasensis
| Philcoxia goiasensis | ||||||||||||
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| Philcoxia goiasensis | ||||||||||||
| P.Taylor |
Philcoxia goiasensis is a plant from the family of plantain plants that occurs exclusively in Brazil. It was first described in 2000 by Peter Taylor based on a collection from 1966. Recent work suggests that itcould be carnivorous .
description
Philcoxia goiasensis is an annual , herbaceous plant and reaches a height of between 10 and 15 centimeters. The rhizome is leafless, the roots are around 0.2 millimeters thick, the stem axis is unbranched and 0.4 to 0.6 millimeters thick.
There are six to twenty leaves on the stem axis . The leaf stalks are 2 to 7 millimeters long, smooth and thread-like. The leaf blades are broadly elliptical to narrowly kidney-shaped and measure 1.3 to 2.6 millimeters in diameter.
The upright, thread-like and winding inflorescence is simple or branched, becomes 9 to 15 centimeters high and is occupied with glands in the upper section . The bracts are ovate to triangular and 0.2 to 0.5 millimeters long.
The flower stalks are almost upright, 12 to 27 millimeters long and at the tip covered with about 0.2 millimeter long glandular hairs that excrete a sticky secretion. These glands are also found on the narrow, egg-shaped, pointed sepals that are around 0.7 millimeters long and around 0.3 millimeters wide. The pale blue, darker nerved crown has a yellow flower tube around 4 millimeters long and 0.5 millimeters wide at the base, which widens towards the throat. The lips of the crown are bilobed, the upper one is about 2 millimeters long, the lower 1.5 to 1.8 millimeters long.
The stamen is partially fused, a total of 0.25 millimeters long and arched, the fused part is finely haired, the anthers 0.4 millimeters long and elliptical. The ovary is slightly flattened, elliptical, about 0.5 millimeters long, the stylus is suddenly enlarged towards the tip. The approximately round capsule fruit has a diameter of 1.5 millimeters, the seeds are broadly elliptical, around 0.3 millimeters long, their surface is shiny and granular to reticulate.
distribution
The species is endemic to the Brazilian state of Goiás , where it grows in open locations with pure quartz sand soils in the cerrado .
Botanical history
The first specimens of the species were collected in 1966 and were provisionally placed with the water hose family (Lentibulariaceae). However, Peter Taylor of Kew Gardens determined it in collaboration with David Philcox in the early 1970s as the previously undescribed genus of the figwort family (Scrophulariaceae). Taylor began a description of the genus and species, but did not complete it for over two decades; the material remained unprocessed in his hand. The species was first described in 2000 only when the genus was first described independently using the Philcoxia bahiensis and Philcoxia minensis found later .
proof
- Peter Taylor, Vinicius Castro Souza, Ana Maria Giulietti and Raymond Mervin Harley: Philcoxia: a new genus of Scrophulariaceae with three new species from eastern Brazil. In: Kew Bulletin. 55, 2000, pp. 153-163
- Peter W. Fritsch, Frank Almeda, Angela B. Martins, Boni C. Cruz, D. Estes: Rediscovery and Phylogenetic Placement of Philcoxia minensis (Plantaginaceae), with a Test of Carnivory. In: Proceedings of the Californian Academy of Sciences. 58 (21), 2007, pp. 447-467, PDF online