Drosera prostratoscaposa
| Drosera prostratoscaposa | ||||||||||||
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| Scientific name | ||||||||||||
| Drosera prostratoscaposa | ||||||||||||
| Lowrie & Carlquist |
Drosera prostratoscaposa is a carnivorous plant belonging to the genus sundew ( Drosera ). It is native to a very small area in a coastal area of Australia.
description
The tubers are relatively large for the genus. The scaly stem is around 4 centimeters long underground, above ground the plant forms a native rosette of close-fitting, stalked leaves that are still small at flowering, but later grow to a length of around 4 centimeters and a width of 1.3 centimeters .
One to four branched inflorescence stems are formed per rosette, each bearing five to twenty-five flowers . During the flowering period, these inflorescence stems are upright, but when they are in contact with the fruit they lie flat on the ground. The jasmine- scented flowers close at night. The ovate-lanceolate, simple or two-lobed and serrated sepals are fused at their roots and are up to 4 millimeters long. The obovate, blunt petals with notched tips are white, 8 millimeters long and 4 millimeters wide. The filaments are 2.7 mm long, the elliptical ovary flowering time 1.5 millimeters long and 1.2 millimeters wide. The three styluses are branched in the upper half into numerous, approximately finger-shaped sections, the stigmas one to three lobes. The fruit is a 2.3 millimeter long capsule .
Distribution area
The species is locally endemic to the coastal areas of southwestern Western Australia in the Fitzgerald River National Park . The known distribution area is at the intersection of a tributary of the Hamersley River and Hamersley Drive, 40 kilometers southwest of the South Coast Highway .
The type site stretches for around 3 kilometers along a street and forms dense stands there. The site's substrates are fine-grain black sand in the plain and a mixture of laterite , sand and, to a small extent, quartz-bearing rock on rubble slopes. It is possible that further locations exist in the Fitzgerald River National Park, but cannot be said for sure due to the partial inaccessibility of the park.
Systematics
The species was discovered in 1989 by Phil Mann and first described by Allen Lowrie in 1990 and placed in the section Erythrorhiza of the subgenus Ergaleium. The species Drosera bulbosa and Drosera macrophylla are considered closely related .