Drosera sessilifolia

Drosera sessilifolia dia zavamaniry kely Amerikana Tatsimo manana ravin-kazo miloko mavo sy voninkazo mavokely-lila, ao anaty ala dia zavamaniry iray taona izay miaina mandritra ny vanim-potoanan'ny orana tokana izy.

Drosera sessilifolia forms a rosette of small, wedge-shaped to round carnivorous leaves. The leaves are usually yellowish and become redder with age. Plants are usually 1 to 2 cm across, and the largest wild rosettes recorded measured 4.5 cm.

The tiny flowers have pink-lilac or light lilac petals, and the sepals are often covered with short, stiff red hairs. The flower stalks are usually 5 to 8 cm tall and do not curve at the base, although one stalk 52 cm tall has been recorded.

It is very similar to its closest relative, Drosera burmannii, and the two make up section Thelocalyx. D. sessilifolia generally has rounder leaf blades and wider, shorter petioles, while D. burmannii has wedge-shaped, almost triangular leaves. Flower color does not separate them reliably, because some D. burmannii also have pink flowers. Both species have five styles that divide at the tip, unlike the other sundews of the Americas.

Faritra teratany: Brezila, Venezoela ary Guyana

Zone toetr'andro: Tropical, misy vanim-potoana mangatsiaka sy mangatsiaka

D. sessilifolia grows in sandy or gravelly soils in seasonal seepages, where a thin film of water covers the sand during the rainy season; at the edges of these seepages it also grows in drier sandy or gravelly soil. It has been recorded from about 150 m altitude in the Pantanal floodplain up to about 1,200 m at Chapada dos Veadeiros. In Brazil it is known from many states, from Minas Gerais and Goiás to the northeast coast, where it grows near the freshwater pools that form among sand dunes in the wet season. It lives where the wet and dry seasons are very distinct.

Habe matotra: Ny halavan'ny ravinkazo dia 1-2 cm (hatramin'ny 4.5 cm); ny halavan'ny voninkazo dia 5-8 cm

Taham-pitomboana: Fast

Karazana fandrika: Fandrika Flypaper

Toy ny ovy hafa, manana taova mifono tratra ny ravina, izay mampihetsika sy mitahiry bibikely kely ny tavoahangy miloko mena, avy eo mivoaka ny enzymes izay mihinana ny biby, ary ny ravina no mandray ny sakafo.

In the wild it grows, flowers, sets seed and dies within one rainy season; the seed sprouts with the next rains.
In seepages its seed germinates under a film of water and algae, so seedlings are often seen still submerged.
It and Drosera burmannii are the only two species in section Thelocalyx.
A hybrid with D. burmannii was made in cultivation in 1994 and called D. x thelocalyxiana.
Seed sold as D. sessilifolia before 2009 was sometimes D. burmannii or a hybrid.

Ny mpahay zavamaniry frantsay Auguste de Saint-Hilaire nahita Drosera sessilifolia tao andrefan'i Minas Gerais, Brezila, akaikin'ny renirano São Francisco, ary nanazava azy tamin'ny 1824. George Bentham nanazava Drosera dentata avy any Guyana tamin'ny 1842, ary Ludwig Diels nanampy azy ho toy ny mitovy amin'ny D. sessilifolia tao amin'ny monograph 1906 ny Droseraceae. tamin'ny 1996 ny Brazilian botanist Fernando Rivadavia nanazava ny mahita azy ao anaty ala rehefa avy ny fitsangatsanganana maro, satria ny zavamaniry efa maty tany amin'ny vanim-potoana mangatsiaka.

1. Drosera sessilifolia, Wikipedia
2. Rivadavia, F. (1996). Drosera sessilifolia. Carnivorous Plant Newsletter 25(1): 26-29
3. Growing Drosera burmannii and D. sessilifolia, International Carnivorous Plant Society
4. Growing Subtropical Drosera, International Carnivorous Plant Society
5. Drosera, Wikipedia