Dwarf spear blade

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Dwarf spear blade
Dwarf spear blade

Dwarf spear blade

Systematics
Monocots
Order : Frog-spoon-like (Alismatales)
Family : Arum family (Araceae)
Genre : Spear blades ( Anubias )
Type : Broad-leaved spear blade ( Anubias barteri )
Variety : Dwarf spear blade
Scientific name
Anubias barteri var. Nana
( Engl. ) Crusio

The dwarf Speerblatt ( Anubias barteri var. Nana ) is a marsh plant from the family of the arum family (Araceae). It is a popular aquarium plant .

Appearance

The dwarf spear leaf is a perennial herbaceous plant that creeps on long, approximately one centimeter thick rhizomes . The leaf stalks of the plant are three to eight inches long and up to 3 millimeters wide. They encompass the rhizome and are slightly to severely kinked about 1 centimeter below the base of the leaf. The leaf blades are narrowly ovate to broadly lanceolate, heart-shaped; they are dark green in color and can grow up to four inches long and four inches wide. The edge of the leaf is slightly wavy, especially on older leaves. This is caused by the more strongly developed secondary veins on the underside of the leaf.

With good growth conditions, the rhizome forms an inflorescence five to 40 centimeters long . The typical Arum spathe is wide open to maturity and bent back. The white flower bulb is about 1.5 centimeters long.

Chromosome number

The number of chromosomes is 2n = 48.

Distribution area and habitat

This variety has its natural range in Cameroon . So far it has only been found near the town of Limbe , where it grew in a fast flowing river. At the moment the only place of discovery is the Limbé river on the coast near the Cameroon Mountain ; there this variety grows almost only submerged , both in the rainy and dry season .

Use in the aquarium hobby

The dwarf spear blade is very often offered in the trade for planting aquariums . Since plants of this variety stay small and grow only slowly, it is recommended above all for planting in the foreground. She has a reputation for being an undemanding and easy-to-care-for species. It tolerates soft to hard water and requires a water temperature between 20 and 28 degrees Celsius. Low to medium light is sufficient. It can cope with small amounts of carbon dioxide in the water, but grows best with an addition of up to 20 milligrams per liter of aquarium water.

The dwarf spear blade is suitable for greening roots and stones, on which it is attached with a fishing line. It can also be pulled on a hard foam rear wall. When planting in the substrate, make sure that the rhizome is above the gravel layer. Specimens that are set too low only grow slightly. On the other hand, it can also be kept floating in the aquarium and is therefore often used in breeding tanks that have no substrate.

The leaves are very hard; herbivorous fish and snails rarely attack them. The plant is therefore particularly popular for cichlid tanks.

The dwarf spear blade also grows well above water.

Individual evidence

  1. ^ Tropicos. [1]
  2. ^ W. Crusio: A revision of Anubias Schott (Araceae). (Primitiae Africanae XII) . In: Mededelingen Landbouwhogeschool Wageningen . 79, No. 14, 1979, pp. 1-48.
  3. ↑ Crusio WE: The genus Anubias SCHOTT (Araceae) . In: AquaPlanta . Special Issue, No. 1, 1987, pp. 1-44.

literature