Girish Mahajan

Helanthium tenellum

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Kingdom  Plantae
Family  Alismataceae
Scientific name  Helanthium tenellum
Rank  Species
Order  Alismatales
Genus  Helanthium
Higher classification  Helanthium
Helanthium tenellum Helanthium tenellum In Vitro Cup aquariumplant Onlineaquariumspullen
Similar  Echinodorus, Echinodorus grisebachii, Helanthium, Hemianthus callitrichoides, Cryptocoryne

Helanthium tenellum submers und emers


Helanthium tenellum is species of plants in the Alismataceae. It is native to the eastern United States (from Texas to Florida, north to Michigan and Massachusetts), southern Mexico (Chiapas, Veracruz), West Indies (Cuba, Jamaica, Hispaniola), Central America, South America (from Guyana to Argentina)

Contents

Helanthium tenellum Helanthium tenellum Flowgrow Aquatic Plant Database

Evoluci n del tapizado de mi acuario con helanthium tenellum green


Description

Helanthium tenellum Helanthium tenellum quotparvulumquot Flowgrow Aquatic Plant Database

The leaves of H. tenellum are narrowly elliptical or lanceolate. At different times during the plant's life cycle, the blade of the leaf is scarcely distinguishable from the petiole, while at other times the petiole is 10 to 15 times as long as the blade, which may be 1–4 cm long and 0.2–1 cm wide, with a pointed tip. The base is decurrent to the petiole and has between one and three veins.

Helanthium tenellum httpswwwflowgrowdedbimagesaquaticplantsde

The stem is thin, erect, often curved, and may be 3–20 cm long. In small plants, the stem ends in a single inflorescence (umbel or coil); in larger plants the inflorescence is racemose, composed of two whorls placed one above the other. Bracts are free and 2–6 mm long in the first whorl. Pedicels are 1–3.5 cm long. Sepals are 3 mm long, membraneous, and usually have five fine ribs. During ripening, the sepals enlarge and reach a length of up to 6 mm and fully cover the aggregate fruit. A specimen may have six to nine stamens, each about 1 mm long. Anthers are 0.25 mm wide by 2.25 mm long, which is three times shorter than the filaments. It may have sixteen to eighteen pistils. The achenes are compressed, and arched in the apical part; they are (0.9) – 1.1 – (1.3) mm long, and black, with three lateral ribs. The basis of the stylar beak is under the level of the tip of the nutlet and may be 0.1–0.3 mm long.

Helanthium tenellum Helanthium tenellum Aquatic Plants Species Profiles TFH Magazine
Helanthium tenellum Helanthium tenellum Pygmy chain sword
Helanthium tenellum Helanthium tenellum Pygmy chain sword

References

Helanthium tenellum Wikipedia


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Cryptocoryne
Echinodorus
Echinodorus grisebachii
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