Asian water hyacinth (Pontederia hastata)

Asian water hyacinth (Pontederia hastata) is a species of plant in the Pontederiaceae, herbaceous, aquatic, erect, growing in colonies in wet environments with freshwater bodies, lakes, swamps, rivers and agricultural land and abandoned lands.

P. hastata is up to 120 cm tall, cylindrical leaf stalks and green in color. Leaves are heart-shaped or arrow-shaped, up to 25 cm long, up to 21 cm wide, green and thick.

Inflorescences in panicles and grow on leaf stalks. Fan-shaped flowers, up to 3 cm wide, six-winged, blue in color, white stamens and yellow pollen. Flower stalks up to 3 cm long and white.

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Liliopsida
Order: Commelinales
Family: Pontederiaceae
Genus: Pontederia
Subgenus: Monochoria
Species: Pontederia hastata

Six new species forming the Sumbana species group in genus Nemophora Hoffmannsegg 1798 from Indonesia

NEWS - Sumbawa longhorn ( Nemophora sumbana Kozlov, sp. nov.), Timor longhorn ( Nemophora timorella Kozlov, sp. nov.), shining shade longhorn ( Nemophora umbronitidella Kozlov, sp. nov.), Wegner longhorn ( Nemophora wegneri Kozlov, sp. nov.), long brush longhorn ( Nemophora longipeniculella Kozlov, sp. nov.), and short brush longhorn ( Nemophora brevipeniculella Kozlov, sp. nov.) from the Lesser Sunda Islands in Indonesia. The Lesser Sunda Islands consist of two parallel, linear oceanic island chains, including Bali, Lombok, Sumbawa, Flores, Sumba, Sawu, Timor, Alor, and Tanimbar. The oldest of these islands have been continuously occurring for 10–12 million years. This long period of isolation has allowed significant in situ diversification, making the Lesser Sundas home to many endemic species. This island chain may act as a two-way filter for organisms migrating between the world's two great biogeographic regions, Asia and Australia-Papua. The recognition of a striking cli...

Black nightshade (Solanum nigrum)

Ranti or black nightshade ( Solanum nigrum ) is a species of plant in the Solanaceae, shrub and short-lived, stems erect or lying on the ground, berries have a black color when ripe, grows in forests, agricultural land and disturbed habitats. S. nigrum has stems erect or lying at ground level, 30–120 cm (12 to 47 in) long, branched, tubular with several linear grooves forming a cone, green and white-haired. Leaves are elliptical to heart-shaped, 4-7.5 cm long, 2-5 cm wide, pinnate base, pointed or blunt tip, wavy edge or large toothed, dark green upper side, pale underside, hairy or hairless and has a stalk with a length of 1-3 cm. Flowers have greenish to whitish petals, curved when old and surrounded by bright yellow anthers. The berries are mostly 6-8 mm in diameter and are green then turn dull black or black purple or red. Black nightshade grows well with a soil pH of 5.5-6.5 and is rich in organic matter. It is difficult to grow under conditions of high temperature and high hum...

Purwaceng (Pimpinella pruatjan)

Purwaceng or purwoceng or antanan gunung or Viagra of Java ( Pimpinella pruatjan or Pimpinella priatjan ) are small termas growing horizontally in Apiaceae, growing in villages on Dieng Plateau, Central Java Province, Indonesia, at 1,500 to 2,000 meters above sea level, the roots have medicinal properties for aphrodisiacs and are usually processed in powder form for a mixture of coffee or milk. P. pruatjan grows flat on the ground but does not propagate, small leaves are reddish green for 1-3 cm in diameter. This plant is only found in Java and grows in high mountain areas. A low population where industrial demand is very high results in increasingly scarce. Another place that is likely to become a purwaceng habitat is the Iyang Mountains and the Tengger Mountains in East Java Province. Efforts to multiply and cultivate have a big problem where these plants have difficulty producing seeds. In vitro propagation research through tissue cultivation has been carried out to overcome ...

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