Madagascar periwinkle (Catharanthus roseus)

Madagascar periwinkle or tapak dara (Catharanthus roseus L. G.Don) is an annual shrub that lives wild or cultivated in open places in various tropical regions, but can also grow in a rather shady place. Shrub habitus grows sideways and is 0.2 meters to 1 meter high.

This beautiful plant in Indonesia is called tapak dara, Malaysians know it as kemunting cina, in the Philippines as tsitsirika, in Vietnam as hoa hai dang, in China known as chang chun hua, in England as rose periwinkle, and in the Netherlands as a soldaten bloem.

C. roseus has a beautiful flower appearance and is similar to frangipani flowers, round and diameter shaped stems are small, branched, woody stems and downy leaves. Flowers have red, pink, blue, white and others.

These plants can live wildly on any land including clay, sand and rocks. It grows and spreads rapidly during the rainy season where the wake flowers bloom on dewy mornings. This flower plant bursts and appears to be striking between the surrounding grasses.

The leaves are ovoid, about 2 cm to 6 cm long, 1 cm to 3 cm wide, green, and pinned pinned together. The leaves are about 2-6 cm long, 1-3 cm wide. The stalk is very short and the leaves contain white latex.

Flowers grow axially or arise from the armpit of leaves, flower petals and nail-shaped. Trumpet shaped crowns, widened ends, white, blue, pink or purple depending on the cultivar. The fruit is cylindrical with a pointed tip, hairy, 1.5 cm to 2.5 cm long, and has many seeds.

Flowers and leaves contain vincristine, vinblastine, reserpine, ajmalicine, and serpentine. Other contents are catharanthine, leurosine, norharman, lochnerine, tetrahydroalstonine, vindoline, vindolinine, akuammine, vincamine, vinleurosin, and vinrosidine.

Kingdom: Plantae
Kingdom: Embryophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Apocynaceae
Genus: Catharanthus
Species: C. roseus

Cockspur coral tree (Erythrina crista-galli)

Velvet coral tree or cockspur coral tree ( Erythrina crista-galli ) is a species of plant in the Fabaceae family. It is a small tree, 5-8 meters tall, with a trunk circumference of about 50 cm, irregular branches, light wood, and fissured, soft, and light brown bark. The taproot is white. The leaves are ovate, with three strands, dark green and glossy on the upper surface, and pale green on the underside. The central lobe is up to 17 cm long and up to 11 cm wide. The left and right lobes are up to 15 cm long and up to 10 cm wide. The flowers are red, arranged in racemes, at the apex, pentameric, complete, and bilaterally symmetrical. The flowers are up to 6 cm long and 4 cm wide. The pods are long, containing about 8 seeds, green when young and turning brown as they mature. The seeds are ovate, flat, and brown. It grows well in lowlands up to an elevation of 1,500 meters, with an annual rainfall of 800-1,500 mm/year, and a temperature of 20-32°C. It thrives in well-drained soils, but...

Tanglehead (Heteropogon contortus)

Tanglehead ( Heteropogon contortus ) is a species of Poaceae, an erect grass, up to 65 cm tall, with leaves up to 13 cm long and 0.5 cm wide. The inflorescence is at the top and hairy. The tip is black. This plant forms dense colonies in forests, agricultural lands, roadsides, and abandoned areas. TAXON : Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Liliopsida Order: Poales Family: Poaceae Subfamily: Panicoideae Tribe: Andropogoneae Subtribe: Anthistiriinae Genus: Heteropogon Pers. in Syn. Pl. 2: 533 (1807) Species: Heteropogon contortus (L.) P.Beauv. in J.J.Roemer & J.A.Schultes, Syst. Veg., ed. 15[bis]. 2: 836 (1817) HOMOTYPIC SYNONYMS : Andropogon contortus L. in Sp. Pl.: 1045 (1753) Heteropogon contortus var. hirtus Hack. in C.F.P.von Martius & auct. suc. (eds.), Fl. Bras. 2(3): 267 (1883) Heteropogon hirtus Pers. (1807) Holcus contortus (L.) Stuck. in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 48 (1904) Sorghum contortum (L.) Kuntze in Revis. Gen. ...

Humpback whales (Megaptera novaeangliae) manufacture bubble-nets as tools to increase prey intake

NEWS - Humpback whales ( Megaptera novaeangliae ) create bubble net tools while foraging, consisting of internal tangential rings, and actively control the number of rings, their size, depth and horizontal spacing between the surrounding bubbles. These structural elements of the net increase prey intake sevenfold. Researchers have known that humpback whales create “bubble nets” for hunting, but the new report shows that the animals also manipulate them in a variety of ways to maximize catches. The behavior places humpbacks among the rare animals that make and use their own tools. “Many animals use tools to help them find food, but very few actually make or modify these tools themselves,” said Lars Bejder, director of the Marine Mammal Research Program (MMRP), University of Hawaii at Manoa. “Humpback whales in southeast Alaska create elaborate bubble nets to catch krill. They skillfully blow bubbles in patterns that form a web with internal rings. They actively control details such ...

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