Beach sheoak (Casuarina equisetifolia)

Cemara laut or beach sheoak (Casuarina equisetifolia) is a species of plant in the Casuarinaceae, an evergreen tree with a height of 6-35 meters, the leaves consist of slender twigs, many green to gray-green branches with a diameter of 0.5-1 mm, scaly leaves. small in 6-8 circles.

C. equisetifolia has small catkin-like inflorescences, male flowers with simple spikes and 0.7-4 cm long, female flowers with short stalks.

The fruit is an oval woody structure 10-24 mm long, 9-13 mm in diameter, resembling a conifer cone consisting of many carpels and each containing one small seed with a wing length of 6-8 mm.

The ripe fruit is brown and opens to disperse the seeds in the water. The seeds can only grow in hot sand near the beach. The seeds sprouted and formed a thicket.

Beach sheoak is used as a bonsai object and an ornamental plant in urban areas. The wood is used for shingles, fencing, firewood, erosion prevention and windbreak elements.

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Fagales
Family: Casuarinaceae
Genus: Casuarina
Species: Casuarina equisetifolia
Subspecies: Casuarina equisetifolia ssp. equisetifolia, Casuarina equisetifolia ssp. incana

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

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Jomblang Cave

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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. ...

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