Rubber tree (Hevea brasiliensis)

Rubber tree (Hevea brasiliensis) is a plant species in Euphorbiaceae, a tree height of 15-25 m, but in the wild up to 43 m, a large trunk, grows straight and has a high branching above. The stem of this plant contains milk sap which is extracted as the main source of natural rubber.

H. brasiliensis has a cylindrical rod, brown and the inner skin secretes latex if injured. The leaves have three leaflets, arranged in a spiral, elliptical, elongated with a tapered tip, flat edge and bare. The main leaf stalk has a length of 3-20 cm and a minor leaf stalk for 3-10 cm.

Male and female flowers are separate, yellowish and have no petals. The fruit is a capsule that contains three and six seeds according to the amount of space, blackish brown with typical patterned spots and explosively open when ripe.

Rubber trees need a tropical or subtropical climate with a minimum rainfall of 1,200 mm per year and no frost. Tapping is one of the main activities of exploitation of this plant by opening the latex vessels in the bark of the tree so that it can flow quickly.

Latex flow velocity will decrease if the dose of latex liquid on the skin decreases. Rubber skin with a height of 260 cm from the ground surface is a tapping area for income over a period of about 30 years. Tapping must be done carefully so as not to damage the skin and rubber production will be maintained.

Clones are descendants obtained by vegetative propagation of a plant where the characteristics of the plant are exactly the same as the parent. The clones recommended for use when grafting and planting superior seeds by the Indonesian government are GT1, PR107, PR228, PR261, PR300, PR255, PR303, AVROS 2037, and BPMI.

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Malpighiales
Family: Euphorbiaceae
Subfamily: Crotonoideae
Tribe: Heveae
Genus: Hevea
Species: Hevea brasiliensis

Java ruellia (Ruellia treubiana)

Java ruellia ( Ruellia treubiana ) is a species of plant in the Acanthaceae, herbaceous, erect, up to 35 cm tall, cylindrical and green stems, fibrous and white roots. R. treubiana has leaves sitting opposite each other with long stalks up to 1 cm. The leaves are oval, up to 6.5 cm long, up to 4 cm wide, pointed at the tip, a main vein in the middle with many small pinnate veins and flat margins. Fan-shaped flowers with five fins, bluish white, up to 3.5 cm long and up to 2.5 cm wide. This species grows on the forest floor in narrow colonies, under teak forests that tend to be shady, on the edge of puddles, on the edge of roads etc. Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Lamiales Family: Acanthaceae Subfamily: Acanthoideae Tribe: Ruellieae Subtribe: Ruelliinae Genus: Ruellia Species: Ruellia treubiana

Pygmy groundcherry (Physalis minima)

Ceplukan or pygmy groundcherry ( Physalis minima ) is a plant species in the Solanaceae, a pantropical perennial herb, 50 cm high, green in color, grows in wet or semi-wet areas, the fruit is edible and has a pleasant taste, is often used as an anti-cancer, analgesic and anti-inflammatory. P. minima has an erect trunk with many branches, is square with sharp angles, 20-50 cm high, bright green and juicy. The branching produces two or three new stems and becomes the point for producing leaves and fruit. The leaves have a smooth surface, hairless, plain or serrated edges, 2.5-12 cm long, light green color and pointed tips. The stalk is long and continues to be a bone in the center of the leaf with some lateral veins. Bell-shaped flowers with five corners, cream to yellow in color with brown plots on the inside and white pistils. The fruit is yellowish green and packed in a thin covering that turns brown and falls to the ground when ripe. Pygmy groundcherry grows wild in forest edges, ...

Redflower ragleaf (Crassocephalum crepidioides)

Sintrong or ebolo or thickhead or redflower ragleaf ( Crassocephalum crepidioides ) are plant species in Asteraceae, terma height 25-100 cm, white fibrous roots, generally grow wild on the roadside, yard gardens or abandoned lands at altitude 200- 2500 m. C. crepidioides has erect or horizontal stems along the soil surface, vascular, soft, non-woody, shallow grooves, green, rough surface and short white hair, aromatic fragrance when squeezed. Petiole is spread on stems, tubular and eared. Single leaf, spread out, green, 8-20 cm long, 3-6 cm wide, longitudinal or round inverted eggshell with a narrow base along the stalk. Pointed tip, flat-edged or curved to pinnate, jagged rough and pointed. The top leaves are smaller and often sit. Compound flowers grow throughout the year in humps that are arranged in terminal flat panicles and androgynous. Green cuffs with orange-brown to brick-red tips, cylindrical for 13-16 mm long and 5-6 mm wide. The crown is yellow with a brownish red...

Dlium