Skip to main content

Silk oak (Grevillea robusta)

Pohon perak or silk oak (Grevillea robusta) is a species of plant in the Proteaceae, a large, fast-growing evergreen tree with one main trunk, 5-40 m tall, bark dark gray and wrinkled, grows in tropical mountains, rainforests subtropical, dry and wet rainforests.

G. robusta has fern-like leaves, 10-34 cm long, 9-15 cm wide and is divided between 11-31 major lobes and each lobe is sometimes further divided into 4 minor lobes, each linear to narrow triangular. The tree will lose a lot of leaves before flowering.

Dlium Silk oak (Grevillea robusta)


Flowers arranged on one side and sometimes branched with a length of 12-15 cm. The carpel of each flower has a stalk 21-28 mm long. Flowers are bare and mostly yellowish orange or reddish. Flowering in September-November and the following fruit are bald follicles.

Silk oak loves full sun and is drought tolerant. Flowers and fruit contain toxic hydrogen cyanide. Wood is widely used for joints outside windows, furniture, cabinets, fences, musical instruments and shade in plantations.



Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Proteales
Family: Proteaceae
Subfamily: Grevilleoideae
Tribe: Embothrieae
Subtribe: Hakeinae
Genus: Grevillea
Species: Grevillea robusta

Popular Posts

Durian (Durio zibethinus)

Durian ( Durio zibethinus ) is a species of tropical plant in Malvaceae, an annual tree, everlasting green but there are certain times to grow new leaves after the fruiting period is over, popularly called "king of fruit" and considered a controversial fruit where many people like, but some others are even fed up with the scent. D. zibethinus grows to 25-50 m, reddish brown bark and irregular peeling, leafy and stretched canopy. The leaves are oval shaped to lanceolate, 10-15x3-4.5 cm, sitting alternately, stemmed, taper or blunt base and taper-pointed sloping, bright green upper side, the lower side covered with silver or golden scales. Flowers and fruit Flowers appear directly on the trunk or old branches at the proximal, clustered in panicles containing 3-10 florets or flat-shaped florets. Rounded flower buds, 2 cm in diameter and long stem. Tubular petals, 3 cm long, additional petals split into 2-3 round lobes. Crown shaped spatula with a length of 2 times the ...

Japanese morning glory (Ipomoea nil)

Japanese morning glory ( Ipomoea nil ) is a species of plant in the Convolvulaceae family, a climber with twining stems that grow up to 5 meters long. The green, finely hairy leaves are 14 cm long, heart-shaped at the base, entire or 3-5-lobed, tapering at the edges. The flowers are funnel-shaped, blue to reddish-purple with a whitish tube, 5 cm wide and up to 7 cm long. TAXON Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Solanales Family: Convolvulaceae Subfamily: Convolvuloideae Tribe: Ipomoeeae Genus: Ipomoea L. in Sp. Pl.: 159 (1753) Species: Ipomoea nil (L.) Roth in Catal. Bot. 1: 36 (1797) HOMOTYPIC SYNONYMS Convolvuloides triloba Moench in Methodus: 452 (1794) Convolvulus nil L. in Sp. Pl., ed. 2.: 219 (1762) Pharbitis nil (L.) Choisy in Mém. Soc. Phys. Genève 6: 439 (1833 publ. 1834) HETEROTYPIC SYNONYMS Convolvulus caeruleus (Roxb. ex Ker-Gawl.) Spreng. in Syst. Veg., ed. 16. 1: 593 (1824) Convolvulus coelestis G.Forst. in Fl. Ins...

Bugang (Clerodendrum calamitosum)

Bugang ( Clerodendrum calamitosum ) is a species of plant in the Lamiaceae family. It is an erect shrub, growing up to 1 meter tall, with cylindrical, green stems and white hairs. The leaves are opposite. The leaf blade is oval, wavy, with a central main vein with numerous pinnate minor veins, and serrated margins. The leaves are up to 9 cm long and 7 cm wide. The petiole is up to 2 cm long. The flowers are star-shaped, white, up to 3 cm in diameter and up to 6 cm in total length. The fruit is round, dark green, turning black when ripe. TAXON Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Lamiales Family: Lamiaceae Subfamily: Ajugoideae Genus: Clerodendrum L. in Sp. Pl.: 637 (1753) Species: Clerodendrum calamitosum L. in Mant. Pl. 1: 90 (1767) HETEROTYPIC SYNONYMS Clerodendrum fastigiatum (W.Hunter ex Ridl.) H.J.Lam in Verben. Malay. Archip.: 317 (1919) Volkameria alternifolia Burm.f. in Fl. Indica: 137 (1768) Volkameria fastigiata W.Hunter...