Tree dahlia (Dahlia imperialis)

Tree dahlia (Dahlia imperialis) is a plant species in the Asteraceae, a shrub or small tree, grows with upright stems and many branches, produces fan flowers, is bright in color and grows to form colonies at an elevation of 1500-2500 meters.

D. imperialis has a stem up to 8-10 meters high, cylindrical in shape, four corners with swollen nodes, many branches, old stems are brownish green and young stems are reddish green or black.

The leaves have stalks up to 5 cm long, sit in pairs and are green. Leaves are oval, up to 15 cm long, up to 10 cm wide, pointed tip, serrated margins, green, a large vein in the middle and several small pinnate veins.

The flowers have stalks up to 20 cm long and are green with reddish or blackish markings. Flowers are fan-shaped, up to 20 cm wide, 8 pieces, bright blue or reddish blue, the middle segment is bright yellow and circular.

TAXON

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Coreopsideae
Genus: Dahlia Cav. in Icon. 1: 56 (1791)
Species: Dahlia imperialis Roezl ex Ortgies in Gartenflora 12: 243 (1863)

HETEROTYPIC SYNONYMS

Dahlia arborea C.Huber in Rev. Hort. (Paris) 42: 203 (1870)
Dahlia arborea C.Huber in Dahlia arborea: 1 (1870)
Dahlia dumicola Klatt in Compos. Nov. Costaric.: 6 (1895)
Dahlia lehmannii Hieron. in Bot. Jahrb. Syst. 19: 55 (1894)
Dahlia lehmannii var. leucantha Sherff in Amer. J. Bot. 38: 70 (1951)
Dahlia maximiliana T.Moore & Mast. in Gard. Chron., n.s., 12: 216 (1879)
Dahlia maxonii Saff. in J. Wash. Acad. Sci. 9: 371 (1919)

PUBLICATIONS

Matthew, K.M., Flora of Tamil Nadu Carnatic, Vol.3 (1). Diocesan Press, Madras. 1983

Roskov Y. & al. (eds.) (2018). Species 2000 & ITIS Catalogue of Life Naturalis, Leiden, the Netherlands.

Sasidharan, N. 2011. Flowering plants of Kerala. DVD, V 2, KFRI.

VERNACULAR NAME

Chinese (simplified): 树大丽花
Chinese (traditional): 樹大麗花
English: Tree Dahlia, Bell Tree Dahlia
French: Dahlia arborescent
Indonesia: Pohon dahlia, Dahlia
Japanese: キダチダリア
Java: Dahlia
Nepali: रुख लाहुरे Rukh lahure
Polish: Dalia olbrzymia, Dalia drzewiasta
Russian: Георгина величественная
Spanish: Dalia imperial, Dalia catalina

Aryo Bandoro
Dlium TheDlium
YouTube: https://www.youtube.com/@Dlium

Coromandel (Asystasia gangetica)

Coromandel ( Asystasia gangetica ) is a species of plants in Acanthaceae, perennials, vines and branching that are widely found on the edges of roads, shrubs and gardens, resistant to shade, used as fodder, especially cattle, goats and sheep, treatment, conservation of land and ornamental plants. A. gangetica has a height of 88-95 cm, rectangular-shaped stem, brownish green or purplish green, taproot and can emerge from branches. Petiole has a length of 0.5-6 cm. Ellipse-shaped leaves, unifoliate, green or dark green, arranged facing each other and do not have stipules. Leaves have a length of 8.5 cm, width 4.9 cm, area 69.42 cm3, length and width ratio is 1.8:1, heart-shaped base and taper front end, rough surface, flat edge, a main bone and 4 -6 lateral veins on each side. Coromandel produces flowers after 4 weeks to 2 months. Compound flowers, lined up on one side with a length of up to 25 cm. Flower stalks have a length of up to 3 mm. Trumpet type, white with a bottom stran...

Breng (Coldenia breng)

Breng ( Coldenia breng ) is a species of plant in the Boraginaceae family. It is a herbaceous plant that grows along the ground, with radial, cylindrical stems, red, multi-branched, alternate, and white-haired. C. breng has alternate leaves along the stem, oval to nearly round, up to 2.5 cm long, up to 1.5 cm wide, and white-haired. This plant grows in floodplains, seasonally inundated riverbanks, and drying rice fields. It thrives in sandy or silty soils and is drought-tolerant. TAXON Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Boraginales Family: Boraginaceae Subfamily: Cordioideae Genus: Coldenia L. in Sp. Pl.: 125 (1753) Species: Coldenia breng Aryo Bandoro Dlium TheDlium YouTube: https://www.youtube.com/@Dlium

Screw tree (Helicteres isora)

Screw tree ( Helicteres isora ) is a species of plant in the Malvaceae family. It is a shrub or small tree, up to 8 meters tall. It has gray bark and alternate leaves, up to 22 cm long and 17 cm wide, oval in shape, with serrated edges and hairs. The flowers are red or white and reach a total length of 5.5 cm. The fruit is green when unripe, brown or gray when dry, twisted, spiral-shaped, and pointed at the tip. The seeds are black or brown, shiny, and diagonal, triangular, or rectangular. TAXON Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Malvales Family: Malvaceae Subfamily: Helicteroideae Tribe: Helictereae Genus: Helicteres Pluk. ex L. in Sp. Pl.: 963 (1753) Species: Helicteres isora L. in Sp. Pl.: 963 (1753) HETEROTYPIC SYNONYMS Helicteres baruensis var. ovata DC. in Prodr. 1: 476 (1824) Helicteres chrysocalyx Miq. ex Mast. in J.D.Hooker, Fl. Brit. India 1: 365 (1874) Helicteres corylifolia Buch.-Ham. ex Dillwyn in Rev. Hortus Malab....

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