Earleaf acacia (Acacia auriculiformis) is acacia species in Fabaceae, endemic in Papua and Papua New Guinea, growing at an altitude of 0 to 400 meters above sea level at warm temperatures and able to live in rainfall is very low at 200 mm/year on soils pH 4-9.
A. auriculiformis grows well on damaged land and is able to fix nitrogen. Very tolerant of environmental stress, barren and marginal land, clay, high salinity or waterlogged. Evergreen tree despite the dry season where other plants have shed leaves. Growth of up to 30 meters and diameter of 80 cm.
Akasia has a phylum where leaves are incomplete without leaf strands, but leaf stems will widen. Trees have phylaxis with scattered types where the phylogens bend like auricles which form the basis for identification of this species. Venation in the phyla is dominant in the longitudinal direction, 10-20 cm long and 2-6 cm wide.
Flowers are in the form of grains, short-stemmed and a grain can consist of 50-100 small yellow flowers. Grains have a length of 10-15 cm. The fruit in the pod contains 2-5 seeds, brownish black and shiny. In Indonesia, wood production is 15-20 m3/ha/year for a 10-12 year rotation period.
Kormis is a fast growing woody plant, suitable for forest restoration or planted in industrial plantations to produce large biomass in a short time. Earleaf acacia has been planted to fire support, control erosion and mixed crops in agroforestry activities, industrial waste processors and restoration of ex-mining land.
TAXON
Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Fabales
Family: Fabaceae
Subfamily: Mimosoideae
Genus: Acacia
Subgenus: Juliflorae Mill. in Gard. Dict. Abr., ed. 4.: [s.p.] (1754)
Species: Acacia auriculiformis A.Cunn. ex Benth. in London J. Bot. 1: 377 (1842)
HOMOTYPIC SYNONYMS
Racosperma auriculiforme (A.Cunn. ex Benth.) Pedley in Bot. J. Linn. Soc. 92: 247 (1986)
PUBLICATIONS
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Gosline, G., Bidault, E., van der Burgt, X., Cahen, D., Challen, G., Condé, N., Couch, C., Couvreur, T.L.P., Dagallier, L.M.J., Darbyshire, I., Dawson, S., Doré, T.S., Goyder, D., Grall, A., Haba, P., Haba, P., Harris, D., Hind, D.J.N., Jongkind, & al. (2023). A Taxonomically-verified and Vouchered Checklist of the Vascular Plants of the Republic of Guinea. Nature, scientific data 10, Article number: 327: [1]-[12].
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Isely, D. (1998). Native and Naturalized Leguminosae (Fabaceae) of the United States: 1-1007. Monte L. Bean Life Science Museum. Brigham Young University, Provo, Utah.
Kitalong, A.H., DeMeo, R.A. & Holm, T. (2008). Native Trees Palau. A field guide: 1-236.
Kotiya, A., Solanki, Y. & Reddy, G.V. (2020). Flora of Rajasthan: 1-769. Rajasthan state biodiversity board.
Kumar, S. & Sane, P.V. (2003). Legumes of South Asia. A Checklist: 1-536. Royal Botanic Gardens, Kew.
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Meena, S.L. (2012). A checklist of the vascular plants of Banaskantha district, Gujarat, India. Nelumbo 54: 39-91.
Nurtjahya, E. & al. (2026). Flowering Plants of Bangka Island: Native and Introduced. Acta Botanica Hungarica 68: 127-156.
Pandey, R.P. & Dilwakar, P.G. (2008). An integrated check-list flora of Andaman and Nicobar islands, India. Journal of Economic and Taxonomic Botany 32: 403-500.
Prakash, L. & Balasubramanian, P. (2018). Invasive alien flora of Sathyamangalam Tiger Reserve in Southern Eastern Ghats, India. Indian Forester 144: 857-862.
Sanjappa, M., Pusalkar, P.K. & Mao, A.A. (eds.) (2024). Flora of India 6: 1-556. Botanical Survey of India.
Singh, A. (2012). Exotic flora of the Chandauli district Uttar Pradesh, India: an overview. Indian Journal of Forestry 35: 79-84.
Sykes, W.R. (2016). Flora of the Cook Islands: 1-973. National Tropical Botanical Garden, Hawaii.
Vikraman, R/R/, Pandurangan, A.G. & Thulasidas, G. (2008). A study on the garden escaped exotics of Thiruvananthapuram district, Kerala. Journal of East African Natural History 32: 765-781.
Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 10: 1-642. Science Press (Beijing) & Missouri Botanical Garden Press (St. Louis).
Zhu, X.Y., Zhang, R.P. & He, Y.L. (eds.) (2021). An inventory of legume species diversity of Myanmar: 1-297. China Minzu university press.
de Lourdes Rico-Acre, M. (2007). A checklist and synopsis of American species of Acacia (Leguminosae: Mimosoideae): 1-207. CONABIO, México D.F.
VERNACULAR NAME
Chinese (simplified): 大叶相思 - 耳叶相思树
Chinese (traditional): 耳莢相思樹 - 耳果相思 - 耳葉相思
English: Kormis, Acacia formis, Earpod wattle, Black wattle, Common acacia, Ear-pod wattle, Northern black wattle, Darwin black wattle
Filipino: Kormis
Finnish: Korva-akaasia
Java: Kormis
Malaysia: Kormis
Russian: Акация ушковидная
Thai: กระถินณรงค์
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