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This species is accepted, and its native range is W. Sumatera.


Utami, N. Kew Bull (2012) 67: 731.

Type: Indonesia, Sumatra, BatangPangean Natural Reserve, DedenGirmansyah 1534 (holotype BO!).
Perennial herbs, up to 80 cm tall; stems ± erect, glabrous
Leaves alternate, crowded on the upper part of the stem; lamina ovate to elliptic, 75 – 110 × 25 – 40 mm, coriaceous, base long cuneate, margin acutely serrate, apex acuminate; petiole 20 – 55 mm long; Inflorescences 2 – 8-flowered; terminal, flowers yellow with red spot
Peduncles c. 40 mm long
Bracts ovate, c. 5 × 15 mm, acute, pale green
Pedicels c. 35 mm long, lateral sepals 2, ovate, c. 7 × 10 mm, pale yellow-orange, glabrous
Lower sepal deeply navicular, c. 20 × 28 mm, yellow with a red spot inside, abruptly constricted into a curved spur, c. 15 mm long, reddish yellow, glabrous
Dorsal petal slightly cucullate, broadly obovate, c. 5 × 14 mm, strongly reflexed in the upper half, yellow with red blotches Lateral petals united, upper part of each pair broadly ovate, short-apiculate at apex, c. 8 × 10 mm, yellow mixed with red spot, lower part of each pair lanceolate, c. 6 × 51 mm, yellow mixed with red spot
Ovary glabrous
Fruit a capsule, fusiform, c. 7 × 22 mm.
Endemic to Indonesia: West Sumatra. Only found in BatangPangean Natural Reserve, Sijunjung District (00°43′18″S, 101°074′18″E).
Present on limestone; alt. c. 400 m.
Flowering May – Oct.
Data Deficient (DD) following IUCN (2001) criteria. This species was collected from one locality, where it was growing in a small population. More data regarding the populations are needed.
Impatiens tribuana is closely related to I. laumonieri T. Shimizu but can be distinguished by the dorsal petal which is reflexed/folded in the upper half, the yellow lower sepal with a red spot inside and the presence of two lateral sepals only; I. laumonieri has an orbicular dorsal petal, and four lateral sepals. The species epithet tribuana refers to the three elements: land, sea and air in which a special forces soldier must operate, in honour of TNI-KOPASSUS.

Native to:


Impatiens tribuana Utami & Nurainas appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Aug 7, 2012 Laumonier, Y. [4311], Sumatera K000675641 isotype

First published in Kew Bull. 67: 732 (2012)


Kew Bulletin

  • Utami , N. (2011). Impatiens kunyitensis (Balsaminaceae), a new species from Sumatra, Indonesia. Kew Bull. 66: 187 – 190.CrossRefGoogle Scholar
  • Utami , N. (2009). Impatiens rubricaulis (Balsaminaceae), a new species of Impatiens (Balsaminaceae) from west Sumatra. Reinwardtia 13: 93 – 94.Google Scholar
  • Utami , N. (2005). Two new species of Impatiens (Balsaminaceae) from Batanggadis National Park, North Sumatra, Indonesia. Blumea 50: 443 – 46.CrossRefGoogle Scholar
  • IUCN (2001). IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Commission, Gland and Cambridge.Google Scholar
  • Shimizu, T. & Utami, N. (1997). Three new species of Impatiens (Balsaminaceae) added to Flora Malesiana. Kew Bull. 52: 435 – 442.CrossRefGoogle Scholar
  • Grey-Wilson, C. (1989). A revision of Sumatran Impatiens. Studies on Balsaminaceae VII. Kew Bull. 44: 67 – 106.CrossRefGoogle Scholar

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