Ajuga L.

Ajuga novoguineensis A.J.Paton & R.J.Johns

This species is accepted, and its native range is W. New Guinea (Kemabu Plateau).


A. J. Paton, & Johns, R. (2004). A New High Altitude Species of Ajuga, A. novoguineensis (Lamiaceae) from the Kemabu Plateau, Papua. Contributions to the Flora of Mt Jaya, XII. Kew Bulletin, 59(1), 153-155. doi:10.2307/4111092

EN B1 a, b (ii,iv). This species is probably endangered. It is known from only a single collection. Although little work has yet been done on the flora of the Kemabu Plateau, the species has not been recorded to the south of the main divide of New Guinea (which is comparatively well collected), nor from Lake Habbema or Mt Trikora to the NE of Mt Jaya despite the extensive collections of L. J. Brass in 1938 - 1939 and P. Mangen in 1991 - 1992 in these areas. This suggests that the extent of occurrence of this species is less than 500 km2. A possible threat is that the area is frequently subjected to both natural fires and fires lit by traditional groups during hunting. This results in considerable destruction of the subalpine vegetation particularly in association with extreme El Niño events and can result in several centimetres of peaty top soil being burnt. The accessibility by traditional hunters to the Kemabu Plateau, due to the development of the adjacent mine site, has increased the frequency of burning in the subalpine and alpine grasslands of the area. The reduction in time between fires is likely to be a threat to the herbaceous flora. It is possible that Ajuga novoguineensis has an underground, fire resistant rootstock or tuber, but such structures are seldom recorded for any high altitude species from New Guinea. The underground parts of A. novoguineensis have not been collected, but its closest relatives all lack such structures.
Endemic to the Kemabu Plateau, Mt Jaya, Papua. This species is known only from the southern regions of Kemabu Plateau below the North Wall of Mt Jaya.
In soggy area of open subalpine tussock grassland at 3420 m.
Morphology General Habit
Perennial herb to 8 - 10 cm tall, villose
Morphology Leaves
Leaves opposite, elliptic, 1.5 - 2 x 1 - 1.4 cm; margins crenate- serrate, densely villose on both surfaces; petiole to 0.4 cm long
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, shortly exserted, attached to corolla tube between mid-point and throat
Morphology Reproductive morphology Flowers Calyx
Calyx campanulate, 4- 5 mm long, pilose; teeth 5, more or less equal, triangular
Morphology Reproductive morphology Flowers Corolla
Corolla pink, 0.8 - 1 cm long, persistent, the upper lip ascending, bifid, 1- 2 mm long, the lower lip spreading, 3 mm long, 3-lobed, middle lobe largest and emarginate at apex
Morphology Reproductive morphology Flowers Gynoecium Style
Style apex bifid
Morphology Reproductive morphology Fruits
Nutlets (immature) reticulate.
Morphology Reproductive morphology Inflorescences
Inflorescence with single flowers in axils of leaf-like bracts, rachis villose
New Guinea, Papua, Kemabu Plateau, alt. 3420 m, 4 March 1972, G. S. Hope ANU 16107 (holotypus CANB! unicate; photo. K).

Native to:

New Guinea

Ajuga novoguineensis A.J.Paton & R.J.Johns appears in other Kew resources:

First published in Kew Bull. 59: 154 (2004)

Accepted by

  • Bramley, G.L.C. (2019). Flora Malesiana 23: 1-444. Noordhoff-Kolff N.V., Djakarta.
  • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.


Kew Bulletin

  • --- (1978). Labiatae. Fl. Malesiana ser. I, 8: 301- 394.
  • Harley, R. M., Atkins, S., Budantsev, A., Cantino, P. D., Conn, Grayer, R. J., Harley, M. M., De Kok, R., Krestovskaja, T., Morales, A., Paton, A. J., Ryding, O. & Upson, T. (2004). Labiatae. In: J. W. Kadereit (vol. ed.), K. Kubitzki (general ed.), The Families and Genera of Vascular Plants, vi (Lamiales). Springer, Berlin.
  • Hope, G. S., Peterson, J. A., Radok, U. & Allison, I. (eds.) (1976). The equatorial glaciers of New Guinea. A. A. Balkema, Rotterdam.
  • Keng, H. (1969). Flora Malesiana Precursores XLVII A revision of Malesian Labiatae. Gard. Bull. Straits Settlem. 26: 13-180.
  • Li, X. & Hedge, I. C. (1994). Ajuga. In: C. Y Wu & P. H. Raven (eds.), Flora of China 17: 63-69. Science Press, Beijing & Missouri Botanical Garden, St Louis.
  • Wu, C. Y & Li, H. W. (1977). Labiatae. In: Flora Reipublica Popularis Sinicae 65 (2): 1 – 649.

  • Kew Backbone Distributions

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    © Copyright 2017 World Checklist of Selected Plant Families.

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  • Kew Names and Taxonomic Backbone

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at and
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.