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Species profile—Cyclophyllum costatum


Plantae (plants) → Equisetopsida (land plants) → RubiaceaeCyclophyllum costatum

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Species details

Plantae (plants)
Equisetopsida (land plants)
Scientific name
Cyclophyllum costatum (C.T.White) S.T.Reynolds & R.J.F.Hend.
WildNet taxon ID
Nature Conservation Act 1992 (NCA) status
Environment Protection and Biodiversity Conservation Act 1999 (EPBC) status
Conservation significant
Pest status
Cyclophyllum costatum is a tree growing from 4 to 10 m high, the bark is brown or whitish coloured and is slightly fissured. The branchlets are reddish brown, but usually with a white bloom, the older ones with small, whitish lenticels. The leaves have stipules that are deltoid, keeled and attenuated into a narrow subulate apex 6 to 7 mm long. The petioles are 6 to 7mm long. The leaf blades are elliptic to ovate-elliptic, (4.2-) 7 to 7.7 cm by (1.9-) 3.3 to 4.2 cm with an acute or abruptly obtuse and subacuminate apex. The base is abruptly obtuse or subacute and attenuate into the petiole, glabrous, thick and fleshy but membranous when dry, pale green in colour, glossy on the upper surface and dull on the lower surface. The midrib is slender, slightly sunken on the upper surface and prominently raised on the lower surface. The lateral nerves are in 4 to 7 pairs, are extremely slender and looping at the margins. The flowers are in groups of 1 to 3 on a short, thick, knob like peduncle. They are perfumed, yellow, with a corolla tube 10 mm long, and sparsely hairy inside at the top. The red fruit form on pendulous stalks (pedicels), are two-lobed, laterally compressed, 1 to 1.4 cm long, by 0.6 to 1.4 cm wide, and strongly angled with 8 to 9 ribs (Reynolds and Henderson, 2001).
Cyclophyllum costatum is distinguished by the long, somewhat compressed calyx tube, pedicel wings, strongly ribbed fruits, and membranous leaves when dry. (Reynolds and Henderson, 2001).
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Cyclophyllum costatum is known from the Daintree River, Little Falls Creek northwest of Mossman, Mt Windsor and from a proposed National Park at Bridge Creek Northwest of Cooktown in northeast Queensland. This species occurs within the Daintree National Park, Gadgarra National Park and Mount Windsor National Park. This species occurs within the Wet Tropics (Queensland) Natural Resource Management Region (Queensland Herbarium, 2012).
Distributional limits
-16.2401371, 145.0927727
-16.4151372, 145.4177728
Range derivation
Range derived from extent of the taxon's verified records
Cyclophyllum costatum grows in rainforest and complex notophyll vineforest along creeks and rivers from altitudes from near sea level to 1095 m (Reynolds and Henderson, 2001; Queensland Herbarium 2012).
Cyclophyllum costatum has been observed flowering in May and fruiting in October and December (Queensland Herbarium, 2012).
Status notes
Cyclophyllum costatum is listed as Vulnerable under the Queensland Nature Conservation Act 1992 and Vulnerable under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999
Management recommendations
Regional and local priority actions to support the recovery of Cyclophyllum costatum are outlined by DSEWPC (2012). A summary of these include: avoid habitat loss, disturbance and modification (e.g. monitor known populations to identify key threats; monitor the progress of recovery, including the effectiveness of management actions and the need to adapt them if necessary); increase conservation information (e.g. raise awareness of C. costatum within the local community; maintain liaisons with private landholders and land managers of land on which populations occur); and enable recovery of additional sites and/or populations (e.g. undertake appropriate seed collection and storage) (DSEWPC, 2012).
Department of Sustainability, Environment, Water, Population and Communities (DSEWPC) (2012). Cyclophyllum costatum in Species Profile and Threats Database, Department of Sustainability, Environment, Water, Population and Communities, Canberra. Accessed 25/06/2012.
Queensland Herbarium (2012). Specimen label information. Queensland Herbarium. Accessed 19/01/2012.
Reynolds, S.T. and Henderson, R.J.F. (2001). Vanguerieae A.Rich. ex Dum. (Rubiaceae) in Australia, 2. Cyclophyllum Hook.f. Austrobaileya 6 (1): 1-6.
Profile author
Ronald Booth (05/06/2012)

Other resources

Data source

This profile data is sourced from the QLD Wildlife Data API using the Get species by ID function used under CC-By 4.0.

This information is sourced from the WildNet database managed by the Queensland Department of Environment and Science.

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Last updated
20 May 2024