Ryticaryum longifolium
| Ryticaryum longifolium | |
|---|---|
 | |
| Herbarium specimen | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Icacinales |
| Family: | Icacinaceae |
| Genus: | Ryticaryum |
| Species: | R. longifolium |
| Binomial name | |
| Ryticaryum longifolium | |
| Synonyms[3] | |
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8 synonyms
| |
Ryticaryum longifolium is a species of plant in the family Icacinaceae, native to New Guinea, the Solomon Islands and Cape York Peninsula in Queensland, Australia.
Description
Ryticaryum longifolium is a shrub growing to about 5 m (16 ft) in height. New growth is covered by short brown hairs. The leaves are mostly hairless, up to 18 cm (7.1 in) long and 6 cm (2.4 in) wide. They have between seven and ten lateral veins on either side of the midrib and are attached to the twigs by a petiole about 8 mm (0.31 in) long.[4][5]
Small flowers about 2 mm (0.08 in) long are borne on spikes about 4 cm (1.6 in) long. The fruit is red ovoid drupe about 2 cm (0.8 in) long and 1.5 cm (0.6 in) wide, and contains a single seed.[4][5] This species is dioecious, meaning that pistillate (functionally female) and staminate (functionally male) flowers are borne on separate plants.[6]: 35
Distribution and habitat
This species is mostly found in gallery forest alongside watercourses but may also occur in rainforest; the altitudinal range is from close to sea level up to about 500 m (1,600 ft) in Australia,[5] and up to 1,800 m (5,900 ft) in New Guinea.[6]: 41
Conservation
As of June 2026, this species has been assessed to be of least concern by the International Union for Conservation of Nature (IUCN) and by the Queensland Government under its Nature Conservation Act.[1][7]
Uses
In the Solomon Islands, the leaves are cooked and eaten.[6]: 41
References
- 1 2 Jimbo, T. (2022). "Ryticaryum longifolium". IUCN Red List of Threatened Species. 2022 e.T198575972A202837024. doi:10.2305/IUCN.UK.2022-1.RLTS.T198575972A202837024.en.
- ↑ "Ryticaryum longifolium K.Schum. & Lauterb". Australian Plant Name Index (APNI). Centre for Australian National Biodiversity Research, Australian Government. Retrieved 8 June 2026.
- 1 2 "Ryticaryum longifolium K.Schum. & Lauterb". Plants of the World Online. Royal Botanic Gardens, Kew. 2026. Retrieved 8 June 2026.
- 1 2 Guymer, G.P. (2022). Kodela, P.G. (ed.). "Ryticaryum longifolium K.Schum. & Lauterb". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 8 June 2026.
- 1 2 3 F.A.Zich; B.P.M.Hyland; T.Whiffen; R.A.Kerrigan (2020). "Ryticaryum longifolium K.Schum. & Lauterb". Australian Tropical Rainforest Plants Edition 8 (RFK8). Centre for Australian National Biodiversity Research (CANBR), Australian Government. Retrieved 8 June 2026.
- 1 2 3 Sleumer, H. (1971). "Icacinaceae". In Steenis, C.G.G.J. van; Steenis-Kruseman, M.J. van (eds.). Series I: Spermatophyta. Flora Malesiana. Vol. 7. Djakarta: Noordhoff-Kolff. pp. 1–87.
- ↑ "Taxon - Ryticaryum longifolium". WildNet. Queensland Government. 2026. Retrieved 8 June 2026.
External links
- Map of herbarium collections of this species at the Australasian Virtual Herbarium
- Observations of this species on iNaturalist
- Images of this species on Flickriver.com