Bertya gummifera

Bertya gummifera, [4] is a sticky shrub[4] in the family Euphorbiaceae, endemic to New South Wales.[4][5] [6] It grows in woodland and often in sandstone areas.[4] It flowers in spring.[4]

Bertya gummifera
Dandry Gorge, in the Pilliga, NSW
Tab XVI A[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Euphorbiaceae
Genus: Bertya
Species:
B. gummifera
Binomial name
Bertya gummifera
Occurrence data from Australasian Virtual Herbarium
Synonyms[3]

Bertya gummifera var. genuina Müll.Arg.
Bertya neglecta Dümmer
Bertya polymorpha var. mitchelliana Baill.
Croton gummifer A.Cunn. ex Planch.

Description
Male flower

Bertya gummifera is a sticky shrub, growing from 1-2 m high.[4] The young growth is covered long whitish hairs, which sometimes persist on the stems, but most of the plant loses these and becomes rough and hairless with age.[4] The rough-surfaced leaves are 10-50 mm long and about 2 mm wide, and have margins which are rolled downwards from the upper surface (revolute). The flowers (with and without stalks) are crowded, and have 5-8 bracts. The male flowers have triangular outer bracts which are shorter and less broad than the inner bracts and the perianth segments are about 4 mm long and a reddish brown. The female flowers have narrower bracts, and their perianth segments enlarge and enclose the fruit.

The capsule is up to 12 mm long and about 7 mm in diameter.[4] The species was first described as Bertya gummifera by the botanist Jules Émile Planchon in 1845.[1][2]

References
  1. Planchon, J.E. in Hooker, W.J. (1845) Description de deux genres nouveaux de la famille des Euphorbiacees. London Journal of Botany 4: 473, t. 16A
  2. "Bertya gummifera". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.. Accessed 22 June 2019.
  3. Govaerts, R. et. al. (2019) Plants of the world online: Bertya gummifera. Board of Trustees of the Royal Botanic Gardens, Kew. Accessed 22 June 2019.
  4. "Bertya gummifera R.Br". PlantNET – FloraOnline. National Herbarium of NSW. Retrieved 2019-06-22.
  5. "Bertya gummifera – Occurrence records". The Australasian Virtual Herbarium. Council of Heads of Australasian Herbaria. Retrieved 2019-06-22.
  6. Barrett, R. (2017) Bertya gummifera. In: Flora of Australia. Australian Biological Resources Study, Department of the Environment and Energy, Canberra. Accessed 22 June 2019.


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