Acacia obtusifolia
| Stiff leaf wattle | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Caesalpinioideae |
| Clade: | Mimosoid clade |
| Genus: | Acacia |
| Species: | A. obtusifolia
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| Binomial name | |
| Acacia obtusifolia | |
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| Range of Acacia obtusifolia | |
| Synonyms[1] | |
Acacia obtusifolia, commonly known as stiff-leaf wattle or blunt-leaf wattle, is a perennial tree in subfamily Mimosoideae of family Fabaceae.
Description
[edit]Acacia obtusifolia is an upright or spreading perennial tree, which grows from 1.5m to 8m in height and is native to Australia. It is closely related to Acacia longifolia. A. obtusifolia can be distinguished by having phyllode margins which are resinous, usually blooming later in the year and with paler flowers than A. longifolia.[2] It flowers usually from December through February. Some populations of A. obtusifolia can survive winters to −6 °C and possibly a light snow; however, plants from populations in areas that are frost-free such as the coastal ranges of Northern NSW are susceptible to cold and will be killed by frosts lower than −3 °C. These populations avoid the valley floors and occur mainly on sandstone ridges well above the frost line.
Phytochemicals
[edit]Teracacidin, a flavan-3,4-diol, can be isolated from A. obtusifolia heartwood.[3]
Despite the lack of formal scientific publishing of its phytochemistry, several chromatographs show 0.3% alkaloid consisting of 2:1 N-Methyltryptamine, dimethyltryptamine (DMT), plus trace betacarbolines,[4] while another found gramine. It is highly variable in composition, sometimes devoid of tryptamines. There have also been findings of 5-MeO-DMT, DMT and bufotenine.[5] Some internet sources claim a 0.45% average dimethyltryptamine in the bark and 0.3% in the dried young leaves. Similarly, late 90s internet researchers have figures ranging from 0.4% to 0.5% in the dried material, noting there to be some variability.[6]
References
[edit]- ^ ILDIS LegumeWeb
- ^ PlantNET Flora Online
- ^ Flavan derivatives. XIX. Teracacidin and isoteracacidin from Acacia obtusifolia and Acacia maidenii heartwoods; Phenolic hydroxylation patterns of heartwood flavonoids characteristic of sections and subsections of the genus Acacia. JW Clark-Lewis and I Dainis, Australian Journal of Chemistry, 20(10), pp. 2191–2198, doi:10.1071/CH9672191
- ^ 'E' (pseud.), Entheogen Review (journal) 1996 ed. J. de Korne; Nen, privately commissioned test at Southern Cross University, NSW, Australia, 2000 [reported at EGA conference, Victoria 2011]
- ^ Poland National Herbarium http://herbarium.0-700.pl/Akacje.html Archived 18 July 2011 at the Wayback Machine (various internet sources, link dead)
- ^ Acacia and Entheogenic Tryptamines Archived 1 April 2009 at the Wayback Machine
External links
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