Cycas bougainvilleana: Difference between revisions
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{{Short description|Species of cycad}} |
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{{italic title}} |
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{{Speciesbox |
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{{Taxobox |
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| image = Cycas bougainvilleana Furnas 2015 (01).jpg |
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| status = NT |
| status = NT |
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| status_system = IUCN3.1 |
| status_system = IUCN3.1 |
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| status_ref = <ref name=IUCN>{{cite iucn | author = Hill, K.D. | title = ''Cycas bougainvilleana'' | page = e.T42070A10643325 | year = 2010 | access-date = 26 June 2022}}</ref> |
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| regnum = [[Plant]]ae |
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| divisio = [[Cycad]]ophyta |
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| classis = [[Cycad]]opsida |
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| ordo = [[Cycad]]ales |
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| familia = [[Cycas|Cycadaceae]] |
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| binomial = ''Cycas bougainvilleana'' |
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'''''Cycas bougainvilleana''''' is a species of [[cycad]] in the genus ''[[Cycas]]'', native to the islands northeast of [[Papua New Guinea]], on [[New Britain]], the [[Bismarck Archipelago]] and the [[Solomon Islands]], where it occurs on or near the coast in [[calcareous]] coral sand dunes and in adjacent forests. |
'''''Cycas bougainvilleana''''' is a species of [[cycad]] in the genus ''[[Cycas]]'', native to the islands northeast of [[Papua New Guinea]], on [[New Britain]], the [[Bismarck Archipelago]] and the [[Solomon Islands]],<ref>{{Cite web |title=Cycas bougainvilleana K.D.Hill {{!}} Plants of the World Online {{!}} Kew Science |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:980287-1 |access-date=2023-02-21 |website=Plants of the World Online |language=en}}</ref> where it occurs on or near the coast in [[calcareous]] coral sand dunes and in adjacent forests. |
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The stems are erect, up to 5 m tall, with a crown of numerous [[leaf|leaves]]. The leaves are 2.4-2.7 m long, pinnate, with 130-260 leaflets; they are densely white to orange tomentose at first, eventually glabrous, glossy bright green. The leaflets are |
The stems are erect, up to 5 m tall, with a crown of numerous [[leaf|leaves]]. The leaves are 2.4-2.7 m long, pinnate, with 130-260 leaflets; they are densely white to orange tomentose at first, eventually glabrous, glossy bright green. The leaflets are 25–34 cm long and 13–18 mm wide, and angled forward at 60-80° degrees. The [[Petiole (botany)|petiole]] is sometimes armed with spines, and terminates in a spine or pair of leaflets. |
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The female [[strobilus|cones]] are open, with [[sporophyll]]s 7 cm long and 3. |
The female [[strobilus|cones]] are open, with [[sporophyll]]s 7 cm long and 3.5–5 cm wide, and dense grey to orange tomentose, with 6-9 ovules per sporophyll. The [[sarcotesta]] is thick orange tomentose, and the [[sclerotesta]] flattened ovoid shaped. The male cones erect, narrow ovoid, with a broad apical spine. |
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It is named after its home on the [[Bougainville Island]] in the Bismarck Archipelago. It is not considered threatened. It is closely related to ''[[Cycas seemannii]]'' from [[Fiji]]. |
It is named after its home on the [[Bougainville Island]] in the Bismarck Archipelago. It is not considered threatened. It is closely related to ''[[Cycas seemannii]]'' from [[Fiji]]. |
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==References== |
==References== |
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{{Reflist}} |
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*[http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/cycadpg?taxname=Cycas+bougainvilleana Cycad Pages: ''Cycas bougainvilleana''] |
*[http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/cycadpg?taxname=Cycas+bougainvilleana Cycad Pages: ''Cycas bougainvilleana''] {{Webarchive|url=https://web.archive.org/web/20130510015203/http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/cycadpg?taxname=Cycas+bougainvilleana |date=2013-05-10 }} |
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{{Taxonbar|from=Q770035}} |
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[[Category:Cycas|bougainvilleana]] |
[[Category:Cycas|bougainvilleana]] |
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[[Category:Flora of Papua New Guinea]] |
[[Category:Flora of Papua New Guinea]] |
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[[Category:Flora of the Solomon Islands (archipelago)]] |
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[[Category:Flora of the Bismarck Archipelago]] |
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[[Category:Near threatened plants]] |
[[Category:Near threatened plants]] |
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[[Category:Plants described in 1994]] |
Latest revision as of 14:23, 26 February 2023
Cycas bougainvilleana | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Gymnospermae |
Division: | Cycadophyta |
Class: | Cycadopsida |
Order: | Cycadales |
Family: | Cycadaceae |
Genus: | Cycas |
Species: | C. bougainvilleana
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Binomial name | |
Cycas bougainvilleana K.D.Hill
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Cycas bougainvilleana is a species of cycad in the genus Cycas, native to the islands northeast of Papua New Guinea, on New Britain, the Bismarck Archipelago and the Solomon Islands,[2] where it occurs on or near the coast in calcareous coral sand dunes and in adjacent forests.
The stems are erect, up to 5 m tall, with a crown of numerous leaves. The leaves are 2.4-2.7 m long, pinnate, with 130-260 leaflets; they are densely white to orange tomentose at first, eventually glabrous, glossy bright green. The leaflets are 25–34 cm long and 13–18 mm wide, and angled forward at 60-80° degrees. The petiole is sometimes armed with spines, and terminates in a spine or pair of leaflets.
The female cones are open, with sporophylls 7 cm long and 3.5–5 cm wide, and dense grey to orange tomentose, with 6-9 ovules per sporophyll. The sarcotesta is thick orange tomentose, and the sclerotesta flattened ovoid shaped. The male cones erect, narrow ovoid, with a broad apical spine.
It is named after its home on the Bougainville Island in the Bismarck Archipelago. It is not considered threatened. It is closely related to Cycas seemannii from Fiji.
References
[edit]- ^ Hill, K.D. (2010). "Cycas bougainvilleana". IUCN Red List of Threatened Species. 2010: e.T42070A10643325. Retrieved 26 June 2022.
- ^ "Cycas bougainvilleana K.D.Hill | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2023-02-21.
- Cycad Pages: Cycas bougainvilleana Archived 2013-05-10 at the Wayback Machine