Cycas campestris: Difference between revisions
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{{Short description|Species of cycad}} |
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{{Taxobox |
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{{Speciesbox |
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| color = lightgreen |
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| image = |
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| status = |
| status = NT |
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| status_system = IUCN3.1 |
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| trend = stable |
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| genus = Cycas |
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| divisio = [[Cycad]]ophyta |
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| authority = K.D.Hill |
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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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| genus = ''[[Cycas]]'' |
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| species = '''''C. campestris''''' |
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| binomial = ''Cycas campestris'' |
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}} |
}} |
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==Description== |
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'''''Cycas campestris''''' is a species of [[cycad]] in the genus ''[[Cycas]]'', native to southeastern [[Papua New Guinea]] in the lowland region near [[Port Moresby]]. It grows in open, grassy locations, often in areas with frequent grass fires. |
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'''''Cycas campestris''''' is named after the latin word ''camester'', meaning plains or flats, which the cycad grows in. Stems unbranched, erect, growing between 3 to 6 meters. Leaves numerous growing to .8-1.7 m long. Flat shaped with apex terminating in paired leaflets. Emergent leaves deep orange [[tomentose]], [[glabrous]] with maturity. [[Petiole]] [[glabrous]], armed with spikes and 15-50 cm long. Leaflets in 80-115 pairs, angled forward at 60-85 degrees. |
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The stems are erect, up to 2.5 m tall and 20 cm diameter. The [[leaf|leaves]] are orange tomentose on emerging, soon becoming bright glossy green and glabrous, 80–170 cm long, pinnate, with 120-230 leaflets. The leaflets are 8.5–16 cm long and 5–8 mm wide, and lie flat or in a shallow 'v'-shape on either side of the leaf stem. The leaf [[Petiole (botany)|petiole]]s are 15–90 cm long, and armed with sharp spines at the base. |
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| ⚫ | The female [[strobilus|cones]] are open, with [[sporophyll]]s 13–25 cm long, with two to six ovules per sporophyll. The lamina is lanceolate, with spined dentate margins and an apical spine. The [[sarcotesta]] is 2–3.5 mm thick and orange, the [[sclerotesta]] flattened and long ovoid, with a network of shallow grooves. The male cones are solitary, narrow ovoid, 13–17 cm long and 7–9 cm diameter, brown, the sporophylls 33–40 mm long with an apical spine. |
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==Habitat== |
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This cycad us native to [[Papua New Guinea]], in the low elevations of the southeastern part of the country. Prefers open, grassy locations, where annual grass fires are present. Conservation status of the plant is secure. |
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==References== |
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*[http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/cycadpg?taxname=Cycas+campestris Cycad Pages: ''Cycas campestris''] {{Webarchive|url=https://web.archive.org/web/20130510014837/http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/cycadpg?taxname=Cycas+campestris |date=2013-05-10 }} |
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*[http://www.iucnredlist.org/search/details.php/42072/all IUCN Redlist: ''Cycas campestris''] |
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*Whitelock, L. M. (2002). The Cycads. Timber Press, Portland, Oregon. |
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{{Taxonbar|from=Q5197925}} |
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[[Category:Near threatened plants]] |
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[[Category:Plants described in 1994]] |
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Latest revision as of 20:20, 14 February 2024
| Cycas campestris | |
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Cycadophyta |
| Class: | Cycadopsida |
| Order: | Cycadales |
| Family: | Cycadaceae |
| Genus: | Cycas |
| Species: | C. campestris
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| Binomial name | |
| Cycas campestris K.D.Hill
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Cycas campestris is a species of cycad in the genus Cycas, native to southeastern Papua New Guinea in the lowland region near Port Moresby. It grows in open, grassy locations, often in areas with frequent grass fires.
The stems are erect, up to 2.5 m tall and 20 cm diameter. The leaves are orange tomentose on emerging, soon becoming bright glossy green and glabrous, 80–170 cm long, pinnate, with 120-230 leaflets. The leaflets are 8.5–16 cm long and 5–8 mm wide, and lie flat or in a shallow 'v'-shape on either side of the leaf stem. The leaf petioles are 15–90 cm long, and armed with sharp spines at the base.
The female cones are open, with sporophylls 13–25 cm long, with two to six ovules per sporophyll. The lamina is lanceolate, with spined dentate margins and an apical spine. The sarcotesta is 2–3.5 mm thick and orange, the sclerotesta flattened and long ovoid, with a network of shallow grooves. The male cones are solitary, narrow ovoid, 13–17 cm long and 7–9 cm diameter, brown, the sporophylls 33–40 mm long with an apical spine.
References[edit]
- Cycad Pages: Cycas campestris Archived 2013-05-10 at the Wayback Machine
- IUCN Redlist: Cycas campestris
- Whitelock, L. M. (2002). The Cycads. Timber Press, Portland, Oregon.