Cycas campestris
Open, grassy locations·Arborescent
Cycas campestris is a species of cycad native to the lowland region near Port Moresby in southeastern Papua New Guinea. This species is characterized by its erect stems, reaching up to 2.5 meters in height, and its pinnate leaves, which are glossy green and bear numerous leaflets. It typically grows in open, grassy areas, often enduring frequent grass fires.
Key Facts
- ›Native to southeastern Papua New Guinea, specifically the lowland region near Port Moresby.
- ›Stems are erect, reaching up to 2.5 meters in height and 20 cm in diameter.
- ›Leaves are pinnate, 80–170 cm long, with 120-230 glossy green leaflets.
- ›Leaflets are 8.5–16 cm long and 5–8 mm wide, with leaf petioles armed with sharp spines at the base.
- ›Female cones bear sporophylls with two to six ovules, while male cones are narrow ovoid, 13–17 cm long.
- ›Often found in open, grassy locations susceptible to frequent grass fires.
Southeastern Papua New Guinea
Erect, Up To 2.5 m Tall, 20 cm Diameter
- Orange tomentose when emerging
- Soon become bright glossy green and glabrous
- 80–170 cm long
- Pinnate
- 120-230 leaflets
- Leaflets 8.5–16 cm long and 5–8 mm wide
- Leaflets lie flat or in a shallow 'V'-shape on either side of the leaf stem
- Leaf petioles 15–90 cm long
- Leaf petioles armed with sharp spines at the base
- Female cones are open, with sporophylls 13–25 cm long, each bearing two to six ovules.
- Female sporophyll lamina is lanceolate with spined dentate margins and an apical spine.
- Female sarcotesta is 2–3.5 mm thick and orange.
- Male cones are solitary, narrow ovoid, 13–17 cm long and 7–9 cm diameter, brown.
- Male sporophylls are 33–40 mm long with an apical spine.
Sarcotesta 2–3.5 mm thick and orange, Sclerotesta flattened and long ovoid, Sclerotesta with a network of shallow grooves
About Cycas campestris
Cycas campestris is a species of cycad belonging to the genus Cycas, recognized for its distinct botanical features and specific geographic distribution. This species is indigenous to the lowland region surrounding Port Moresby in southeastern Papua New Guinea. It is commonly found growing in open, grassy areas, a habitat that frequently experiences grass fires, suggesting it may possess adaptations for such environments.
Botanical Characteristics
The plant exhibits erect stems that can ascend to heights of up to 2.5 meters, with a trunk diameter reaching approximately 20 centimeters. Its leaves are pinnate, measuring between 80 and 170 centimeters in length, and emerge with an orange tomentose covering before maturing into a bright, glossy green and becoming glabrous. Each leaf is comprised of 120 to 230 leaflets, which are 8.5–16 cm long and 5–8 mm wide. These leaflets are arranged to lie flat or in a shallow 'v'-shape relative to the leaf stem. The leaf petioles, measuring 15–90 cm long, are notable for the presence of sharp spines at their base.
Reproductive Structures
Reproduction in Cycas campestris involves distinct male and female cones. The female cones are characterized by open sporophylls, each 13–25 cm long, bearing two to six ovules. The lamina of the female sporophyll is lanceolate, featuring spined, dentate margins and an apical spine. The seed's sarcotesta is 2–3.5 mm thick and orange, while the sclerotesta is flattened, long ovoid, and exhibits a network of shallow grooves. Male cones are solitary, narrowly ovoid, measuring 13–17 cm in length and 7–9 cm in diameter, and are brown. The male sporophylls are 33–40 mm long and possess an apical spine.
Source: Wikipedia ↗
Frequently Asked Questions
Where is Cycas campestris found naturally?
Cycas campestris is native to the lowland region near Port Moresby in southeastern Papua New Guinea. It is found in open, grassy environments within this area.
What are the characteristics of the stems of Cycas campestris?
The stems of Cycas campestris are erect and can grow up to 2.5 meters tall with a diameter of approximately 20 cm. They are a prominent feature of this cycad species.
Can you describe the leaves and leaflets of Cycas campestris?
The leaves of Cycas campestris are pinnate and can range from 80 to 170 cm in length. They are adorned with 120 to 230 glossy green leaflets, each measuring 8.5–16 cm long and 5–8 mm wide. The leaf petioles also feature sharp spines near the base.
What do the reproductive cones of Cycas campestris look like?
The female cones are open, with sporophylls that are 13–25 cm long and contain two to six ovules. The male cones are solitary, narrow ovoid, measure 13–17 cm in length and 7–9 cm in diameter, and are brown with sporophylls tipped with an apical spine.
What kind of habitat does Cycas campestris prefer?
Cycas campestris thrives in open, grassy locations, often in areas that experience frequent grass fires. This suggests a degree of adaptation to fire-prone environments.
Related Cycad species
Cycas armstrongii
Cycas armstrongii is a species of cycad native to the Northern Territory of Australia, found across the Top End region. It is characterized by its relatively tall stems and unique deciduous leaves that shed during the dry season, earning it the nickname "fire fern." This species is notably abundant and highly tolerant of the annual grass fires common in its habitat.
Cycas arnhemica
Cycas arnhemica is a species of cycad native to Arnhem Land in Australia's Northern Territory. It is characterized by erect stems reaching up to 2.5 meters and pinnate leaves with numerous leaflets. This species is commonly found in eucalyptus woodlands and savanna grasslands, with a restricted distribution around specific river systems.
Cycas bougainvilleana
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