Cycas pruinosa

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Cycas pruinosa
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Division: Cycadophyta
Class: Cycadopsida
Order: Cycadales
Family: Cycadaceae
Genus: Cycas
Species:
C. pruinosa
Binomial name
Cycas pruinosa
Maconochie

Cycas pruinosa is a small to medium species of cycad, a palm-like seed plant. It is a widespread but sporadic species in the eastern and southern Kimberley region of Western Australia, occurring also in the Spirit Hills on Bullo River Station in the Northern Territory.

This species is distinguished by its narrow, glabrous leaflets with strongly recurved margins; its long, slender microsporangiate cones; and its long megasporophylls with long, sterile apices. It has a stout, erect trunk, around 2.5 m (8.2 ft) tall and 30 cm (12 in) in diameter, which is crowned with arching fronds, distinctly curved from the apex and V-shaped in cross-section. Glaucous leaf waxes may be either present or absent, causing plants to be either blue or green in overall appearance. It is suited to tropical regions which have a seasonally dry climate.

This strikingly distinctive and widespread species was only first recognised in 1978 by Australian botanist John Maconochie. The specific name, pruinosa, means "covered with powder" and aptly describes the blue-white ovules of this plant.

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Cycas is a genus of plants belonging to a very ancient lineage, the Cycadophyta, which are not closely related to palms, ferns, trees or any other modern group of plants. They are evergreen perennials which achieved their maximum diversity in the Jurassic and Cretaceous periods, when they were distributed almost worldwide. At the end of the Cretaceous, when the non-avian dinosaurs became extinct, so did most of the cycas in the Northern Hemisphere.

<i>Zamia furfuracea</i> Species of cycad

Zamia furfuracea is a cycad native to southeastern Veracruz state in eastern Mexico. Although not a palm tree (Arecaceae), its growth habit is superficially similar to a palm; therefore it is commonly known as cardboard palm or cardboard cycad. Other names include cardboard plant, cardboard sago, Jamaican sago, and Mexican cycad. The plant's binomial name comes from the Latin zamia, for "pine nut", and furfuracea, meaning "mealy" or "scurfy".

<i>Cycas revoluta</i> Species of plant

Cycas revoluta, is a species of gymnosperm in the family Cycadaceae, native to southern Japan including the Ryukyu Islands. It is one of several species used for the production of sago, as well as an ornamental plant.

Sago palm is a common name for several plants which are used to produce a starchy food known as sago. Sago palms may be "true palms" in the family Arecaceae, or cycads with a palm-like appearance. Sago produced from cycads must be detoxified before consumption. Plants called sago palm include:

<i>Cycas angulata</i> Species of cycad

Cycas angulata is a species of cycad in the genus Cycas, native to Australia in northeast Northern Territory and northwest Queensland.

<i>Cycas armstrongii</i> Species of cycad

Cycas armstrongii is a species of cycad in the genus Cycas, endemic to Northern Territory of Australia. It is found from the Finniss River in the west to the Arnhem Highway in the east, north of Pine Creek. It also occurs on the Tiwi Islands and the Cobourg Peninsula

<i>Cycas beddomei</i> Species of cycad

Cycas beddomei is a species of cycad in the genus Cycas, native to India, where it is confined to a small area of Andhra Pradesh state in the Tirumala Hills in scrubland and brush covered hills.

Cycas bifida is a species of cycad plant in the genus Cycas, native to southern China, and northern Vietnam.

Cycas cairnsiana is a species of cycad in the genus Cycas, native to northern Australia in northern Queensland on the Newcastle Range.

Cycas chamaoensis is named after the only known habitat of this species, on and near Khao Chamao mountain in Khao Chamao District, Thailand. Stems are arborescent, either erect or decumbent. Leaves numerous, exceeding 60 per crown, 1.2-2.5 meters in length, ending in terminal spine. Petiole 30–60 cm, glabrous and partially spiny. Leaflets in 85-155 pairs, and lanceolate, glabrous and angled forward at 60-70 degrees.

<i>Cycas circinalis</i> Species of cycad

Cycas circinalis, also known as the queen sago, is a species of cycad known in the wild only from southern India. Cycas circinalis is the only gymnosperm species found among native Sri Lankan flora.

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<i>Cycas micronesica</i> Species of plant

Cycas micronesica is a type of cycad found in the island of Yap in Micronesia, the Marianas islands of Guam and Rota, and The Republic of Palau. It is commonly known as Federico nut or Fadang in Chamorro. The species, previously lumped with Cycas rumphii or Cycas circinalis, was described in 1994 by Ken Hill. Paleoecological studies have determined that C. micronesica has been present on the island of Guam for about 9,000 years. It is linked with the human degenerative disease Lytico-Bodig disease, which is similar to amyotrophic lateral sclerosis (ALS) through a neurotoxin (BMAA) in the seeds, which were a traditional food source on Guam until the 1960s.

<i>Cycas pectinata</i> Species of cycad

Cycas pectinata was the fourth species of Cycas to be named; it was described in 1826 by Scottish surgeon and botanist Francis Buchanan-Hamilton from Kamrup, Assam in northeast India. The species is one of the most widespread cycads. It is found in the northeastern part of India, Nepal, Bhutan, northern Burma, southern China (Yunnan), Bangladesh, Burma, Malaysia, Cambodia, northern Thailand, Laos, and Vietnam. Cycas pectinata usually grow at elevation 300 m to 1200 m and in difficult terrains. In China, it grows in dry, open thickets in limestone mountains, red soil in sparse monsoon forests. Cycas pectinata grows up to 40 feet (12 m) tall and has very large, ovoid male cones. The tallest Cycas pectinata is a female plant in North Kamrup, Assam which measures 52.8 feet (16.1 m). The tree is the world's tallest Cycas plant. In Northeast India, the species is under severe threat due to clearing of forest and over collection of male cones for preparation of traditional medicines. The species is listed in CITES Appendix II and IUCN Redlist.

<i>Cycas rumphii</i> Species of plant

Cycas rumphii, commonly known as queen sago or the queen sago palm, is a dioecious gymnosperm, a species of cycad in the genus Cycas native to Indonesia, New Guinea and Christmas Island. Although palm-like in appearance, it is not a palm.

<i>Cycas thouarsii</i> Species of evergreen plant

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<i>Cycas platyphylla</i> Species of cycad

Cycas platyphylla is a cycad in the genus Cycas, native to Queensland, Australia.

<i>Cycas inermis</i> Species of cycad

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