Cycas revoluta
Leaves and male cone of Cycas revoluta
Conservation status
Near Threatened
Scientific classification
Kingdom: Plantae Division: Cycadophyta Class: Cycadopsida Order: Cycadales Family: Cycadaceae Genus: Cycas Species: C. revoluta
Binomial name
Cycas revoluta Thunb.

Cycas revoluta (Sago Cycad), is a cycad native to southern Japan. Though often known by the common name of King Sago Palm, or just Sago Palm, it is not a palm at all, but a type of gymnosperm. Download high resolution version (800x1067, 174 KB) Wikipedia does not have an article with this exact name. ... The conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. ... Image File history File links Status_iucn3. ... Near Threatened (NT) is an conservation status assigned to species or lower taxa which may be considered threatened with extinction in the near future, although it does not currently qualify for the threatened status. ... For other uses, see Scientific classification (disambiguation). ... For other uses, see Plant (disambiguation). ... Families Cycadaceae cycas family Stangeriaceae stangeria family Zamiaceae zamia family Leaves and male cone of Cycas revoluta Cycads are an ancient group of seed plants characterized by a large crown of compound leaves and a stout trunk. ... Families Cycadaceae cycas family Stangeriaceae stangeria family Zamiaceae zamia family Leaves and male cone of Cycas revoluta Cycads are an ancient group of seed plants characterized by a large crown of compound leaves and a stout trunk. ... Families Cycadaceae cycas family Stangeriaceae stangeria family Zamiaceae zamia family Leaves and male cone of Cycas revoluta Cycads are an ancient group of seed plants characterized by a large crown of compound leaves and a stout trunk. ... Species Cycas aculeata Cycas angulata Cycas apoa Cycas arenicola Cycas armstrongii Cycas arnhemica Cycas badensis Cycas balansae Cycas basaltica Cycas beddomei Cycas bifida Cycas bougainvilleana Cycas brachycantha Cycas brunnea Cycas cairnsiana Cycas calcicola Cycas campestris Cycas candida Cycas canalis Cycas chamaoensis Cycas changjiangensis Cycas chevalieri Cycas circinalis Cycas clivicola Cycas... Species Cycas aculeata Cycas angulata Cycas apoa Cycas arenicola Cycas armstrongii Cycas arnhemica Cycas badensis Cycas balansae Cycas basaltica Cycas beddomei Cycas bifida Cycas bougainvilleana Cycas brachycantha Cycas brunnea Cycas cairnsiana Cycas calcicola Cycas campestris Cycas candida Cycas canalis Cycas chamaoensis Cycas changjiangensis Cycas chevalieri Cycas circinalis Cycas clivicola Cycas... This article does not cite any references or sources. ... Carl Peter Thunberg (November 11, 1743 _ August 8, 1828) was a Swedish naturalist. ... Families Cycadaceae cycas family Stangeriaceae stangeria family Zamiaceae zamia family Leaves and male cone of Cycas revoluta Cycads are an ancient group of seed plants characterized by a large crown of compound leaves and a stout trunk. ... Genera Many; see list of Arecaceae genera Arecaceae or Palmae (also known by the name Palmaceae, which is taxonomically invalid. ... Divisions Pinophyta (or Coniferophyta) - Conifers Ginkgophyta - Ginkgo Cycadophyta - Cycads Gnetophyta - Gnetum, Ephedra, Welwitschia The gymnosperms (Gymnospermae) are a group of spermatophyte seed-bearing plants with ovules on the edge or blade of an open sporophyll, the sporophylls usually arranged in cone-like structures. ...

This very symmetrical plant supports a crown of shiny, dark green leaves on a thick shaggy trunk that is typically about 20 cm (8 in.) in diameter, sometimes wider. The trunk is very low to subterranean in young plants, but lengthens above ground with age. It can grow into very old specimens with 6–7 m (over 20 feet) of trunk; however, the plant is very slow-growing and requires about 50–100 years to achieve this height. Trunks can branch multiple times, thus producing multiple heads of leaves.

Cycas revoluta

The leaves are a deep semiglossy green and about 50–150 cm (18-45 in.) long when the plants are of a reproductive age. They grow out into a feather-like rosette to 1 m (3 feet) in diameter. The crowded, stiff, narrow leaflets are 8–18 cm (~7 in.) long and have strongly recurved or revolute edges. The basal leaflets become more like spines. The petiole or stems of the Sago Cycad are 6–10 cm (2.5-4 in.) long and have small protective barbs that must be avoided. Image File history File linksMetadata Download high resolution version (2272x1704, 913 KB) Cycas revoluta Picture of King Sago cycad taken by DanielCD on 4/9/05. ... Image File history File linksMetadata Download high resolution version (2272x1704, 913 KB) Cycas revoluta Picture of King Sago cycad taken by DanielCD on 4/9/05. ...

Propagation of Cycas revoluta is either by seed or by removal of basal offsets. As with other cycads, it is dioecious, with the males bearing cones and the females bearing groups of megasporophylls . Pollination can be done naturally by insects or artificially. A ripe red jalapeño cut open to show the seeds For other uses, see Seed (disambiguation). ... Close-up of an Echinopsis spachiana flower, showing both carpels and stamen, making it a complete flower. ... Mature female European Black Pine cone Male cones of a pine A cone (in formal botanical usage: strobilus, plural strobili) is an organ on plants in the division Pinophyta (conifers) that contains the reproductive structures. ... Orders Subclass Apterygota Archaeognatha (bristletails) Thysanura (silverfish) Subclass Pterygota Infraclass Paleoptera (Probably paraphyletic) Ephemeroptera (mayflies) Odonata (dragonflies and damselflies) Infraclass Neoptera Superorder Exopterygota Grylloblattodea (ice-crawlers) Mantophasmatodea (gladiators) Plecoptera (stoneflies) Embioptera (webspinners) Zoraptera (angel insects) Dermaptera (earwigs) Orthoptera (grasshoppers, etc) Phasmatodea (stick insects) Blattodea (cockroaches) Isoptera (termites) Mantodea (mantids) Psocoptera...

[edit] Cultivation and uses

Cycas revoluta is one of the most widely cultivated caca plants cycads, grown outdoors in warm temperate and subtropical regions, or under glass in colder areas, like yo mama's booty. It grows best in sandy, well-drained soil, preferably with some organic matter (caca). It needs good drainage or it will rot. It is fairly drought-tolerant and grows well in full sun or outdoor shade, but needs bright light when grown indoors. The leaves can bleach somewhat if moved from indoors to full sun outdoors.

The pith is very rich in edible starch, and is used for making sago. Before use, the starch must be carefully washed to leach out toxins contained in the pith. The centre dark spot (about 1 mm diameter) in this yew wood is the pith Elderberry shoot cut longitudinally to show the broad, solid pith (rough-textured, white) inside the wood (smooth, yellow-tinged). ... Starch (CAS# 9005-25-8, chemical formula (C6H10O5)n,[1]) is a mixture of amylose and amylopectin (usually in 20:80 or 30:70 ratios). ... For other uses, see Sago (disambiguation). ... For other uses, see Toxin (disambiguation). ...

Of all the cycads, the Sago Palm is the most popular in horticulture. It is seen in almost all botanical gardens, in both temperate and tropical locations. In many areas of the world, it is heavily promoted commercially as a landscape plant. It is also quite popular as a bonsai plant. First discovered in the late 1700s, it is native to various areas of southern Japan and is thus tolerant of mild to somewhat cold temperatures, provided the ground is dry. Frond damage can occur at temperatures below −5 °C. It does however require hot summers with mean temperatures of 30 to 35 °C (86 to 95 F)for successful growth, making outdoor growing impossible in colder places such as northern Europe, even where winter temperatures are not too cold. One downfall to this gorgeous palm, is that it is poisonous to animals and humans. Horticulture (Latin: hortus (garden plant) + cultura (culture)) are classically defined as the culture or growing of garden plants. ... Maple Bonsai in Heidelberg, Germany Bonsai displayed at a garden show in Tatton Park in Cheshire, England Bonsai   (Japanese: , literally potted plant) is the art of aesthetic miniaturization of trees by growing them in containers. ... For other uses, see Europe (disambiguation). ...

female reproductive structure Image File history File links Download high resolution version (1600x1200, 503 KB) Summary Female cone of Cycas revoluta. ...
new leaves
young	seeds	seedling	Cycas revoluta

[edit] Notes

[edit] References

• Hill (2003). Cycas revoluta. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006.
• The Cycad Pages: Cycas revoluta
• University of Arizona Pima County Cooperative Extension: Sago Palm
• The Sago Palm, Cycas revoluta by Phil Bergman

The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species and can be found here. ... The World Conservation Union or International Union for the Conservation of Nature and Natural Resources (IUCN) is an international organization dedicated to natural resource conservation. ...

[edit] External links

• MicrosporophyllMacrosporophyllSeeds - Flavon's Wild herb and Alpine plants

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Cycas revoluta