| Cycas fugax | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnosperms |
| Division: | Cycadophyta |
| Class: | Cycadopsida |
| Order: | Cycadales |
| Family: | Cycadaceae |
| Genus: | Cycas |
| Species: | C. fugax |
| Binomial name | |
| Cycas fugax K.D.Hill, H.T.Nguyen & P.K.Lôc | |
Cycas fugax is a species of cycad endemic to Vietnam. It has only been recorded in the wild from Phu Tho Province, Vietnam, [2] but may be reasonably common in cultivation in Hanoi. [3]
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 overcollection of male cones for preparation of traditional medicines. The species is listed in CITES Appendix II and IUCN Redlist.
Cycas ferruginea is a plant species native to Vietnam and to the Guangxi region of China. It grows on rocky crevices in forested areas at elevations of 200–500 m. It is known from a belt of limestone bluffs in Lang Son Province and Thai Nguyen Province in Vietnam, and in western Guangxi Province, China. It is also cultivated at the Guilin Botanical Garden, Guangxi.
Cycas chevalieri is a species of cycad in central Vietnam, including in Nghe An Province. It may also occur in Laos.
Cycas clivicola is a species of cycad in Thailand, Cambodia, Vietnam, and Malaysia. It is found on limestone outcrops, as well as on offshore islands.
Cycas collina is a species of cycad. It is found in the Mai Sơn area of Sơn La Province, Vietnam and in Sipsongpanna, Yunnan, China. It may also exist in Laos and Myanmar.
Cycas diannanensis is a species of cycad endemic to Yunnan, China.
Cycas dolichophylla is a species of cycad in northern Vietnam and southern China.
Cycas edentata is a species of cycad with a widespread distribution across Southeast Asia. It originally referred only to a single population of Cycas from Calusa Island in Cagayancillo, Philippines.
Cycas elephantipes is a species of cycad. It is found only on a few high sandstone mesas in Nong Bua Rawe District, Chaiyaphum Province, northeastern Thailand. It is morphologically similar to Cycas pachypoda from southern Vietnam.
Cycas elongata is a species of cycad endemic to southern Vietnam.
Cycas sexseminifera is a species of cycad in northern Vietnam and southern China.
Cycas pranburiensis is a species of cycad endemic to Thailand. It is found only in the Khao Sam Roi Yot National Park area of Prachuap Khiri Khan Province. It is named after Pran Buri District in Thailand, where it was discovered.
Cycas papuana is a species of cycad endemic to Papua New Guinea. It is found in Western Province, including the floodplains of the Fly River and near Daru to the west, and also extending to the Bensbach River.
Cycas hainanensis is a species of cycad in Hainan, China. It is protected in some forest reserves and in Tongguling National Nature Reserve (铜鼓岭国家级自然保护区), Wenchang County. In Hainan, it is also found in Wanning and Haikou districts.
Cycas hoabinhensis is a species of cycad endemic to central Vietnam, where it is found in Hoa Binh, Ha Nam, Ha Tay, and Ninh Binh provinces.
Cycas lindstromii is a species of cycad endemic to southern Vietnam. It is found in Ba Ria-Vung Tau, Binh Thuan, Khanh Hoa, and Ninh Thuan provinces, Vietnam.
Cycas macrocarpa is a species of cycad in Malaysia and Thailand.
Cycas wadei is a species of cycad endemic to Culion island, Philippines. There is only one subpopulation of about 5,000 mature individuals, located in a small area to the east of Halsey Harbor.
Cycas tropophylla, the Ha Long cycad, is a species of cycad endemic to Vietnam.
Cycas shanyaensis is a species of cycad endemic to Hainan, China.
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