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| Petrosaviaceae | |
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_(20407475671).jpg) | |
| Petrosavia sakuraii | |
Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Petrosaviales Takht. |
| Family: | Petrosaviaceae Hutch.[1] |
| Type species | |
| Petrosavia stellaris | |
| Genera | |
Petrosaviaceae is afamily offlowering plants belonging to amonotypic order,Petrosaviales. Petrosaviales aremonocots, and are grouped within thelilioid monocots. Petrosaviales is a very small order composed of one family, two genera and four species accepted in 2016.[2] Some species are photosynthetic (Japonolirion) and others are rare, leafless, chlorophyllous,mycoheterotrophic plants (Petrosavia). The family is found in low-lightmontanerainforests in Japan, China, Southeast Asia and Borneo. They are characterised by havingbracteateracemes,pedicellate flowers, six persistent tepals,septal nectaries, three almost-distinctcarpels, simultaneousmicrosporogenesis,monosulcate pollen, andfollicular fruit.[3]
The family has only been recognized in modern classifications; previously, the family members were typically treated as belonging to theLiliaceae. TheAPG II system recognized the family and assigned it to the clademonocots, unplaced as to order. TheAPG III system of 2009 and theAPG IV system of 2016 placed the family Petrosaviaceae in the order Petrosaviales.[1][4]
As of June 2016[update], two genera are accepted by theWorld Checklist of Selected Plant Families:[5]
The plant species in both genera are found in high-elevation habitats.
Media related toPetrosaviaceae at Wikimedia Commons
Data related toPetrosaviaceae at WikispeciesOrders offlowering plants (APG IV) | ||||||||||||||||||||||||||||||||||||||||||||||||||
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