Crypteroniaceae

Crypteroniaceae
Systematics
	Eudicotyledons
	Nuclear eudicotyledons
	Rosids
	Eurosiden II
Order :	Myrtle-like (Myrtales)
Family :	Crypteroniaceae
Scientific name
	Crypteroniaceae
	A.DC. ex DC. & A.DC.

The Crypteroniaceae are a family of plants in the order of the myrtle-like (Myrtales). They have a purely palaeotropic distribution.

description

The species in this family are evergreen trees and shrubs . Young twigs are often square. The short-stalked leaves are arranged opposite to one another, like most other myrtle-like species . The simple leaf blades are leathery. Stipules are tiny or only rudimentary .

Many flowers are in axillary, racemose , spiked or paniculate inflorescences . The flowers are hermaphroditic or unisexual, if they are unisexual, then the plants are dioeciously separated ( dioecious ). The small flowers are radial symmetry and usually four to five-fold, rarely six-fold. A hypanthium is formed. Sepals are present in all genera. Petals are absent in Crypteronia , are present in the other genera. Usually there is only one circle with four or five, rarely six free fertile stamens ; in Axinandra there are two circles, each with five free, fertile stamens. The anthers are small. The two to five carpels are one above to below permanent ovary grown. In each flower there is only one stylus with a mostly heady stigma .

There are fruit capsules formed to 100 seeds contain. The small seeds are wingless or have one or two membranous wings.

Systematics

The Crypteroniaceae family was established in 1868 by Alphonse Louis Pierre Pyrame de Candolle in Augustin Pyramus de Candolle & Alphonse Louis Pierre Pyrame de Candolle: Prodromus Systematis Naturalis Regni Vegetabilis , 16 (2), p. 677. Type genus is Crypteronia Blume .

Within the order of the Myrtales, Crypteroniaceae are most closely related to the families of the Penaeaceae from southern Africa and Alzateaceae from the Neotropics . It is believed that their common ancestor lived in western Gondwana during the Cretaceous Period . The Crypteroniaceae drifted northward with the Indian subcontinent after the supercontinent broke up. Before the collision with Asia, the three genera arose and then spread to today's area: in Southeast Asia , the Malay Archipelago and Sri Lanka .

The family Crypteroniaceae contains three genera with about twelve species:

Axinandra Thwaites : With four types:
- Axinandra alata Baill. : It occurs in Sarawak .
- Axinandra beccariana Baill. (Syn .: Axinandra borneensis Bakh.f. ): It occurs on the southern Malay Peninsula and Borneo.
- Axinandra coriacea Baill. : It occurs on Borneo.
- Axinandra zeylanica Thwaites : It occurs in Sri Lanka .

Crypteronia flower : With seven species:
- Crypteronia borneensis J.T.Pereira & KMWong : It occurs in Borneo.
- Crypteronia cumingii (Planch.) Endl. : It occurs from Malesia to New Guinea.
- Crypteronia elegans J.T.Pereira & KMWong : It occurs in Borneo.
- Crypteronia glabriflora J.T.Pereira & KMWong : It occurs in Borneo.
- Crypteronia griffithii C.B.Clarke : It occurs in Myanmar, Malaysia, Boneo and Sumatra.
- Crypteronia macrophylla Beus.-Osinga : It occurs in Borneo.
- Crypteronia paniculata flower : With two varieties:
  - Crypteronia paniculata var. Paniculata : It occurs from Assam to western Malesia and the Philippines.
  - Crypteronia paniculata var. Pubescens (Wall.) In short : It occurs in Thailand, Malaysia, Myanmar, Cambodia, Laos and Vietnam.

Dactylocladus olive. : With only one type:
- Dactylocladus stenostachys olive. It isnative tothe lowland swamp forests of Borneo . The wood is used.

swell

The family of crypteroniaceae in APWebsite. (Section systematics, distribution and description)
The Crypteroniaceae family at DELTA. (Section description)
Haining Qin & Anthony R. Brach: Crypteroniaceae in der Flora of China , Volume 13, 2007, p. 292: Online. (Section description)

Individual evidence

↑ Entry in Tropicos .
↑ Elena Conti, Torsten Erikkson, Jürg Schonenberger, Kenneth J. Sytsma, & David A. Baum: Early Tertiary Out-of-India Dispersal of Crypteroniaceae: Evidence from Phylogeny and Molecular Dating. , In: Evolution , 56 (10), 2002, pp. 1931-1942. Abstract. (English)
↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Rafaël Govaerts (Ed.): Crypteroniaceae. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved September 28, 2018.

Web links

Commons : Crypteroniaceae - album with pictures, videos and audio files

[tropicos-1] Entry in Tropicos .

[Conti2002-2] Elena Conti, Torsten Erikkson, Jürg Schonenberger, Kenneth J. Sytsma, & David A. Baum: Early Tertiary Out-of-India Dispersal of Crypteroniaceae: Evidence from Phylogeny and Molecular Dating. , In: Evolution , 56 (10), 2002, pp. 1931-1942. Abstract. (English)

[WCSP-3] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Rafaël Govaerts (Ed.): Crypteroniaceae. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved September 28, 2018.