Spiraeeae

Spiraeeae
	Forest goat's beard ( Aruncus dioicus )
Systematics
	Rosids
	Eurosiden I
Order :	Rose-like (rosales)
Family :	Rose family (Rosaceae)
Subfamily :	Spiraeoideae
Tribe :	Spiraeeae
Scientific name
	Spiraeeae
	DC.

The Spiraeeae are a family of plants within the rose family (Rosaceae) and comprise eight genera with a total of about 70 to 100 species.

features

The Spiraeeae are herbaceous plants or shrubs and sometimes form rosettes. The leaves are simple, with the exception of Luetkea and Aruncus . Stipules are missing. The ovules are unitegmisch, a feature that does not occur in the closely related clans. The fruits are pomes or collective achenes . The basic chromosome number is x = 9. Polyploidy occurs in Spiraea , Holodiscus and rarely in Aruncus .

distribution

The tribe is represented in the temperate areas of the northern hemisphere, with most genera restricted to America. Spiraeea is distributed holarctic, Sibiraea only in Eurasia.

Systematics

The Spiraeeae are one of the four tribes within the subfamily Spiraeoideae that are not assigned to any Supertribus. Her sister group is the Supertribus Pyrodae .

The following genera are included in the tribe:

Goat's beard ( Aruncus ), with a species in the northern temperate areas
Kelseya , with a species in North America
Luetkea , with a species in western North America
Petrophytum , with four species in western North America
- Mat-forming rock spar ( Petrophytum caespitosum )
- Ash gray rock spar ( Petrophytum cinerascens )
- Henderson rock spar ( Petrophytum hendersonii )
Sibiraea , with five species in Europe and Western Asia
Spiraea ( Spiraea ) with 50 to 80 types in the northern hemisphere
Xerospiraea with a species in Mexico
Five species holodiscus in America

The monotypical Korean genus Pentactina is regarded as a separate genus or as a synonym for Spiraea , depending on the author . Molecular genetic studies to clarify this are still pending .

Siberian pinnate sparrow ( Sorbaria sorbifolia )

Cladistic analyzes of molecular genetic analyzes resulted in the following cladogram:

	Aruncus

	Luetkea

	Holodiscus

	Xerospiraea

	Kelseya

	Spiraea

	Petrophytum

	Sibiraea

Both the tribe as a whole and the individual genera are monophyletic .

literature

D. Potter, T. Eriksson, RC Evans, S. Oh, JEE Smedmark, DR Morgan, M. Kerr, KR Robertson, M. Arsenault, TA Dickinson, CS Campbell: Phylogeny and classification of Rosaceae . Plant Systematics and Evolution, Volume 266, 2007, pp. 5-43. doi : 10.1007 / s00606-007-0539-9
D. Potter, SM Still, D. Ballian, G. Božič, J. Franjiæ, H. Kraigher: Phylogenetic relationships in tribe Spiraeeae (Rosaceae) inferred from nucleotide sequence data . Plant Systematics and Evolution, Volume 266, 2007, pp. 105-118. doi : 10.1007 / s00606-007-0544-z

Web links

Commons : Spiraeeae - collection of images, videos and audio files

Individual evidence

^ TA Dickinson, E. Lo, N. Talent: Polyploidy, reproductive biology, and Rosaceae: understanding evolution and making classifications. Plant Systematics and Evolution, Volume 266, 2007, pp. 59-78. doi : 10.1007 / s00606-007-0541-2
↑ D. Potter et al .: Phylogeny and classification of Rosaceae . Plant Systematics and Evolution, Volume 266, 2007, pp. 5-43.
↑ D. Potter et al .: Phylogenetic relationships in tribe Spiraeeae (Rosaceae) inferred from nucleotide sequence data . Plant Systematics and Evolution, Volume 266, 2007, pp. 105-118.

[1] TA Dickinson, E. Lo, N. Talent: Polyploidy, reproductive biology, and Rosaceae: understanding evolution and making classifications. Plant Systematics and Evolution, Volume 266, 2007, pp. 59-78. doi : 10.1007 / s00606-007-0541-2

[2] D. Potter et al .: Phylogeny and classification of Rosaceae . Plant Systematics and Evolution, Volume 266, 2007, pp. 5-43.

[3] D. Potter et al .: Phylogenetic relationships in tribe Spiraeeae (Rosaceae) inferred from nucleotide sequence data . Plant Systematics and Evolution, Volume 266, 2007, pp. 105-118.