Hordeum intercedens
| Hordeum intercedens | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Poaceae |
| Subfamily: | Pooideae |
| Genus: | Hordeum |
| Species: | H. intercedens
|
| Binomial name | |
| Hordeum intercedens Nevski
| |
Hordeum intercedens is a diploid, annual species of
Channel Islands of California; many of the occurrences known from the mainland have been extirpated in the process of land development.[1] This is an annual grass growing erect to bent in small tufts with stems up to 40 centimeters long. The inflorescence is a green spike up to 6.5 centimeters long made up of awned
spikelets between 1 and 2 centimeters long.
Hordeum intercedens originated via long-distance dispersal of a southern South American foxtail barley but the annual Hordeum euclaston occurring in Central and western Argentina and Uruguay. It is also only distantly related to the crop barley, from which the lineage leading to H. intercedens diverged about 12 million years ago. H. intercedens is one of the parental species of Hordeum depressum.
Literature
- F. R. Blattner (2006). "Multiple intercontinental dispersals shaped the distribution area of Hordeum (Poaceae)". New Phytologist. 169 (3): 603โ614. PMID 16411962.
- F. R. Blattner (2009). "Progress in phylogenetic analysis and a new infrageneric classification of the barley genus Hordeum (Poaceae: Triticeae)". Breeding Science. 69 (5): 471โ480. .
- T. Pleines & F. R. Blattner (2008). "Phylogeographic implications of an AFLP phylogeny of the American diploid Hordeum species (Poaceae: Triticeae)". Taxon. 57 (3): 875โ881. .
References
External links