Poa alpina
Species of grass
From Wikipedia, the free encyclopedia
Poa alpina, commonly known as alpine meadow-grass[1] or alpine bluegrass,[2][3] is a species of grass with a primarily holarctic distribution.[4]
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| Poa alpina | |
|---|---|
| |
| A pseudoviviparous plant | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Poaceae |
| Subfamily: | Pooideae |
| Genus: | Poa |
| Species: | P. alpina |
| Binomial name | |
| Poa alpina | |
It is noted for being pseudoviviparous: in place of seeds, it sometimes reproduces asexually, creating new plantlets in the spikelets. The plantlets represent a developmental change following sexual reproduction, as the spikelet apical meristems revert to vegetative growth following the production of floral tissue, producing an axis with true leaves. These plantlets can produce roots and fall off, but typically their growth on the mother plant and the senescence of the main stem makes the entire structure lean over and touch the ground, where the mass of plantlets and roots can establish together. This vegetative reproduction mechanism is thought to be an advantage in variable alpine environments where pollination and sexual reproduction is inconsistent[5].
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