''Calamagrostis × acutiflora'', called feather reed-grass, is a naturally occurring hybrid species of grass in the genus ''

Calamagrostis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'', occasionally found in Europe and Asia. Its cultivar 'Karl Foerster' has gained the

Royal Horticultural Society The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr (No ...

Award of Garden Merit The Award of Garden Merit (AGM) is a long-established annual award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. History The Award of Garden Merit ...

. It is a hybrid of '' Calamagrostis arundinacea'' and '' Calamagrostis epigejos'', both widespread Eurasian species.

References

acutiflora Plants described in 1815 Flora of Europe Flora of Asia Ornamental plants Plant nothospecies {{Pooideae-stub