Mexican Feather Grass

Delicate and graceful leaves and airy flower heads sway gently with the slightest breeze. Readily reseeds to naturalize in meadows or on slopes. Combine with Sedums and Asters or tuck into a rock garden. Not recommended for California gardens, where it has been identified as invasive. Herbaceous.

https://www.monrovia.com/plant-catalog/plants/1150/mexican-feather-grass/

 

Mexican feather grass is a densely tufted, perennial tussock grass up to 70 cm tall (Figure 1). It is very similar to serrated tussock and indistinguishable from it except by the flowers and flowering heads. Tussocks are distinctly white in winter (Henderson 2001). The leaves are very numerous, fine, bristly, tightly rolled, rough to touch and up to 60 cm long (0.25–0.5 mm in diameter). Culms (stems bearing the flowers) are up to 70 cm high, with 2–3 unthickened nodes; smooth, hairless and round in cross-section between the nodes. The flower-bearing section of the culm is 15–25 cm long and green or purplish in appearance due to the colour of the glumes (lowermost of the bracts around the flowers). The lower section is enclosed by a leaf-like sheath. Unlike serrated tussock, the mature seed head does not always fully project and spread from this sheath and the flowering stem apparently does not break at the uppermost stem node when mature. The flowers have a single, bisexual floret per spikelet,

https://www.daf.qld.gov.au/__data/assets/pdf_file/0017/64160/IPA-Mexican-Feather-Grass-Risk-Assessment.pdf

Stipa tenuissima Trin.-가는잎나래새