Key to blown-grass species (Lachnagrostis spp.)

The following dichotomous key can be used as a guide to identifying a particular blown-grass species. The key works by selecting one of the two choices given for each pair of descriptions, which lead to either another pair or the identification of your species.

1.	Leaves flat when fresh		2
1.	Leaves inrolled or closely folded		3
2.	Leaves less than 3 mm wide		Lachnagrrostis filiformis (Common Blown-grass)
2.	Leaves greater than 3 mm wide		Lachnagrrostis billardierei (Coast Blown-grass)
3.	Florets awnless or with short non-bent awns		4
3.	Florets with long, sharply bent awns		5
4.	Florets more or less awnless		Lachnagrrostis leviseta (Awnless Blown-grass)
4.	Florets with awns 1.5-3mm long		Lachnagrrostis adamsonii (Adamson’s Blown-grass)
5.	Upper part of florets with rough surface		Lachnagrrostis robusta (Salt Blown-grass)
5.	Upper part of florets smooth		Lachnagrrostis punicea (Purple Blown-grass)

Purple Blown-grass (L. punicea ssp. punicea)

Salt Blown-grass (L. robusta)

Adamson’s Blown-grass (L. adamsonii)

Common Blown-grass (L. filiformis)

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