No key was found for the requested taxon, but it has only one child: Molinia caerulea. Showing where it is keyed below.

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Key to Poaceae, Key B: robust herbaceous grasses

Poaceae

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1 Inflorescence an array of spikes, the spikelets closely imbricate in 2 rows along the rachis of the spikes, the spikes alternate along the primary inflorescence axis; [tribe Zoysieae; subtribe Sporobolinae]
1 Inflorescence otherwise, either the spikelets embedded or in grooves in an thickened rachis, or the inflorescence a slender or broad panicle.
  2 Spikelets embedded in the thickened rachis (the inflorescence thus like an ear of corn), or fitting into grooves in the thickened rachis (the inflorescence thus cylindrical and resembling a rat's tail). Spikelets unisexual, with male and female spikelets in separate inflorescences or in different parts of the same inflorescence; [tribe Andropogoneae].
    3 Racemes of mixed sex (female below, male above)
    3 Racemes of single sex
 Zea
  2 Spikelets not embedded or fitting into grooves in the rachis, the inflorescence a slender or broad panicle (the spikelets visibly separate and often pedicelled).
      4 Spikelets with a single floret, this unisexual (either pistillate or staminate); plants with aerenchymatous culms, [plants of seasonally or tidally flooded wetlands]; [tribe Oryzeae].
        5 Pistillate spikelets on the upper branches of the panicle, staminate spikelets on the lower branches; lemmas and paleas clasping along their margins; plants annual
        5 Pistillate and staminate spikelets intermingled on the same branches of the inflorescence; lemma margins free; plants perennial
      4 Spikelets with 2 or more florets, at least some of these bisexual; plants without aerenchymatous culms, [plants of uplands or temporarily to seasonally flooded wetlands].
             7 Leaves primarily basal, plants densely cespitose.
             7 Leaves cauline; plants short to long rhizomatous, usually somewhat clumped (short rhizomatous to cespitose in Neyraudia).
                 9 Lemmas 3-veined, the apices bifid and shortly awned from between the teeth; [tribe Cynodonteae]
                 9 Lemmas 3-7 veined, the apices not bifid (instead either unawned, entire, or only minutely awned); plants rhizomatous; [tribe Arundineae]
                   10 Lemmas pilose; rachilla glabrous; plants short-rhizomatous (somewhat clumped); culms to 10 m tall; [plants of uplands or saturated or temporarily flooded wetlands]
                   10 Lemmas glabrous; rachilla sericeous; plants long rhizomatous; culms to 4 m tall; [plants of uplands or saturated, tidally flooded, or seasonally flooded wetlands]
          6 Spikelets almost always with 2 florets, the lower florets sterile or staminate (sometimes reduced to lemmas or completely absent).
(c) Hartley, Nate - CC-BY-NC, permission granted to NCBG
                     11 Spikelets falling separately, not attached to rachis segments, stalks, or bristles; spikelets <2× as long as wide; [tribe Paniceae].
                       12 Spikelets (at least the terminal) subtended by 1-many stiff, terete bristles
                            14 Fertile (upper) florets shiny and black to brown-colored when mature; the glumes abruptly apiculate and (internally) oily, the lower glume bases saccate; plants erect, arching, climbing, or decumbent; [s. FL only in our flora area]
© Lowell Urbatsch
                            14 Fertile florets not shiny and black when mature; glume apices truncate to acuminate, but not abruptly apiculate (nor internally oily); plants growing variously, but rarely arching or decumbent
© Scott Ward
                     11 Spikelets falling with attached rachis segments, stalks, or bristles; spikelets >3× as long as wide; [tribe Andropogoneae].
                              15 Pedicelled spikelet differing from the sessile in shape and sex (sometimes represented only by a pedicel).
                                       19 Spikelets awned with awns 10-26 mm long; anthers 2; [native, collectively common and widespread]
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Key to Poaceae, Key N: grasses with 2+ florets, these readily visible by extending past the glumes

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1 Plants dioecious; plants strongly rhizomatous-clonal; [plants of saline situations, coastal or more rarely inland]; [tribe Cynodonteae; subtribe Monanthochloinae]
1 Plants bisexual; plants cespitose or weakly short- rhizomatous; [plants of various habitats, including saline].
© Scott Ward
  2 Lemmas 1-3-nerved, the nerves strong and obvious; spikelets 1-27 mm long.
© Scott Ward
    3 Lemma nerves hairy; lemmas slightly to strongly 2-lobed, the midnerve shortly excurrent between the 2 lobes; [tribe Cynodonteae; subtribe Tridentinae].
      4 Palea glabrous or with hairs < 0.5 mm long; plants perennial; inflorescences exserted, conspicuous
      4 Palea long-ciliate on the upper half, the hairs 0.5-2 mm long; plants annual; inflorescences often largely hidden in the upper sheath
(c) Marcum, Paul
        5 Mature spikelets stiff; grains protruding, with a bottle-neck-like beak; [tribe Diarrheneae]
        5 Mature spikelets not stiff; grains neither protruding, nor shaped with a bottleneck-like beak.
          6 Inflorescence branches usually strongly ascendant (sometimes weakly spreading); culms often disarticulating at the first node; [tribe Arundineae]
          6 Inflorescence branches ascending, widely divergent, or nodding; culms not disarticulating at the first node; [collectively widespread, dry to wet sites]
             7 Florets 3-34 per spikelet; lemmas unawned; [tribe Eragrostideae; subtribe Eragrostidinae]
             7 Florets 2-3 per spikelet; lemmas awned or unawned; [tribe Poeae]
  2 Lemmas 5-many-nerved, the nerves often obscure; spikelets 2-70 mm long.
               8 Sheaths united for at least ½ their length.
                 9 Spikelets in dense one-sided clusters on a few stiff branches; spikelets strongly flattened; [tribe Poeae]
                 9 Spikelets in open or somewhat congested panicles, not as above; spikelets slightly to not at all flattened.
                     11 Callus of the lemma glabrous; [collectively widespread]; [tribe Bromeae]
                     11 Callus of the lemma pubescent; [of VA, WV, KY, and northward]; [tribe Meliceae]
                       12 Lower glumes 1-veined; [plants of wetlands]
                       12 Lower glumes 3-7-veined; [plants of mesic to dry habitats]
               8 Sheaths completely free or united at most up to ½ their length.
                            14 Ligule membranous (the membrane apex ciliate); lower 1-4 florets sterile; disarticulation above the glumes and between the florets; [of various, usually moist, habitats, collectively widespread]; [tribe Centotheceae]
                            14 Ligule of hairs; lower 2-8 florets sterile; disarticulation below the glumes (the spikelet falling whole); [of coastal dunes, from se. VA southward and westward]; [tribe Eragrostideae; subtribe Uniolinae]
                              15 Lemmas about as broad as long, spreading at a ca. 90° angle to the rachilla
                                  17 Inflorescence pedicels to 0.5 mm thick (if to 0.8 mm as in Sclerochloa dura then culms usually prostrate and leaves also exceeding inflorescence length); panicle branches flexible; lemmas hardened or membranous but not coriaceous at maturity.
                                    18 Inflorescences usually exceeded by the leaves (or sometimes similar in length); culms usually prostrate or procumbent (occasionally ascending); plants often compact and low-growing; mature lemmas hardened
                                    18 Inflorescences exceeding the leaves; culms usually erect; plants compact or not; mature lemmas membranous