1  Plants with foliage striped with white or yellow or uniformly blue, blue gray not uniformly green.

1 Plants with foliage uniformIy green.

2 Foliage uniformly blue, blue gray, or giaucous.

2 Foliage with yellow or white stripes.

3 Plants 6-10 inches tall. - Festuca ovine 'Glauca' Blue Fescu

3 Plants 12-30 inches tall.

4  Leaves 1/8-3/16 inches wide, mostly basal or on short stems roots fibrous. - Helictotrichon sempervirens Blue Oat Grass

4  Leaves 1/2-5/8 inches wide, basal or arising from a visible stem rhizomes present. - Elymus arenarius Lyme Grass

5 Leaves with horizontal yellow bands. - Miscanthus sinensis Zebrinus' Zebra Grass

       5 Leaves with longitudinal yellow or white stripes.

6  Plants with fibrous root systems.

6  Plants with rhizomes, stolons, or corms (bulbous basal structures).

7  Height of plants 3-5 feet. - Miscanthus sinensis 'Variegatus' StrIped Eulalia

7   Height of plants 20 inches or less.

8  Leaves 3l1 6-l l4 inches wide, arching, tapering at the end, curied, forming low dense mounds often an indoor potted plant rarely flowering, if so, on triangular stems. - Carex morrowii 'Expaillda' Japanese Sedge Grass

8  Leaves 1 l4-3l8 inches wide, upright if basal, not in curied mounds grown outdoors flowers common, on round stems. - Molinia caerulea 'Variegata' Purple Moor Grass

9  Leaf arrangement tan-shaped, arising directly from a visible rhizome Qike a miniature Iris) blades slender and with no midrib indoor potted plant. - Acorus gramineus 'Variegatus' Japanese sweet Flag

9  Leaf arrangement not fan-shaped, basal or along a stem rhizome, if present, underground blades with a midrib.

10 Plants with 20-36 inches long trailing stems (stolons) usually an indoor potted plant for hanging baskets. - Oplismenus hirtellus 'Variegatus' Basket Grass 

10 Plants with upright stems or, ft long trailing, with rhizomes, not stolons.

11 Leaves 30 inches long or more. - Spartina pectinata Aurea-marginata 'Cord Grass

11 Leaves rarely longer than 10 inches.

12 Plants with miniature corms at base of stem. - Arrhenatherum elatius subsp. bulbosum 'Variegatum' Bulbous Oat Grass

12 Plants with rhizomes.

13 Leaves and stems essentially smooth, without hairs plants 2-5 feet tall. - Phalaris arundinacea Picta 'Ribbon Grass

 13 Leaves and stems soft and velvety, covered with short, soft hairs plants 8-20 feet tall. - Hoicus mollis Variegatus' Velvet Grass

14  Plants with visible hard, teardrop seeds (beadlike), ¼½ inches long, ¼ inches wide gray, white, or black. - Coix laccyma-jobi Job's Tears

14  Plants with smaM seeds, enclosed in papery bracts not black, round, or beadlike.

15 Height of plants less than 4 feet.

16 Leaves 1-3 inches wide, conspicuously 2 ranked.- Arundo donax Giant Reed

 16 Leaves rarely wider than 1 inch, 2 ranked but not so conspicuous.

17 Soft conspicuous hairs absent spikelets essentially smooth.

18 Inflorescence at least 20 inches long, often 2-3 feet long, open and very short. - Cortaderia selloana Pampas Grass

18 Inflorescence rarely over 20 inches long, never 2-3 feet long.

19 Leaves ¼ inches wide, midvein conspicuously white. - Miscanthus sinensis 'Graciillmus' Maiden Grass

19 Leaves ½ 1” wide,

20 Ligule a small ring of hairs. 1l8long or less plants 5-8 feet tall inflorescence with several slender branches, each 4-5 inches long.

20 Ligule a dense ring of hairs, 1 l4-112 inches long plants 8-15 feet tall inflorescence on 1 main stem, 10-20 inches long, becoming soft and dense with age. - Erianthus ravennae Plume Grass

21 Hairs on the inflorescence white or ivory plants with rhizomes. - Miscanthus sacchariflorus Eulalia Grass

21 Hairs on the inflorescence yellow or beige. - Miscanthus sinensis Eulalia Grass

22 Inflorescence 20-30 inches long. - Cortaderia selloana Pampas Grass

22 Inflorescence less than 14 inches long.

23 Leaves 20-40 inches long, less than 3l1 6 inches wide. - Eragrostis curvula Weeping Love Grass 

23 Leaves rarely over 1 6 inches long, ½ inches wide.

24            Inflorescence on 1 mair, stem, stiff, narrow and upright, in upright spikes. -Hystrix patula - Bottlebrush Grass

24            Inflorescence open, branched, nodding or spreading.

25 spikelets very small, 1l8 inches long. - Panicum virgatum Switch Grass

25 spikelets ¾-1¼ inches long, conspicuously flattened. - Chasmanthium latifolium Northern Sea Oats

26  Plants with dark green, leathery leaves, 1 l4-¾+ wide, 20-30 inches long, evergreen, with grooves or folds in the leaves. - Carex pendula Sedge Grass 

26  Plants with medium-light-green leaves, rarely ¾ inches wide, if so, never 20-30 inches long not evergreen or leathery.

27 Inflorescence a spike or spikelike, along one main stem, secondary branches very small, if any bristles or awns present or absent.

28 Flowers pink or ruby red,turning silvery white with age spikelets covered with conspicuous soft hairs.- Rhynchelytrum repens Ruby Grass

28 Flowers beige, green, or white spikelets smooth or covered with very short hairs,

29 Plants 2-4 feet tall,

30 Inflorescence 4-7 inches long, spikelets coarse, 1 1 12-2 inches long, with awns 1 12-1” long. - Bromus macrostachys Brome Grass

30 Inflorescence 2-4 inches long, spikelets less than ¾ inches long, awns minute or absent.

31 spikelets less than 1l16 inches wide intlorescence finely branched plants very fine textured. - Aira caryophyllea var. pulchella Hair Grass

31 spikelets 1/8-3/8 inches wide, inflated, papery and light plants fine to medium textured.

32 Plants 18-24 inches tall spikelets 1 12-¾ inches long, nodding and inflated. - Briza maxima Big Quaking Grass

 32 Plants 8-12 inches tall spikelets 1l6long or less, heart-shaped, upright and spreading. - Briza minor Little Quaking Grass

33 Plants annual, leaves dying after flowering is completed. - Apera spica-venti Loose Silky Bent Grass 

33 Plants perennial, leaves green after flowering.

34 Inflorescence 3-4 inches long. - Briza media Quaking Grass

34 Inflorescence 9-20 inches long.

35 Ligule ¼ inches long inflorescence never wider than 6 inches, fairly upright. - Deschampsia caespitosa Tufted Hair Grass

35 Ligule a ring of sparse hairs or absent inflorescencetPl:12 inches wide at maturity, arching, nodding, rarely, if ever, upright. - Eragrostis trichodes Sand Love Grass

36  spikes 1 inch-2 inches long, one-sided (like a comb), perpendicular to the main flowering stem. - Bouteloua gracilis Blue Grama

36  spikes longer than 1-2 inches. or if 1-2 inches long, the spikelets placed on all sides of the flowering stem.

37  Bristles or awns less than 1 inch long or absent spikes very dense, soft and compacted.

38 Leaves 1-3 feet long.

39 Bristles 3-4 inches long total spike 2-4 inches long, nodding, shining and silky. - Hordeum jubatum Squirrel's Tail Grass

39 Bristles ¾-1½ inches long spikes 5-l 8 inches long, stift and upright. - Hystrix patula - Bottlebrush Grass

40 Inflorescence tawny, beige, or light green, 3-5 inches long. -Pennisetum villosum Feather Top Grass

40 Inflorescence coppery tan, purple, or brown, 6-1 2 inches long.

41 Leaves 1 l8-3l16 inches wide spikes purple, 9-12 inches long annual in cold climates. - Pennisetum setaceum Crimson Fountain Grass

41 Leaves 1 l4-3l8 inches wide spikes coppery tan or reddish brown, 6-8 inches long perennial. - Pennisetum alopecuroides Fountain Grass

42 Leaves soft and velvety inflorescence in soft, dense, woolly'heads,” 1-2 inches long, rarely longer. ¾-1” wide. - Lagurus ovatus Hare's Tail Grass

 42 Leaves smooth, not velvety inflorescence soft, dense, 2-6 inches long, ½-¾ inches wide. - Polypogon monspeliensis Rabbit's - Foot Grass