Elliott's Bluestem

Andropogon perangustatus Nash, in Small, Fl. SE
U. S. 62. 1903.
Andropogon virginicus viridis stenophyllus Hack, in DC. Monog. Phan. 6: 411. 1889 Not A stenophyllus R. & S. 1817.
Stems 2-8 dm. tall, slender, the branches usually single, sometimes in pau-s ; leaf-sheaths glabrous; Ugule 1-1.5 mm. long, rounded or acutish at the summit; blades 3 dm. long or less. 1-2 mm. wide, those on the mnovations much compressed laterally, grooved or furrowed on the upper side, those on the stem flat, puberulent on the upper surface; spathes 4-5 cm. long, ext^ding beyond the summit of the racemes which are in pairs, 2.5-4 cm. long; sessile spikelet 4.5-5 mm, long, one and a half times to twice as long as the internodes, the awn 12-18 mm. long ; pedicellate spikelet wanting, or rarely present as a minute scale, the pedicel exceeding the sessile spikelet.
Type locality : Florida.
Distribution : Georgia and Florida to Mississippi.

Andropogon gyrans Ashe, Jour. Elisha Mitchell Soc 15 : 113. 1898
Andropogon gracilior '^Q.sh., in Small, Fl. SE. U. S. 63. 1903.
Stems tufted, 5-8 dm. tall, 2-3 times as long as the basal leaves, the nodes at the base of the inflated sheaths densely barbed; leaf-sheaths shorter than the internodes, the lower ones and those of the innovations often appressed-hirsute, those of the inflorescence much enlarged and densely crowded at the summit and also sometimes at the nodes below, 5-11 cm. long, 2-6 mm. wide; blades 2 dm. long or less, 2-5 mm. wide, usually smooth beneath, rough above and hirsute near the base; racemes in pairs, very rarely in 3's, 2-4 cm. long, one peduncle at each node exserted from the spathe, the remainder with the racemes concealed; sessile spikelet 3.5-5 mm. long, narrowly linear-lanceolate, equaling or somewhat exceeding the internodes, the. first scale very acute, the keels hispidulous, the fourth scale 2-cleft for about one quarter of its length, awned from between the teeth, the awn geniculate, 1.5-2.5 cm. long, usually spiral at the base, the column exserted, much shorter than the subula; pedicellate spikelet a rudimentary scale, the pedicel usually much longer than the sessile spikelet.
Type locality : Wet or dry pine barrens, Florida. Distribution : Southern New Jersey to Florida, Missouri, and Texas.

Andropogon subtenuis Nash, in Small, Fl. SE. U. S. 63. 1903
Stems 3-6 dm. tall, slender, the branches single; leaf-sheaths smooth and glabrous; blades 1.5 dm. long or less, 1-2 mm. wide, smooth beneath, rough above and usually somewhat hirsute near the base; racemes in pairs, exserted, or a little included in the narrow spathe, 2-3 cm. long;, sessile spikelet 3.5-4 mm. long, exceeding the internodes, the basal hairs shorter than the spikelet, the first scale hispidulous above on the keels, the intercarinal space flat or somewhat depressed, the awn 1-1.5 cm. long, more or less contorted, slightly twisted at the base; pedicellate spikelet wanting, or a minute rudimentary scale, the pedicel considerably exceeding the sessile spikelet.
Type locality: Biloxi, Mississippi. Distribution : Florida to Mississippi.

Andropogon campyloracheus Nash, Bull. N. Y. Bot
Gard. 1: 431. 1900.
Andropogon Elliottii laxijlorus Scribn. Bull. Torrey Club 23: 146. 1896. Not A. laxiflorus Steud. 1854.
Stems densely tufted, 4-8 dm. tall, the terminal internode much elongate and slender, the branches single; leaf-sheaths much exceeding the internodes, overlapping, those on the Pari 2, 1912] POACEAB
117
stem 13-17 cm. long, sparingly hirsute, those on the innovations densely hirsute with ascending hairs, the terminal one very narrow and tightly embracing the stem, the upper sheaths on some of the stems much enlarged and producing in their axils smaller spathes with concealed racemes ; blades erect, 2 dm. long or less, 2-3 mm. broad, smooth beneath, hirsute above near the base; racemes in 2's~4's, flexuous, 5-10 cm. long; sessile spikelet 5 mm. long, usually much exceeded by the internodes, the terminal hairs of which are 8-10 mm. long, the awn more or less contorted, 1.5-2 cm. long, barely if at all twisted at the base; pedicellate spikelet wanting, or present as a minute rudimentary scale, the pedicel much exceeding the sessile spikelet.
Type locality : Eustis, I^ake County, Florida. Distribution : Florida and Mississippi.

Perennials, Terrestrial, not aquatic, Rhizomes present, Stems nodes swollen or brittle, Stems erect or ascending, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or po lygonal, Stems branching above base or distally at nodes, Stem internodes solid or spongy, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly basal, below middle of stem, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath hairy, hispid or prickly, Leaf sheath and blade differentiated, Leaf sheath enlarged, inflated or distended, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blade margins folded, involute, or conduplicate, Leaf blades mostly glabrous, Leaf blades more or less hairy, Ligule present, Ligule an unfringed eciliate membrane, Ligule a fringed, ciliate, or lobed membrane, Inflorescence terminal, Inflorescence lateral or axillary, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence a panicle with narrowly racem ose or spicate branches, Inflorescence with 2-10 branches, Inflorescence branches paired or digitate at a single node, Flowers bisexual, Flowers unisexual, Spikelets pedicellate, Spikelets sessile or subsessile, Spikelets laterally compressed, Inflorescence or spikelets partially hidden in leaf sheaths, subtended by spatheole, Spikelet less than 3 mm wide, Spikelets with 2 florets, Spikelets paired at rachis nodes, Spikelets in paired units, 1 sessile, 1 pedicellate, Pedicellate spikelet rudimentary or absent, usually sterile, Spikelets bisexual, Spikelets unisexual, Inflorescence disarticulating between nodes or joints of rachis, rachis fragmenting, Spikelets disarticulating below the glumes, Spikelets falling with parts of disarticulating rachis or pedicel, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes equal to or longer than adjacent lemma, Glumes keeled or winged, Glume surface hairy, villous or pilose, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma 1 nerved, Lemma 3 nerved, Lemma glabrous, Lemma apex dentate, 2-fid, Lemma distinctly awned, more than 2-3 mm, Lemma with 1 awn, Lemma awn 2-4 cm long or longer, Lemma awn from sinus of bifid apex, Lemma margins thin, lying flat, Lemma straight, Callus or base of lemma evidently hairy, Callus hairs shorter than lemma, Stamens 1, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis.