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Savannah Panic Grass

Panicum gymnocarpon Elliott

Comprehensive Description

provided by North American Flora
Panicum gymnocarpon Ell. Bot. S. C. & Ga. 1: 117. 1816
Panicum monachnoides Desv. Opusc. 86. 1831.
Panicum Drummondii Nees; Steud. Syn. Gram. 63. 1854.
Phanopyrum gymnocarpon Nash, in Small, Fl. SE. U. S. 104. 1903.
Plants perennial, with a succulent, decumbent or creeping base, sometimes as much as 2 meters long, rooting at the nodes, glabrous throughout; culms erect or ascending, 60-100 cm. high, rather thick and succulent; nodes often dark-colored; leaf-sheaths shorter than the internodes, sometimes ciliate near the summit; ligule membranaceous, about 1 mm. long, decurrent down the margin of the sheath; blades linear-lanceolate, 20-35 cm. long, or the upper and lower shorter, usually 15-25 mm. wide, flat, scarcely narrowed at the cordate, sparingly ciliate base, narrowed from about the middle to the acute apex, the margins very scabrous; panicles finally exserted, 20-40 cm. long, about three fourths as wide, consisting of several to many racemes, solitary or fascicled along a main axis, the racemes stiffly ascending, or somewhat spreading, the middle 8-12 cm. or occasionally as much as 18 cm. long, usually spikelet-bearing from base, the spikelets short-pediceled on short, appressed branchlets, thus appearing in somewhat scattered clusters; spikelets 6-7 mm. long, about 1.2 mm. wide, and, by the spreading 3 : 1-88. Hypocreales : Nectriaceae, Hypocreaceae. Fimetariales : Chaetomiaceae, Fimetariaceae.
7 : 1-82. Ustilaginales : Ustilaginaceae, Tilletiaceae.
7: 83-160. Uredinales : Coleosporiaceae, Uredinaceae, Aecidiaceae (pars).
7*: 161-268. (Uredinales:) Aecidiaceae (pars).
9 1 : 1-72. (Agaricales :) Polyporaceae (pars).
9 1 : 73-132. (Agaricales:) Polyporaceae (conclusio).
9 s : 133-200. (Agaricales:) Boletaceae, Agaricaceae (pars).
9*: 201-296. (Agaricales:) Agaricaceae (pars).
10 l : 1-76. (Agaricales :) Agaricaceae (pars).
15 l : 1-75. Sphagnales : Sphagnaceae. Andreaeales : Andreaeaceae. Bryales: Archidiaceae, Bruchiaceae, Ditrichaceae, Bryoxyphiaceae, Seligeriaceae.
15: 77-166. (Bryales :) Dicranaceae, Leucobryaceae.
16 l : 1-88. Ophioglossales : Ophioglossaceae. Marattiales : Marattiaceae. Filicales : Osmundaceae, Ceratopteridaceae, Schizaeaceae, Gleicheniaceae, Cyatheaceae (pars).
17 l : 1-98. Pandanales : Typhaceae, Sparganiaceae. Naiadales : Zannichelliaceae, Zosteraceae, Cymodoceaceae, Naiadaceae,Lilaeaceae. Alismales : Scheuchzeriaceae, Alismaceae, Butomaceae. Hydrocharitales : Elodeaceae, Hydrocharitaceae. Poales: Poaceae (pars).
17 1 : 99-196. (Poales:) Poaceae (pars).
22 1 : 1-80. Rosales : Podostemonaceae, Crassulaceae, Penthoraceae, Parnas-
22 2 : 81-192. (Rosales :) Saxifragaceae, Hydrangeaceae, Cunoniaceae, Iteaceae, Pterostemonaceae, Hamamelidaceae, Altingiaceae , Phyllonomaceae.
22 s : 193-292. (Rosales:) Grossulariaceae, Platanaceae, Crossosomataceae, Connaraceae, Calycanthaceae, Rosaceae (pars).
22*: 293-388. (Rosales:) Rosaceae (pars).
22*: 389-480. (Rosales :) Rosaceae (pars).
25 1 : 1-88. Geraniales : Geraniaceae, Oxalidaceae, Erythroxylaceae, Linaceae.
25 s : 89-171. (Geraniales:) Tropaeolaceae, Balsaminaceae, Limnanthaceae, Koeberliniaceae. Zygophyllaceae, Malpighiaceae.
25 s : 173-261. (Geraniales:) Rutaceae, Surianaceae, Simaroubaceae, Bur-
29 l : 1-102. Ericales : Clethraceae, Monotropaceae, Lennoaceae, Pyrolaceae,
Ericaceae. 34*: 1-80. (Carduales:) Carduaceae (pars). 34 2 : 81-180. (Carduales:) Carduaceae (pars). /
bibliographic citation
George Valentine Nash. 1915. (POALES); POACEAE (pars). North American flora. vol 17(3). New York Botanical Garden, New York, NY
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North American Flora

Physical Description

provided by USDA PLANTS text
Perennials, Aquatic, leaves emergent, Terrestrial, not aquatic, Stolons or runners present, Stems trailing, spreading or prostrate, Stems nodes swollen or brittle, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems solitary, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems with inflorescence 1-2 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostl y cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath or blade keeled, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blades 1-2 cm wide, Leaf blades 2 or more cm wide, Leaf blades mostly flat, Leaf blades mostly glabrous, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence an open panicle, openly paniculate, branches spreading, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence branches more than 10 to numerous, Flowers bisexual, Spikelets pedicellate, Spikelets dorsally compressed or terete, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets with 2 florets, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating above the glumes, glumes persistent, Rach illa or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes equal to or longer than adjacent lemma, Glume equal to or longer than spikelet, Glumes 3 nerved, Glumes 4-7 nerved, Lemma coriaceous, firmer or thicker in texture than the glumes, Lemma 5-7 nerved, Lemma glabrous, Lemma apex acute or acuminate, Lemma awnless, Lemma margins thin, lying flat, Lemma straight, Lemma arcuate, Palea present, well developed, Palea about equal to lemma, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.
Dr. David Bogler
Missouri Botanical Garden
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