Part 7 - UNC Herbarium

POACEAE 905
6 Plants mostly widely spreading; leaves hirsute; spikelets glabrous or pubescent; sterile lemma midnerve
present or absent........................................................................................................ P. setaceum var. supinum
1 Leaves glabrous to glabrate (if glabrate, also see var. stramineum in couplet 5).
7 Blades crowded toward the base, often recurved, 3-8 mm wide; spikelets 1.4-1.9 mm long, usually glabrous..................
................................................................................................................................ P. setaceum var. longepedunculatum
7 Blades not especially crowded toward the base, erect, ascending or spreading, 2-20 mm wide; spikelets 1.6-2.6 mm
long, pubescent or glabrous.
8 Blades 3-8 mm wide; spikelets 1.6-1.9 mm long, pubescent, subacute; [of GA and FL southward] ..........................
......................................................................................................................................................... [P. propinquum]
8 Blades 2-20 mm wide; spikelets 1.7-2.6 mm long (if < 2.0 then larger leaves usually > 7 mm wide), glabrous or
pubescent, rounded to blunt; [plants of FL northward and westward].
9 Plants stiffly erect; blades 2-6 mm wide; spikelets 2.0-2.6 mm long; [of GA and FL] .......................................
............................................................................................................................. P. setaceum var. rigidifolium
9 Plants erect to spreading; blades 3-20 mm wide; spikelets 1.7-2.6 mm long; [of NJ to TX]...............................
.............................................................................................................................P. setaceum var. ciliatifolium
Paspalum acuminatum Raddi, Brook Paspalum, Canoe Grass. Pd (GA): wet areas, often disturbed; rare, possibly only
adventive in our area. C. GA and ne. TX south to s. FL and s. TX, south through the New World tropics to s. South America. [=
FNA, HC, K]
Paspalum bifidum (Bertoloni) Nash, Pitchfork Paspalum, Pitchfork Crown Grass. Cp (GA, NC, SC, VA), Pd (GA, SC):
mesic to wet longleaf pine savannas and mesic swales in sandhills; uncommon (NC Watch List, VA Rare). August-October. Se.
VA south to s. FL, west to se. MO, se. OK, and e. TX. [= RAB, C, GW, HC, K, S, Y; > P. bifidum var. bifidum – F, G; > P.
bifidum var. projectum Fernald – F, G]
Paspalum boscianum Flügge, Bull Paspalum. Cp, Pd (GA, NC, SC, VA), Mt (GA, SC, VA): low fields, ditches; common
(VA Watch List). July-October. MD, KY, and TX south through tropical America. [= RAB, C, F, FNA, G, GW, HC, K, S, W,
Y]
* Paspalum conspersum Schrad., Scattered Paspalum. Cp (GA): roadsides, other disturbed areas; rare, introduced from a
native range of Mexico to South America. [= FNA] {synonymy incomplete}
* Paspalum coryphaeum Trinius, Emperor Crown-grass. Pd (NC): disturbed areas; rare, native of South America. [= FNA,
K] {synonymy incomplete}
* Paspalum dilatatum Poiret, Dallis Grass. Cp, Pd, Mt (GA, NC, SC, VA): roadsides, fields, disturbed areas; common,
introduced from tropical America. May-October. [= RAB, C, F, FNA, G, GW, HC, K, S, W, Y]
Paspalum dissectum (Linnaeus) Linnaeus, Mudbank Crown Grass, Walter Paspalum. Cp (GA, NC, SC, VA), Pd (NC, SC):
mud flats, drawdown zones; rare (NC Rare, VA Rare). September. NJ, IL, and KS south to s. FL and e. TX; Cuba. [= RAB, C,
F, FNA, G, GW, HC, K, S, Y]
Paspalum distichum Linnaeus, Joint Paspalum, Knotgrass. Cp (GA, NC, SC, VA), Pd (GA, NC, SC), Mt (NC): brackish
and freshwater marshes; uncommon (VA Rare). June-August. NJ, KS, and WA south to s. FL, s. TX, s. CA and through the
New World and Old World tropics. [= RAB, C, F, FNA, G, HC, K, S, W, Y; < P. distichum – GW (also see P. vaginatum); = P.
paspaloides (Michaux) Scribner]
Paspalum floridanum Michaux, Florida Paspalum. Cp, Pd, Mt (GA, NC, SC, VA): wet forests, pine savannas; common
(rare in Mountains). August-October. NJ, IL, and KS south to s. FL and e. TX. [= RAB, C, FNA, GW, K, W; > P. floridanum –
G; > P. difforme Le Conte – G, HC, S, Y; > P. floridanum var. floridanum – F, HC, S, Y; > P. floridanum var. glabratum
Engelmann ex Vasey – F, HC, S, Y; > P. giganteum Baldwin ex Vasey – HC, S, Y]
Paspalum fluitans (Elliott) Kunth, Water Paspalum, Horsetail Crown Grass. Cp (GA, NC, SC, VA), Pd (NC, VA): mucky
soils in swamp forests; uncommon (NC Watch List). October. MD, IL, and KS south to s. FL and s. TX, and south through
tropical America to c. South America. [= RAB, C, F, G, HC, K; = P. repens P.J. Bergius – FNA, GW, S, Y]
* Paspalum intermedium Munro ex Morong. Cp (GA): drainage canals; rare, introduced from South America. Escaped in
sc. GA (Tift County, where growing along drainage canals in Tifton) (Jones & Coile 1988). [= FNA, HC, K]
Paspalum laeve Michaux var. circulare (Nash) Stone. {GA, NC, VA}: {need additional herbarium work to fully
determine range and abundance of varieties} June-August. [= F; < P. laeve – RAB, C, FNA, G, GW, K, W; = P. circulare Nash
– HC, S, Y]
Paspalum laeve Michaux var. laeve. Cp, Pd, Mt (GA, NC, SC, VA): forest edges and disturbed areas; common. {need
additional herbarium work to fully determine range and abundance of varieties} June-August. Overall distribution of P. laeve
s.l.: MA, NY, MI, and KS south to s. FL and e. TX. [< P. laeve – RAB, C, FNA, G, GW, K, W; > P. laeve var. laeve – F; > P.
laeve var. pilosum Scribner – F; > P. laeve – HC, S, Y; > P. longipilum Nash – HC, S, Y]
* Paspalum malacophyllum Trinius, Ribbed Paspalum. Cp (GA): disturbed areas; rare, introduced from a native range of
Mexico to South America. [= FNA, HC]
* Paspalum nicorae Parodi, Brunswickgrass. Cp (GA): disturbed areas; rare, introduced from Brazil. [= FNA, HC, K]
* Paspalum notatum Flügge, Bahia Grass. Cp (GA, NC, SC, VA), Pd (GA, SC, VA), Mt (GA): roadsides and disturbed
areas; uncommon, introduced from tropical America. June-October. [= FNA, G, GW, Y; > P. notatum var. notatum – HC, K; >
P. notatum Flügge var. saurae Parodi – RAB, HC, K]
Paspalum plicatulum Michaux, Brownseed Paspalum. Cp (GA, SC): pine savannas, fields; uncommon. May-July. Se. SC
south to s. FL, west to s. TX, and south through tropical America to s. South America. [= RAB, FNA, GW, HC, K, S, Y]