Part 7 - UNC Herbarium

POACEAE 912
species withers and disintegrates shortly after flowering; its ephemeral habit may be responsible for its being overlooked in our
area for many years. [= C, F, G, HC, K]
Poa palustris Linnaeus, Fowl Bluegrass, Fowl Meadow-grass. Mt (NC, SC, VA), Pd (VA): meadows, moist areas; rare
(NC Rare, VA Rare). June-July. Circumboreal, south in North America to VA, w. NC, MO, and NM. [= RAB, C, F, G, HC, K,
W, Z]
* Poa pratensis Linnaeus, Kentucky Bluegrass, Junegrass, Speargrass. Mt, Pd (GA, NC, SC, VA), Cp (NC, SC, VA): lawns,
roadsides, disturbed areas; common, introduced from Europe. April-August. [= RAB, C, F, G, HC, W, Z; P. pratensis ssp.
pratensis – K]
Poa saltuensis Fernald & Wiegand, Old-pasture Bluegrass. Mt (NC, VA): northern hardwood forests, ultramafic outcrop
woodlands, barrens, and glades; rare (NC Rare, VA Rare). April-May. Newfoundland west to MN, south to PA, w. VA, and w.
NC. The NC occurrences (on serpentinized olivine barrens) reported as P. languida are actually P. saltuensis. The taxonomic
distinctions between P. saltuensis and P. languida have been controversial; Haines (2004) provides a detailed and valuable
discussion. [= C, F, G, HC, W; < P. languida – RAB, Z, misidentification; = P. saltuensis var. saltuensis – F; < P. saltuensis –
K (also see P. languida); = P. saltuensis ssp. saltuensis – Y]
Poa sylvestris A. Gray, Forest Bluegrass. Mt, Pd, Cp (GA, NC, SC, VA): moist forests; common. April-May. NY west to
WI and IA, south to FL and TX. [= RAB, C, F, G, GW, HC, K, W, Z]
* Poa trivialis Linnaeus, Rough Bluegrass. Mt, Pd (NC, VA), Cp (VA), {GA}: moist forests, disturbed areas, bottomlands;
common, introduced from Europe. April-June. [= RAB, C, F, G, GW, HC, K, W, Z]
Poa wolfii Scribner. Mt (NC, VA): moist rich forests; rare (VA Rare). {} OH west to MN, south to n. VA, MO, and e.
NE. The NC occurrence is based on material from Great Smoky Mountains National Forest (Haywood County) (K. Langdon,
pers. comm.. 2006). [= C, F, G, HC, K, W, Z]
* Poa infirma Kunth. Introduced in SC (Kartesz 1999), but not attributed to any e. North American area in FNA (in prep.).
{investigate} [= K] {not keyed at this time; synonymy incomplete}
References: Tucker (1996)=Z; Barkworth in FNA (in prep.).
Polypogon Desfontaines
1 Inflorescence verticillate, the rachis visible between the verticils; glumes 1.6-2.3 mm long, without awns; spikelets
disarticulating near base of pedicel; stoloniferous perennial.........................................................................................P. viridis
1 Inflorescence dense, cylindrical, and spikelike; glumes 2-3 mm long, with prominent awns 3.5-7 mm long; spikelets
disarticulating near apex of pedicel; annual.
2 Glumes deeply lobed, the awn borne between the lobes; glume ciliate-fringed; lemma 0.4-0.7 mm long, awnless ...........
.............................................................................................................................................. P. maritimus var. maritimus
2 Glumes slightly notched at the tip, the awn borne from near the tip; glume not ciliate-margined; lemma 0.7-1.1 mm
long, awned ............................................................................................................................................. P. monspeliensis
* Polypogon maritimus Willdenow var. maritimus, Meditteranean Beardgrass. Cp (GA, SC): brackish marshes; rare,
introduced from Meditteranean Europe. P. maritimus Willdenow is reported as introduced to GA (Small 1933). [< P. maritimus
– HC, K, S, Z]
* Polypogon monspeliensis (Linnaeus) Desfontaines, Rabbitfoot Grass, Beardgrass, Annual Beardgrass. Cp (GA, NC, SC,
VA), Pd (GA): brackish marshes, disturbed areas; uncommon, introduced from s. Europe and w. Asia. May-July. [= RAB, C, F,
G, GW, HC, K, S, Z]
* Polypogon viridis (Gouan) Breistr., Water Bent-grass. Cp (SC): introduced on ballast around old ports, probably not
persistent; rare, introduced from the Old World. Distinguished from Agrostis in having the spikelet falling as a whole,
disarticulating below the glumes. [= K, Z; = Agrostis viridis Gouan – C; ? Agrostis verticillata Villars – F; ? Agrostis
semiverticillata (Forskål) C. Christensen – G, HC]
Pseudosasa Makino ex Nakai (Arrow Bamboo)
References: Duncan & Duncan [in prep.]=Z; Judziewicz et al. (2000)=Y. Key adapted from Z.
* Pseudosasa japonica (Siebold & Zuccarini ex Steudel) Makino ex Nakai, Arrow Bamboo. Cp (VA): cultivated as an
ornamental, persistent or spreading from plantings; rare, native of Japan. [= K, Y, Z; = Sasa japonica (Siebold & Zuccarini ex
Steudel) Makino]
A genus of about 80 species, north temperate.
Puccinellia Parlatore (Alkali Grass, Goosegrass)