Part 7 - UNC Herbarium

POACEAE 858
1 Spikelets (3.5-) 4-6 (-7.5) mm long; glumes firm, subherbaceous, rather dull, hyaline only narrowly and marginally, the
second glume prominently 3-nerved.................................................................................................................. C. arundinacea
1 Spikelets (2-) 2.5-4 (-5) mm long; glumes (at least the first and sometimes the second as well) glistening, hyaline except the
midrib, the second glume 1-nerved (very rarely 3-nerved) ........................................................................................ C. latifolia
Cinna arundinacea Linnaeus, Common Woodreed, Sweet Woodreed. Cp, Pd, Mt (GA, NC, SC, VA): bottomland forests,
rocky bars in rivers, other low, wet habitats; common. August-October. New Brunswick and MN south to south to GA and TX.
[= RAB, C, G, GW, K, S, W, Z; > C. arundinacea var. inexpansa Fernald & Griscom – F, HC]
Cinna latifolia (Treviranus ex Goepp.) Grisebach, Drooping Woodreed, Slender Woodreed. Mt (NC, VA): moist forests at
high elevations; rare (NC Watch List, VA Rare). June-August. Circumboreal, occurring in n. Eurasia and n. North America,
south in North America to NC, TN, n. IL, MN, UT, NM, and CA. [= RAB, C, F, G, HC, K, W, Z]
Coelorachis Brongniart (Jointgrass)
A genus of about 20 species, widespread in the Old World and New World tropics and subtropics. Generic circumscription has
been controversial and uncertain. References: Allen in FNA (2003a); Veldkamp, Koning, & Sosef (1986)=Z.
1 Culms round in cross-section................................................................................................................................. C. cylindrica
1 Culms compressed-keeled in cross-section.
2 Lower glume with rectangular pits....................................................................................................................C. tesselata
2 Lower glume smooth or with transverse ridges.
3 Lower glume with transverse ridges ............................................................................................................C. rugosa
3 Lower glume smooth ...........................................................................................................................C. tuberculosa
Coelorachis cylindrica (Michaux) Nash, Carolina Jointgrass. Pd (GA, NC, SC), Cp (GA): open woodlands and roadsides,
probably in areas formerly prairie-like and fire-maintained, perhaps now extirpated in our area; rare (NC Rare). June-August.
Fairly widespread in se. North America, north to NC and SC (at least formerly), MS, MO, and TX. [= C, FNA, K; = Manisuris
cylindrica (Michaux) Kuntze – RAB, F, G, GW, HC; = Manisuris campestris (Nuttall) A.S. Hitchcock – S; = Mnesithea
cylindrica (Michaux) Koning & Sosef – Z]
Coelorachis rugosa (Nuttall) Nash, Wrinkled Jointgrass. Cp (GA, NC, SC, VA), Pd (GA): limesink ponds (dolines),
depression meadows, clay-based Carolina bays, wet savannas, always in places with a seasonally high water-table; rare (NC
Watch List, VA Rare). June-October. A Southeastern Coastal Plain endemic: s. NJ south to FL and west to TX. [= C, FNA, K;
= Manisuris rugosa (Nuttall) Kuntze – RAB, F, G, GW, HC, S; = Mnesithea rugosa (Nuttall) Koning & Sosef – Z]
Coelorachis tesselata (Steudel) Nash, Pitted Jointgrass. Cp (GA): wet savannas and bogs; rare. Southeasatern Coastal
Plain endemic: sw. GA and FL west to e. LA. [= FNA, K; = Manisuris tesselata (Steudel) Scribner – GW, HC, S; = Mnesithea
tesselata (Steudel) Koning & Sosef – Z]
Coelorachis tuberculosa (Nash) Nash, Smooth Jointgrass. Cp (GA): pond margins; rare. Southeastern Coastal Plain
endemic: sw. GA (Mitchell County) (Sorrie 1998b) west to s. AL, and in the Florida peninsula. [= FNA, K; = Manisuris
tuberculosa Nash – GW, HC, S; = Mnesithea tuberculosa (Nash) Koning & Sosef – Z]
Coix Linnaeus
A genus of about 5 species, native to tropical Asia. References: Thieret in FNA (2003a).
* Coix lacryma-jobi Linnaeus, Job's-tears, reported for se. PA by Rhoads & Klein (1993), TN (Thieret in FNA 2003a), and NJ
(Kartesz 1999). [= FNA, K]
Cortaderia Stapf (Pampasgrass)
A genus of ca. 20 species, native to South America. References: Allred in FNA (2003a).
* Cortaderia selloana (J.A. & J.H. Schultes) Ascherson & Graebner, Pampasgrass. Cp (GA, SC), Pd (GA): disturbed areas;
rare, introduced from South America. This grass is a popular ornamental, rarely escaping. [= RAB, FNA, HC, K]
Ctenium Panzer (Toothache Grass)
A genus of about 20-22 species, of tropical and subtropical Africa and the Americas. References: Barkworth in FNA (2003a);
Longhi-Wagner & Renvoize (2004).