CYPERUS PILOSUS (CYPERACEAE) NEW TO THE FLORA OF TEXAS

2009·1.6 MB·English

by  Richard Carter

.
NEW
CYPERUS (CYPERACEAE) TO THE FLORA OF TEXAS
PILOSUS
Richard Carter Charles M. Allen
Herbarium (V5C) Colorado State University
Department ofBiology Fort Polk Station
Valdosta State University 645 23rd Street
1
USA.
Valdosta, Georgia 31698-0015, U.S.A. Fort Polk, Louisiana 71459,
[email protected]
and
David Lewis
Patricia
P.
262 CR 3062
Newton, Texas 75966-7003, USA.
ABSTRACT
Cyperus pilosus Vahl widely distributed in tropical or subtropical areas of the Old World (KUkenthal
is
&
common
1935-1936). a weed of rice in Asia (McGivney 1938; Bryson Carter 2008) and known
It is is
from Hawaii based upon a single historical collection made in 1916 (Wagner et al. 1999). Cyperus pilosus was
reported in the continental United States from Louisiana, where was apparently introduced from Asia
first
it
as a contaminant of rice seed (O'Neill 1938). Subsequently, has been reported from Florida (Burkhalter
it
&
1985), Mississippi (Bryson Carter 1992), South Carolina (Tucker 2002), and Georgia (Carter
et al. et al.
2009). Cyperus pilosus inhabits hydric soils of wet ditches, rice fields, edges of ponds, and wetlands. has
It
not previously been reported from Texas (Jones 1997; Tucker 2002; Diggs 2006), and the
et et et
al. al. al.
&
mapped
(Thomas
nearest locality is in nearby Calcasieu Parish, Louisiana Allen 1993).
The The
specific epithet pilosus is descriptive of the hispidulous rachis. species is illustrated in Figure
1. If inserted in the key to Cyperus immediately after the first lead of couplet 8 on page 1133 in Diggs et al.
(2006), the following couplet will enable the identification of C. pilosus in eastern Texas.
culm
d rhizomes; subterete to obtusely
ti
REFERENCES
Bryson, C.T. and Carter. 992. Notes on Cyperus and Kyllinga (Cyperaceae) with records of
R. six
1
new
species to the state. Sida 5:1 9-1 24.
1 1
The
Bryson, C.T. and R. Carter 2008. significance of Cyperaceae as weeds. In: R.F.C Naczi and B.A. Ford, eds. Sedges:
uses, diversity, and systematics of the Cyperaceae. Monogr. Syst. Bot. Missouri Bot. Gard. 08:1 5-1 01
1
new
and
Burkhalter, 985. Aletris farinosa, Cyperus difformis, Cyperus pilosus for Florida. Sida :247-248.
J.R.
1 1 1
Carter, R., W.W. Baker, and M.W. Morris. 2009 Contributions to the flora of Georgia, U.S.A. Vulpia. In press.
and
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R.J.
Jones, S.D., J.K. Wipff, and P.M. Montgomery. 997. Vascular plants of Texas. Univ. of Texas Press, Austin.
1
1935-1936. Cyperaceae-Scirpoideae-Cypereae. 20
Kukenthal, G. A. Engler, ed., Pflanzehreich (Heft)
IV.
101:1-671.
Journal of the Botanical Research Institute of Texas 3(1)
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.
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1
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&
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New
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J.L.
Hawan
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1
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