NOTES ON THE IDENTIFICATION AND DISTRIBUTION OF THE SPECIES OF THE GENUS GALIUM (RUBIACEAE) IN LOUISIANA

2013·2.4 MB·English

by  Charles M Allen

AND
NOTES ON THE IDENTIFICATION DISTRIBUTION
OF THE OF THE GENUS GALIUM (RUBIACEAE) IN LOUISIANA
SPECIES
M.
Charles Allen
1697 23rd
Colorado State University, Fort Polk Station Sr.
USA
Louisiana 71459,
Fort Polk,
CharlesMAIIen [email protected]
RESUMEN
genero Galiur
lave de las especies del
NRCS
(USDA,
Database
Louisiana in the Plants
genus Galium (Rubiaceae) are listed for
Twelve species of the
Specimens Galium
by Thomas and Allen (1998). of
and by MacRoberts while 11 species are listed
2012) (1984)
Louisiana State University,
from following herbaria;
examined and annotated the
were
collected in Louisiana
Ruston
Tech
Louisiana University,
Shreveport (LSUS);
University in
Baton Rouge (LSU); Louisiana State
Monroe (NLU). The in-state
and University of Louisiana at
(LAP);
(LTU); University of Louisiana at Lafayette
descrip-
wellastheworkofThomasandAllen(1998).Thekeys to species,
distributionisbasedon these data as
works
and published
herbarium specimens,
on observations,
based
and information are field
tions, habitat
Lipscomb and Nesom (2007), Radford et al (1968),
Diggs (1999)
and Johnston et al
including Correll (1970),
numbers 12 and includes three intro-
Louisiana
Galium species in
and Wunderlin The current of
list
(1998).
^o
ducedannuaK
nativ^^^^^
Michx.,
asprellum
Galium anglicum Huds., G.
Louisiana
flora:
excluded from the Louisiana Flora; G. obtu-
Galium taxa are
G Lam. The following
and ex
divaricatum Pourr.
number
was reported from a of
obtusum Bigelow
Galium
Hemsl.
sum and orizabense
G.
Bigelow, G. trifidum L.,
tmctor^^^
three
examined were
specimens G.
herbarium
but
by Thomas and Allen (1998) all
parishes
Thomas^^^^
forG.obtusum by Puff (1977).
were seen as reported
only.Nospecimens with four petals
petals
West
and Feliciana
from Orleans
Galium L.
Allen reported trifidum
(1998)
USDA NRCS °
by
Louisiana
Hemsl. reported for
Michx. Galium orizabense is "
tified G. trifiorum
' ' No herbarium specim
genus Galium.
n does not include the
pubhcatio
Thomas and but this
Allen (1984),
were found.
G. orizabense from Louisiana
LOUISIANA
GALIUM
IN
=
-5
•Bot. 509
Res. Texas
Inst. 7(1):
510
known
Galium anglicum Huds. (G. parisiense L. var. trichocarpum Tausch) is an introduced annual. It is
1.
W
from only one location in Louisiana. Bossier Parish: Median and roadbank of 1-20 at U.80 over-pass just of
May
E Filmore-HaughtonExitSec. T18N RllW, Thomas 156334, 11 1998 (NLU). This collec-
Rest Area, of
10,
Lipscomb and Nesom from AL, AR, GA, MO, NC, OK,
tion is the first for Louisiana. (2007) report this species
andWV.
SC,TN,TX,VA,
common
2. Galium aparine L. is a native annual that is and widespread in the state in roadside ditches, lawns,
from 48
vacant lots and other disturbed areas and is reported from all 64 parishes (Fig. 1). It is reported all
AK
and US and most Canada (USDA NRCS
conterminous in the of 2012).
states
The data
Galium asprellum Michx. a native (but perhaps introduced in Louisiana) perennial. collection
3. is
Caddo Kansas Southern Rail-
for this species in Louisiana are; Parish: along railroad tracks near center of City
W
road Yard of La 173, E of Blanchard, sec 19 T18N R14W, Thomas 65094, 29 May 1979 (NLU). This is the 6rst
Louisiana and possibly represents a one-time introduction that did not persist. This species is a
collection for
KY
MO, (USDA,
northern species and is reported from TN, NC, and all states to the north of these except for
New
NRCS reported from Brunswick, Newfoundland, Ontario, and Quebec in Canada.
2012). is also
It
pine
Galium circaezens Michx. a native perennial of well-drained forests mostly along streams in the
is
4.
NE
US OK, and (ab-
regions of the state (Fig. 2). It is reported from all the eastern states in the west to TX, KS,
ND NRCS
sent from and SD). It is also reported from Ontario and Quebec in Canada (USDA, 2012)
along
GaUum Caddo
divaricatum Pourr. ex Lam. is an introduced annual. The collection data are Parish:
5.
Thomas
SWEof T18N R14W,
near North Lakeshore Drive west of La 173 Blanchard
railroad tracks Sec. 19,
28
Thomas 88323,
83085, 17 Apr 1983 (NLU); and at the same location; Thomas 99537, 26 Apr 1987 (NLU) and
Blanchard at
Apr 1984 (NLU). Along railroad tracks in Kansas City Southern Yard west of La 169, south of
brsl
North Lakeshore Drive Sec. T19N R14W, Thomas 76697, 21 May 1981 (NLU). These collections are the
19,
from AT,
Louisiana. Lipscomb and Nesom (2007) report this species from AL, IN, KY, and TX. It is reported
for
WV
AR, CA, GA, IN, KY, LA, MO, MS, NC, OR, TN, VA, VT, and by USDA NRCS (2012).
par-
GaUum from three
hispidulum Michx. a native perennial of sandy, well-drained reported
is soils. It is
6.
NW
AL,
from
ishes in SE and Louisiana (Fig. 3). It is an Atlantic and Gulf coastal plain species with reports also
areas
disturbed
Galium parisiense an introduced annual. recorded from roadsides and other
L. is It is
7.
M
KY,
mostly in western Louisiana (Fig. 4). Lipscomb and Nesom (2007) report this species from AL, IN, .
WA
USDA NRCS from CA, OR, and US and BC Canada.
and TN. (2012) reports in the in
it
for^'
pine
Galium pilosum Ait. is a native perennial that is widespread in Louisiana. Its habitats include
8.
hardwood forests, prairies, and the northern portion of the coastal marsh but is absent from the large fl
from
reported
plain areas along the southern Mississippi River and lower coastal marsh (Fig. 3). It is also
Galium Louisiana
in
Allen,
512
Galium
uniflorum
11. Michx. is a native perennial. a plant of hardwood along streams in fahty
It is forests
well drained areas within the pine plain area
regions of the state (Fig. 8). In the US, is restricted to the coastal
it
with reports from AL, AR, FL, GA, LA, MS, NC, SC, TX, and VA (USDA NRCS
2012)
Galium
virgatum Louisiana
12. Nutt, is a native annual. reported mostly from west central
It is prairie areas in
In
(Fig. This species considered be Program 2012).
9). is to rare in Louisiana
(Louisiana Natural Heritage
(S2)
the United States, also reported from AL, AR, MO, TX (USDA NRCS 2012).
it is IL, KS, MS, OK, SC, TN, and
ACKNOWLEDGMENTS
greatly appreciate the detailed reviews by Michael MacRoberts and anonymous
an
I reviewer.
REFERENCES
CORRELL, D. S. AND M. C. JoHNSTON. 1 970. Manual of the vascular plants of Texas. Texas Res. Found., Renner.
513
Galium
Louisiana
Allen, in
Diggs, G.M., Jr., B.L. Lipscomb, and RJ. O'Kennon. 1999. Shinners & Mahler's illustrated flora of north central Texas. Sida, Bot.
Misc. 16. Botanical Research Institute of Texas, Fort Worth.
and Nesom. 2007. Galium anglicum (Rubiaceae) new for Texas and notes on the taxonomy of the G.
Lipscomb, B.L. G.L.
269-1
parisiense/divaricatum complex. J. Bot. Res. Inst. Texas 1 1 276.
:
Louisiana Natural Heritage Program. 2011. Louisiana Dept. Wildlife & Fisheries, Natural Heritage Program, Baton Rouge.
(Accessed June 201
http://www.wlf.louisiana.gov/wildlife/rare-plant-species.
Available 8, 2).
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D.T.
1
Num-
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1977. sect.
PuFF, C.
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Radford, A.E., H.E. Ahles, C.R. Bell.
Chapel
Hill.
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No.
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