ADDITIONS AND EMENDATIONS TO THE VASCULAR FLORA OF CADDO PARISH, LOUISIANA

2009·2.8 MB·English

by  Barbara R Macroberts

AND
EMENDATIONS TO THE VASCULAR FLORA
ADDITIONS
CADDO
OF LOUISIANA
PARISH,
MacRoberts and MacRoberts
Barbara Michael
H.
R.
L
and
Christopher Reid Faulkner
Patricia
S.
INTRODUCTION
Since the publication of "An updated, annotated vascular flora of Caddo Parish, Louisiana, with notes on
&
regional phytogeography and ecology" (MacRoberts MacRoberts 2006), plant collecting in Caddo Parish
new
has continued and species to the parish have been found. Consultation of recent literature has resulted
in the addition of one species. Examination of herbarium collections of species reported for the parish has
also continued, resulting in a reevaluation of some taxa. These additions and emendations are given below.
We
do not address nomenclatural changes.
CADDO
ADDITIONS TO THE PARISH FLORA
ALISMATACEAE
homa
(Holmes et 2006, Singhurst and Holmes 998),
al.
1
Raymond
Sagittaria subulata (L) Buchenau, 2167 LSUS, Reid Senecio ampullaceus has recently been collected from
new
5809 FSU, LSU. Recently reported as to Louisiana, sandylands northern Caddo
xeric Parish (Reid et
in al.
Sagittaria subulata was found on the shoreline of Caddo
2008).
where was abundant
Lake
at Oil City locally (Reid e
it
&
adunculosa Nutt, MacRoberts MacRoberts 7306
LSU, LSUS.This species was collected from a saline prairie
Caddo
southern
in Parish.
CISTACEAE
found on th e banks of Cross Lake near Shreveport.
Hodgdon, MacRoberts & Mac-
(Buckley)
3
ARACEAE
7834 LSUS. Previously considered a Texas
J,
Raymond
21 81 LSUS, Reid 5976 LSU, Kalir endemic (Carr 2002; Diggs et 2006), Lechea san-sabeana
al.
.,
i£
ater lettuce is spreading in the state and has recently been found on pimple mounds in saline prai-
en found in Cross Lake and other site Caddo and De Soto parishes (Reid et 2008).
ries in al.
Caddo
Parish.
CYPERACEAE
ASTERACEAE
Bolboschoenus robustus (Pursh) Sojak, Reid 6210 with Sibley LSU,
aceus Hook., Reid 6020 with Faulkner LSU. LSUS.This species was found marshy open ground
in in
Thought endemic
to be a Texas (Carr 2002) but receiitly an inlet of Caddo Lake. In Louisiana and Texas, mainly
it is
found
in sol a coastal species of salt marshes and saline areas. There
is
Journal of the Botanical Research Institute of Texas 3(1)
anothe collection from northern Louisiana Claiborne
(Thomas &
Parish Allen 1993).
and SWSL.
Carex alataTorr., Reid6492 with Faulkner Brimer LSU,
was 2008 from shrubby
This species collected in April a
LENTIBULARIACEAE
Caddo
marsh, perhaps influenced by beaver, in northern
purpurea\Na\t, Raymond 2165 LSUS, Reid 5800 LSU.
Utricularia
Osmunda
where was growing with abundant
Parish,
it Purple bladderwort was found recently to be abundant in
and
Morella
regalis cerifera.
Black Bayou Lake at Noah Tyson Park in northern Caddo
Carex aureolensis Steud., MacRoberts 1243 and 1281 LSUS,
Parish. This species occurs in coastal areas of Louisiana
C
LSU and LSUS
Haynes5322 LSU. Collections of frankii at
&
Reznicek
key to this recently described entity (Ford
since Noah Tyson Park a frequent stop for botanists
is
2002).
&
Carex bushii Mack., MacRoberts MacRoberts 7389 LSU. This
was from southern
species collected a saline prairie in
and
adiata Small, Reid 6488 with Faulkner Brimer
Caddo Parish and was initially identified as Carex caro-
and was found
LSU. This bladderwort an aquatic in a
is
beaver-influenced slough dominated by Nyssa aquatica
&
MacRoberts MacRoberts 7338
Eleocharistenuis (Willd.) Schult,
Caddo
northern
Parish.
in
was found
LSU, LSUS. Eleocharis tenuis in a saline prairie
subulata Reid 6486 with Faulkner LSU.This species
Utricularia L,
Caddo
southern
in Parish.
was discovered an open, sandy seep along
recently in a
Eleocharis wolfii A. Gray, Reid 6083
L stream bisecting a power line right-of-way near Mira in
Caddo
northern
Parish.
tage Program 2009) and Texas of species-of-concern
list
LYCOPODIACEAE
was from wet
(Diggs et 2006). Eleocharis wo//?/ collected
al.
Lycopodiella appressa (Chapm.) Cranfill, MacRoberts & Mac-
Caddo
depressions in a saline prairie in southern Parish.
Roberts 8334 LSUS. Southern clubmoss was found to be
Lipocarpha drummondii (Nees) G.C. Tucker, Thieret32 137 NCU.
common power
locally in a small seepage area within a
Caddo
right-of-way near Mira northern Parish.
LeBlond (2008) based on a Caddo Parish specimen. line in
Rhynchospora globularis (Chapm.) Small, MacRoberts & NAJADACEAE
was
MacRoberts 7428 LSU, LSUS. Rhynchospora globularis Najas minor Kolinsky LSUS. This species was recently
AIL, s.n.
Caddo
found in a saline prairie in southern Parish. eofCrc an Old World
ke.
It is
Steud, Reid 6741 LSU, LSUS. This species
ilenbergii
was collected from an open seepage area within a power yet known for East
t
Caddo
line right-of-way near Mira in northern Parish. Texas but expected (Diggs et 2006).
al.
is
GENTIANACEAE
SALVINACEAE
Bartonia paniculate (Michx.) Muhl., Reid 4638 LSU, TEX-LL, Salvinia molesta D.S. Mitch., Reid 5798 with Jones LSU, LSUS,
Reid 6405 with Witsell LSUS. Specimens cited here were
collected from the same locality, a forested seep in north- apparently reached Caddo Parish very recently,
that
Caddo August 4638
ern Parish. Collected in 2003, Reid is where was found growing abundantly in Caddo Lake.
it
referable to Bartonia paniculata subsp. texana (Correll) K. Since discovery in the parish in May 2006, has spread
its it
& (Mathews
Mathews, Dunne, E. York, Struwe, stat. nov. et within Caddo Lake and has appeared in Cross Lake (C.
(then recognized as a distinct species) by the collector,
rell
XYRIDACEAE
and a duplicate sent to TEX-LL was annotated by Jason
6746
(Chapm.) Reid 6745, LSU; 6747,
var. difformis,
is
Singhurst as texana. Bartonia paniculata subsp. texana
B.
6749 LSUS. This species occurs an open seepage area
in
Caddo by Mathews on
included Parish et (2009)
in al.
is
within a power line right-of-way near Mira in northern
the basis of the Reid 4638 specimen at TEX-LL Collected
Caddo
Parish.
between
October 2007, Reid 6405 intermediate
in is
(Chapm.) Barbour 1099
iifolia Krai,
&
the descriptions of texana and paniculata (Correll
B. B.
We
LSUS. had previously identified this as X. caroliniana
Johnston 970). Bartonia paniculata subsp. paniculata
is
1
Caddo
expected
in Parish.
HYDROCHARITACEAE
MacRoberts
Royle,
ticillata
(L.f.)
<!
EXCLUDED FROM THE CADDO PARISH FLORA
CYPERACEAE
ASTERACEAE
Solidago ulmi Muhl. rugosa Carex frankii Kunth. See Carex aureolensis in Additio
folia e: is 5. P. Mill,
I.
Carex See Carex bushii Additions
caroliniana. in
list.
BRASSICACEAE
Hooper. Like others b
(Poir.)
Cardamine pensylvanica x Cparvifloral.
Willd.
IV is
MacRoberts etal., Flora of Caddo Parish, Louisiana 381
we XYRIDACEAE
misidentified a sterile aquatic species of Eleochahs
as Websteria. Although widely reported from Louisiana Xyn See
(Thomas & Allen 1993), this species probably does not (Chapm.) Krai under Additions,
occur the state (Bruhl 2002).
in
NOMENCLATURAL ERROR
CHENOPODIACEAE
Bassia scoparia should be Kochia scoparia (L) Schroder.
DISCUSSION
now
The Caddo Parish vascular plant count stands at 1424, of which 1183 are native and 241 are exotic.
&
By Florida standards, Caddo Parish well collected and exceeds predicted species richness (Williams
is
ACKNOWLEDGMENTS
We
thank George Dickson and Ralph and Becky Dalton allowing our surveys on Dickson and Dalton
for
Road
saline prairies, respectively. Sidney Evans and James Taylor allowed us to survey Barron Prairie in
We
Caddo Parish. thank D.W. and Patricia Little for allowing access to their property to collect Senecio am-
pullaceus. Ryan Hook allowed access to the Senecio ampullaceus location through his family's property and
we appreciate his kindness and interest. Jason Singhurst verified our first collection of Lechea san-sabeana.
We
thank Robert Haynes for verifying a duplicate of Sagittaria subulata. Charles Bryson (SWSL) vetted a
We Windham
number of Carex. thank Craig of Caddo Levee District for allowing access to Levee District
We
lands. are indebted to Sam Brimer, Forester with Caddo Levee District, for taking us to Levee District
We
lands in north Caddo Parish. thank Alan Boyd, Weyerhaeuser Company, for allowing access to the
Company
seep with Lycopodiella appressa, Utricularia subulata, and others. Deltic Timber allowed access to
some of their lands in north Caddo. Larry Raymond facilitated access to Caddo Parish parks. The Nature
Conservancy allowed access Caddo Black Bayou Preserve near Rodessa. Royal Tyler kindly hosted us on
to
his property near Rodessa. Charles Allen reviewed the paper.
REFERENCES
Bruhl, JJ. 2002. Websteria. Flora of North America Committee, eds. Flora of North America north of Mexico.
In:
New
Oxford 120-121.
Vol. 23. Univeristy Press, York. Pp.
Carr, W. 2002. No place but Texas: an annotated of plant taxa endemic to the lone star state. Unpublished
list
The Conservancy
manuscript. Nature of Texas, Austin.
Correll, D.S. and M.C. Johnston. 970. Manual of the vascular plants of Texas. Texas Research Foundation, Renner,
1
Diggs, G.M., B.L. Lipscomb, M.D. Reed, and RJ. O'Kennon. 2006. Illustrated flora of East Texas. Sida, Bot. Misc. 26:1 -1 594.
Ford, B.A. and A.A. Reznicek. 2002. Carex Linnaeus sect. Squarrosae. In: Flora of North America Committee, eds.
New
518-519.
Flora of North America north of Mexico. Vol. 23. Oxford Univeristy Press, York. Pp.
West endemic
Holmes, W.C, Singhurst, and S.G. Powers. 2006. Senecio ampullaceus (Asteraceae): a Gulf Coastal Plain
J.
new
Oklahoma. 93-1
to Phytologia 88:1 96.
Louisiana Natural Heritage Program. 2009. Rare plant Department of Wildlife and Fisheries, Baton Rouge. Avail-
list.
able http://www.wlf.louisiana.gov/pdfs/experience/naturalheritage/
at:
An Caddo
MacRoberts, and M.H. MacRoberts. 2006. updated, annotated vascular flora of Parish, Louisiana,
B.R.,
on phytogeography and 191-1219.
with notes regional ecology. Sida 22:1
L A and taxonomic
Mathews, K.G., N. Dunne, E. York, and Struwe. 2009. phylogenetic analysis revision of Bartonia
(Gentianaceae: Gentianeae), based on molecular and morphological evidence. Syst. Bot. 34:1 62-1 72.
PL Noteworthy from
MacRoberts, and M.H. MacRoberts. 2008. vascular plant collections
Reid, C.S., Faulkner, B.R.
northwest Louisiana. Bot. Res. Inst. Texas 2:643-647.
J.
ch Institute of Texas 3(1)
and W.C Holmes. 998. Four new additions to the Flora of Arkansas. Castanea 64:276-277.
Singhurst,
j.R.
1
Sorrie, B.A. and RJ. LeBlond. 2008. Noteworthy collections from the southeastern United States. J. Bot. Res. Inst.
Texas 2:1353-1361.
CM. Department of and
Thomas, and Allen. 993. Atlas of the vascular flora of Louisiana. Louisiana Wildlife
R.D.
1
Baton Rouge.
Fisheries,
Williams, and A. Debeuca. 2008. Analysis of the completeness of vascular plant records in Florida. J. Bot. Res.
J.K.
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