TWO WEEDY SPECIES, AMMOSELINUM BUTLERI (UMBELLIFERAE) AND LEPIDIUM AUSTRINUM (CRUCIFERAE), NEW TO MISSISSIPPI

3 Pages·1991·1.1 MB·English

by  Charles T Bryson

506
1989A).IhavenotseenFonellas.n.,butitislikelytobeA.aromaticasensu
Bayer, 19H9B)asitisfromthepeakadjacenttoMt. Sacajawea,whereA.
aromatica is abundant. One specimen, Suksdorf 1063 is clearly non-
glanckilarwith light brown phyllariesand upsurgent stolons and in my
opiniontypicalA. /nuhrinellaRydberg(sensuBayer 1988). Thespecimen
fromsouthernAlbertacouldpassforA.aromatica(Stebbins,pers.comm.)
and iswithintheextendedrangeofthespeciesrecentlypresented byme
(Bayer 1989B). I was unable to obtain the British Columbiacollection
{Selhy289)forverification.
The most significant and controversial range extension they
Chmielewski&Chinnappa 1988)reportisBeli&Johnson766fromMono
Co.,California. Afterexaminationofthisnon-glandular, black-phyllaried
specimen, IconcludeitisalpineA. mediaE. Greene(sensuBayer 1988).
StebbinsandEvert,afterexaminingthisspecimen,concurthatitisclearly
A. media(Stebbins, pers. comm.).
In my opinion, two oi the eight specimens that Chmielewski &
Chinnappa(1988)havesitedasA. aromatica, including themajorrange
extension toCalifornia, aremisidentified. Consequently, I stillmaintain
thatA. aromaticaisanarrowlyrestrictedendemic, basedonthesizeofits
rangeandtheratheruniquehabitatrequirem—entswhencomparedtoother
sexually reproducingspeciesoiAntennaria. ^^-j Bayer, Departmentof
Botany, UniversityofAlberta, Edmonton, AlbertaT6G2E9, CANADA.
refhrhnc;f.s
BAYER, R. j. 1988. Typification ofwestern North Amenciin Antennaria Gaertncr
(Asreraceae: Inuleae). I. Sexual species of sections Aipinae, Dioicae, and Plan-
taginitoliae.Taxon37:292-298.
1989A.PatternsofisozymevariationinwesternNorthAmericanAntennaria
(Asteraceae:Inuleae).I.DiploidandpolyploidspeciesofsectionAlpmae.Amer.J.Bot.
76:679-691.
1989B.Asystematicandphytogeographicstudyq{Antennariaaromaticaand
A.demifdlia(Asteraceae:Inuleae)inthewesternNorthAmeticanCordillera.Madrono
36:248-259.
CHMliIcaELEvEeWrtSK(AIs,teJr.acGe.ae:C.ICnu.leCaHe)I.NSNiAdaPP1A3:.25169~88.258R.angeextensionofAK/OTW^n^r/raw^-
EVERT,E. 1984.AnewspeciesoiAntennaria(Asteraceae)fromMontanaandWyoming.
Madrono31:109-112.
TWO WEEDY SPECIES, AMMOSELINVM BUTLERI (UM-
BELLIFERAE)AND—LEPIDIUMAUSTRINUM(CRUCIFERAE),NEW
TO MISSISSIPPI. The following notes on two species, Ammoselinum
butleri (S. Wats.) Coult. & Rose and Lepidium anstrmnm Small, are
SiHA 14(3):5()6. 1991.
507
additionstothefloraofMississippi.Bothoccurasweedsinopenorpartial-
lyshadedareasonsandy,sandyloam,orsiltyloamsoilsandinassociation
withSiierochloadura(L.)Beauv. recentlyreportednewtoMississippi(Car-
ter, Morris, and Bryson 1990).
Animoselinumbntkr'iisasmallsandparsleythatoccursfrom Kansas, E
OklahomaandArkansassouthwardintoTexas(CorrellandJohnston 1970,
McGregoretal. 1986,Smith 1978). InKansasthisspeciesisknownfrom
twocountieswhere it isaweed inalawnand acitypark. In Texas it is
reportedprincipallyfrombottomlandsandmoistwoodlandsintheTimber
Belt, and Blacklandand Coastalprairies.
SReucl.eSvp5ie,lclTei,2me2SnNos,fcHRowl3lyWec,tMeSd1:18M,AIpSSerScI.1S92S9,I0PT,P2IB.IrNy,SmunRn48f7Wl9o,9weI&r1NACnpor.rl:o1nS99(o0If,BDEB,rreyNws,LonUW8,8S1oW2fS&HLw)N;yetr1UtmoSni4(WI9BWEo,,f
MO,SWSL,VDB).WashingtonCo.:2.2miNEofStoneville,Sec.36,T19N,R2W,20
Apr1987Bryson.53.54(IBE,NLU,SMU,SWSL,TAES,VDB,VSC);3miSofLehinci,Eof
oldHwyUS61,pecanorchard,21Apr1987,Btjson5368(SWSL);SofGreenvilleandN
ofHwyUS82,BASFResearchFarm,21Apr 1988,s.coll.s.n.(SWSL);Stoneville,Mis-
sissippiAgricultural&I'orestryExperimentStation, DeltaBranch, lawnweed, 12Apr
1990,Bryson8821(SWSL).
Thisspeciesisacommonweedoflawnsordisturbedareas,butitisalso
abundant inno-tillat;eexperimentalcottonandsoybean-crop-production
systemsplotsintheStonevillearea. Withincreaseduseofreducedtillage
agriculture,A.hNtlcrimaybecomemorewidespread.However,itisspecu-
lated to have little economic effect on summer row-crop production
becauseitisanearlyspringannual.Itmayhavebeenoverlookedinthepast
because its habitand habitataresimilartoCoronopusdidymus(L.)Small.
hepidiumaustrniuniisahispidpeppergrassofsandyorsandyloamsoils.It
rangesfromsoutheastern KansasandOklahomasouthwardintosouthern
Texas;italsooccursintheTrans-PecosofTexasandinMexico(Correlland
Johnston 1970, McGregor et al. 1986). It also occurs in Arkansas and
LouisianabutL.aiislnnuniisrareintheeasternlimitsofitsnaturalrange
andisundoubtedlyintroducedintoSouthCarolinaonimportedwool(Al-
Shehbaz 1986).
Siucimcnscollected:MISSISSIPPI. WashingtonCo.:Leland,jet.oldHwyUS6i&
HwyUS82,May 1983,Sdiamril(SWSL);NEofStoneville,DeltaExperimentalForest,
Sec27,TI9N,R7W, 15Apr 1990,Bryson8848&Newton(IBE,MICH,NLU,SWSL);
Lelaiul,alongDeerC^reekDrive,.^0Apr1990,Elmores.n.(SWSL);Stoneville,Mississippi
Agricultural&ForestryExpetimentStation,DeltaBranch,Sec. 11,T18N,R7W,7May
1990,Bryson8968(DSC,DUR,FLAS,FSU,GA,GH,IBE,LSU,MICH,MISS,MISSA,
MMNS,MO, NLU,NY,SMU,SWSL,TAES,TENN, UARK,US,VDB, VSC).
SioA 14(3);507. 1991.
508
Thisspecies isanabundantweedinWashingtonCountyalongroad-
sides,inno-tillfields,andinwheatfields.Incompetitionwithwheat,itis
notuncommontofindL.austrinumplants 1to 1.2mtall.Withoutcrop
competitionplantsaregenerallylessthan0.5 mtall.
WethankRichardCarter(VSC)iotreviewofthemanuscriptandidenti-
fication of A. butleri, Sidney McDaniel (IBE) for verification of L.
austrinum, andR. K. Rabeler(MICH)forthereviewofthemanuscript
andloanofspecimensrepresentiveofseveral—Lepidiumspecies,whichwere
comparedwithourMississippicollections. CharlesT. Bryson, USDA,
AARRSS,,SFoiuetlhderCnroWpeseMdeScchiaennciezLaatbioornatLoarboyr(atSoWrSy,L)StaonnedviCll.e,DeMnnSis5E8l7m7or6e,,UU.SSD.AA.,
REFERENCES
ACLA-RSSTouHEtERhHe,aBsARt.eZ,r,nMUI..niWAt..edM1S9Ot8aR6tR.esI.TShJ,.eAAgreNnnoDelradC.oArfTbLoerB.piRd6Yi7eS:a2Oe6N5(.C—ru1c39i1f91e0.r.aeSo;mBerarsasriecaocreaoet)heirnwitshee
interestingvascularplantsfromthedeltaregionofMississippi.Castanea55:40—55.
CORRELL,D.S.ANDM.C.JOHNSTON.1970.ManualofthevascularplantsofTexas.
MCGTeRxEasGROeRse,arRc.hLF.o,uTndaMt.ioBn,ARRKeLnnEeYt,,TRe.xaEs..B1R8O8O1KpSp.,ANDE.K.SCOFIELD.1986.
Flotaofthegreatplains.UniversityPressofKansas. 1392pp.
SMITH,E.B. 1978.AnatlasandannotatedlistofvascularplantsofArkansas,Fayette-
ville,592pp.
THEIMPENDINGNATURALIZATIO—NOFPISTACIACHINENSIS
(ANACARDIACEAE)INEASTTEXAS Whydosomeexoticwoody
plantsescapefromcultivationandnaturalizequicklywhileothersrequire
decadestodoso?PistaciachinensisBungeisaChinesetreethathasbeen
slowly naturalizing in SouthCentraland EastTexas. Even though this
ornamentaltreewasintroducedtocultivationin 1897(Chittenden 1951)
andaccordingtoTexasAgriculturalExperimentStationrecordshasbeen
cultivatedinTexassince1918,thisisthefirstreportofthespeciesnatura-
lizing in North America(ShetlerandSkog 1978). Incontrast, another
well-known Chinese tree, Sapium sebiferum (L.) Roxb., introduced to
cultivationinabout 1850andtoTexasintheearly 1900's(Jamiesonand
McKinney 1938),hasquicklynaturalizedandisdisplacingnativecoastal
marshspecies.
Barkley(1943)listedseveralexoticmembersoftheAnacardiaceaebut
heandlaterbotanistsdidnotconsiderP.chinensistobenaturalizedinTexas
(Johnston 1988)oreveninNorthAmerica(ShetlerandSkog 1978).Pis-
tacia atlantica Desf. is listed as established in Washington Co. Utah
(Welsh, Atwood, Goodrich,andHiggins 1987).
SiDA14(3):508. 1991.