1 noo11wnlltsndtad 5 puu tsrnbl.ru34r .tttj'o'l tunJu)ru1ruS lslnblltJ tr) '.sortDl "rJ$o-lwntDtuapaS HSTllcxpC D d(i^rllrl\ HITuos)rrj'J HJxe llanli\lC),t/ora S ' '(scrccds Jg d wnptDJlD) S t au u) Luntota)Dnir4r4,f;g rrllr.r1"^nyujclsalN lo tsc,t-qlnos € uotFl.tstt;t Lu,uJ P,'\'u l\. l Jrlrsr tllo'111.t,^ttutltptl.(ls serceds,\\eu oqJ erleJlsnvujelse^d lo acur^.ordlDcruElo{ uceurcrg aqt Jo t.utsr(I uounqqsv Z -^:llrcqull]{ cqt ol pelclJlsersI wnvtactp g sctcads,4ou eql eJrq,rsuorfereseql qloq ur rnccolsrnb1.rr:3 ttu.rottEuo1 S puc zrt,^\qcs O wntoqdoloLac wntyl{15 ltoluelurequoN }or{lrouJrl pur rrll-llsnv ujalse/i\ -iouor8cr trci:cqul; 1 :s^\olloJsu \rrlurlsnV urolsa/!\ puE urequou ur wntplJfla) snue8qnsr./r?p4{ls ur pezruSooor,rou eru sercedsue; '( ruuoJ sJedseuml H S :6t61 scurrfT lleilrC) snue8qns srql ur papJoJeJueeq e^uq fl pue I l Jo sjeqtUnueuosororq3 protduH rru8qse{rl-qsnrq atulrdrls 'uoDlsod e pu€ pero88ulelecuoc eql ol uonrsodles xaluoc eql uro{ unlnqrunJ e Jo luaue^crru 'urnrqturd,(r1 a,rrlrsucsaq1 ,{q lnq snsorolpe8urq a,rqrsues e fq tou paonpo.rd,{1rlrqotu urnruretsou,{3 esoqolS€ e^uq( I t :8061FErqplry{) snue8qnssrql Jo sraqrueruIIV €roqpaqucsaperr (eDocrrprt{tS) 'rqpllhl ( lFul'l) wntpuual Sqns ampu{lg ur 8ur3uo1cqlur1drc3fr.4.lo sorrads .,(?u ecrqJ uoJlJnpoJluI 'uxal JoJpepr^oJd sr ,{eI V uel ot snue?qnssrql ur u,{\oul serJedsJo J3qurnuplol oql Sur8uuq'rqplrt{ ( lpur1) wnlpuga) snueSqnsairrprl&g or 3uolcqXaql pelurlsnllrpuc peqrrrsap 'anNJaJn 'serceds er€ ,{llueuua) T ou,ro-1 lllotwUaa$ S pue wnlDJnlp S ullp4(lg uullvrlsnv uratsad\.reuearrf,L (8661)902- L6I:(Z)Zl D^rJKnNErlE\ sny ure1se16ruo.r1 ("vaartptltts) Lunlpl!ruaJ snua8qns arrrprJ&5 ur serceds1ue1d:e?3u1 ,reu eerqJ j ur^e>I 'xlll?euua) pu€ uellv'cu,{\o-I lJ€Jlsqv g869 lrrterlsnvluotserlA'erlue) fuo^rt.C trelluafi '62 ?Dg pel.o-l lui(rcffeuut\l purl 'uorsr^rC pu? uole^resuo) Jo luanr]lndac suortrlouctprodroJ !run suortmrlqndoruarrsi 'Sryrrun( 'a.ut.t €209 err€llsnv uralsa/ uu.lC 9 z,{llueuue) C ur^e) put reu,^\o-I uallv sllBrlsnv urolsaa\ruo{ (auaJElpll,{ls) Mn!p!4ua3 sltruoBqnsMft!rutts u! salredstuBldra88lrl a{au aaJqf (8661)902/61:(z)z I ,7]l,,(']N N,r)hid Vol. 12, No. 2 (1998) Taxonomy Key to the speciesof Stylidium subgents Centridium I: Appendage(s)present on gynostcmium......... ..............2 1 Appendage(s)absent on 9ynostemium........................ ................................6 2: Gynostemiumwith 2 appendages;corolla prcdominately orangc on adaxialsurface .................. S.diceratum 2 Gynostcmiumwith l appcndage;corolla white or pink on adaxialsurfacc...............................3 3: Gynostemiumbearing a recurvedhorn shaped appcndage on thebend....................................4 3 Gynostemiumappcndage not horn-shaped .. 5 4: Throat appendages2; labellumclliptic, apexnot emarginatc, irregularlyserrate .....S. calcaratum 4 Throatappendages 4; labellumlagcniforrn, apex emarginatc, not serrate.............. S. weeliwolli 5: Gynostemiumappendlge reniform, recurved from thebend; nectaryspur prominent, cradled by the horizontalposterior sepal........................ S.mimeticum 5 Gynostcmium appcndagcsquare, recurved from the bend, apex irregularly scrrate;ncctary spur absentor very poorly developed and hiddenbehind the alwaysvertical posterior sepal....... ...........S. ecorne 6: Corolla orangc; posterior corolla lobes each deeply dividcd into 2 (soas to appearas 4 individuallobes).................... ...........S.ceratophorum 6 Corolla white to pink; postcriorcorolla lobes undivided ...........................7 7: Plantsmostly 1.5-2.5crn high; nectaryspur abscnt............ S.perpusillum 7 Plantsmostly 4.5 25 cm high; ncctaryspur present .. 8 8: Posteriorcorolla lobcs cuncale, the apexobtuse and unlobcd,with a distinctiveblunt lateraltooth at the basc....................... .........S. edenlatum 8 Posterior corolla lobes either cuneatewith a tridentateapex or obovate with a crenateapex, lacking basal tooth............. .........................................9 9: Plantsmostly 5 9 cm talli postcriorcorolla lobes cuneatc, apex tridentate; nectaryspur shortcr than the posteriorsepal ....................... .......S. aceratum 9 Plantsmostly l0-25 cm tall; postedorcorolla lobes obovate, apex crenate; nectaryspur longcr than thc posteliorsepal ....................... ....S.longicornu Stylidium aceratum Lowrie & Kenneally,qr. /lor. Stylidio calcqrqto R. Br. affinis sed cornu appendicise flexo gynostemii absenti. ?ypus. Great Northem Highway, north of Bullsbrook fpreciselocality withheld], Wcstern Australia, 9 Novcmber 1991,A. Lowrie 496 (.holo: PERTH 04980336;lso: MEL). A fibrous-rooted annual herb 5 9 cm high (including infloresccnce);stem translucent white, 2.54 mm long, 0.8 I mm diam.; basal rosetteof leavesflat, 5-12 mm diam. Leayes spathulate, 3 6 mm long, 0.7 1.5 mm widc nearapex, 0.3-0.6 mm wide at the base,flat in section,glabrous. Inflorescenceusually a simpledichasium but alsothc beginningsof a compounddichasium in older plants,5-9cm long(including peduncle), glandular. 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VA\ tuo{ r/rrrpr rS ^{.u :r:rllJ C ) 2p .oao-t V N/./)hizr Vol. 12, No. 2 (1998) *v I B A. Lowrie 1998 Figurc 1. .5/llidrr?rar.r'drrrr. A hrbit ol llolvcriDgplant; B - leaf, eDlafgedsecli{tr lelt; C hypanthium and sepals; D laleralview ol-corullir,gynoslcrrinrn and hypanlhium;E corollar F throat appcndagcs; G - tabellurniH - laloralviclv of gyrostemium,anthcrs and slipilalcst;gma in lhe set non triggefedposition Scaie bar for all = | nnn. DrarvD lrc.|' A. 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