Table Of ContentNuytsia 13(2):303-315(2000) 303
A
review oftheEucalyptuscalycogona group (Myrtaceae) includingthe
descriptionofthreenewtaxafrom southernAustralia
Dean Nicolle
School of Biological Sciences, The Flinders University of South Australia, GPO Box 2100, Adelaide 5001
Abstract
Nicolle, D. AreviewoftheEucalyptuscalycogonagroup(Myrtaceae)includingthedescription
ofthreenewtaxafromsouthernAustralia.Nuytsia 13(2):303-315(2000).EucalyptusL’Herit.series
Heterostemones Benth. (Myrtaceae) is described and a key is provided for the seven species now
recognized. £.ca/ycogorcaTurcz.isdescribedunderareducedcircumscriptionandtwonewsubspecies
and anew species are described. E. calycogona subsp. calycogona occurs in the wheatbelt areaof
southern Western Australia and disjunctly in South Australia, mainly on Eyre Peninsula. New
subspeciesofE. calycogona describedare: subsp. spaffordiiNicolle,restrictedtoEyrePeninsulain
SouthAustralia; and subsp. trachybasisNicolle, widespreadineastern SouthAustraliaandwestern
Victoria,justextendingintoNewSouthWales.ThenewspeciesE.prolixaNicolleisendemictothe
southerngoldfieldsregionofWesternAustralia,differingfromE. calycogonainitsmallethabitand
larger,elongatefruits. Distributionmapsandrepresentativeillustrationsareprovidedforthenewly
described taxa.
Introduction
Eucalyptus calycogona was first described by Turczaninow (1852) from material collected in
WesternAustraliabyJ.Drummond,thepreciselocalityofwhichisunknown,butwhichwouldbein
thefarsouth-westernpartofthedistributionofthespeciesonaccountofthecollector’sknownfield
travels(Erickson, 1969). Boththelocalityandthemorphologyofthetypecorrespondtothesmooth-
barkedmallee form ofE. calycogona with relatively small and notstrongly-ribbed buds and fruits,
herein recognized as subsp. calycogona. Turczaninow’s protologue also firmly establishes what is
currently recognized as E. calycogona, including in the description “cupulatetragonis” referring to
thequadrangularfruitswhichdistinguishthespecieswithinEucalyptusseriesHeterostemonesBenth.
&
(equivalenttoPryor Johnson’s(1971) informalE. ser. Calycogonae).
Taxonomy
EucalyptusseriesHeterostemonesBenth.,FloraAustraliensis3: 190,209(1867). Type:Eucalyptus
gracilisF. Muell.
304 Nuytsia Vol. 13, No. 2 (2000)
AsmallseriesofsevenspeciesfromsouthernAustralia,distinguishedbyitscombinationofbisected
cotyledons; stem pith glands absent; small tree (mallet) or mallee habit; axillary, unbranched
inflorescences;inflexedstaminalfilaments,theouterfilamentstwisted,particularlymanifestinflowers
(cf. withinbuds), withoutanthers and longerthanthefertilefilaments; ovulesin fourverticalrows;
t1.heouteroperculumdehiscingduringbuddevelopment;andthesomewhatovoidseedwithanalmost
sm2.ooth to quite smooth reticulum.
3.
3.
KeytothespeciesofEucalyptusseriesHeterostemones
4.Buds andfruit squareintransversesection, atleastonlowerpartofhypanthium
4. Fruit oblong to urceolate in outline
5.
5. Mallet, fruit length:width ratio 2.5:1-4:1 E. prolixa
Mallee, fruit length:width ratio 1.5:1—2.5:1 E. calycogona
2. Fruit obconical to cupular in outline E.quadrans
1. Buds and fruitroundin transverse section
Pedicels equal to orlongerthan bud length E.yilgarnensis
Pedicels shorter than bud length
Fruiturceolate, much longerthanbroad E.celastroides
Fruitobconical to cupularto barrel-shaped
mm
6. Pedunclesto 5 long E.brevipes
mm
6. Peduncles>5 long E, gracilis
1.EucalyptuscalycogonaTurcz.,Bull. Cl.Phys.-Math. Acad. Sci. Saint-Petersburg 10: 388(1852).
Type: SwanRiverColony,WesternAustralia, 1849,J.Drummond5: 184(holo: KW;iso:BM,FI,K,
MEL,PERTH,W).
Notes. RecognizedwithinE. seriesHeterostemonesbythemalleehabit;therelativelylargebudsand
fruitsthatarelongerthanwide, squareintransversesectionandhavefourlongitudinalribsorwings
extendingfromthepedicel-hypanthiumjointothetopofthehypanthium. Staminalcolourvariesfrom
whiteto darkpink. Three subspecies areherein recognized.
Intergrades between E. calycogona and the closely related E. gracilis F. Muell. have been
postulated (Brooker&Kleinig 1996), andMaiden (1903) refersto “insensible gradations”between
E. gracilis and E. calycogona without citing localities or specimens. These reports have not been
,
substantiatedinthefieldbytheauthor. Thetwotaxaaredistinguishablebybudandfruitcharacteristics,
E. gracilishavingmuchsmallerbudsandfruitsthataretereteintransversesectionandbarrel-shaped
ratherthanurceolatefruits. E. quadransBrooker&Hopperis alsocloselyrelatedtoE. calycogona
showing some morphological approach to it in its angular hypanthium. E. quadrans differs in its
obconical,angularratherthanribbed,shorterbudsandfruits. IntermediatesbetweenE.quadransand
E. calycogona(subsp. calycogona)havebeenrecorded(M. Frenchpers. comm.).
KeytothesubspeciesofEucalyptuscalycogona
mm mm
1. Mostadultleaves 14-24 wide,firm;fruit6-9 wide,
ribs very prominent subsp.spaffordii
mm mm
1. Mostadultleaves6-15 wide;fruit3-7 wide, ribs lessprominent
D. Nicolle, A review of Eucalyptus calycogona including descriptions of three new taxa from SA 305
2. Barksmoothorrough only atverybase subsp. calycogona
2. Barkrough, tessellatedfor0.5—2.5 m subsp.trachybasis
la.EucalyptuscalycogonaTurcz. subsp. calycogona
Mallee,usuallyerect-stemmed,3-5mtall,forminglignotubers. Barksmooththroughout,greyto
lightgrey overlightgreytocream, decorticating in shortribbons. Seedling leaves opposite for5-7
pairs then alternate, shortlypetiolate, narrow-lanceolatethen narrow-elliptic, upto20mmlong and
mm
5 wide,±concoloroustoslightlydiscolorous,dull,green.Adultleavesalternate,petiolate,narrow-
lanceolatetolanceolate,55-100mmlong,7-13 mmwide,concolorous,glossy,greentodarkgreen;
reticulationsparsetomoderate,withnumerousislandoilglands, lateralveinsat30-45“frommidrib.
mm
Inflorescencesaxillary, unbranched,7-flowered;pedunclesteretetoangular,4-9 long;pedicels
2-4 mm long. Buds fusiform, 8-10 mm long, 3-5 mm diam., hypanthium with four vertical ribs;
operculumequalinwidthtohypanthium, smooth,conical, apiculate. Flowerscreamy whitetodark
pink. Stamensinflexed,outerstamenswithoutanthers;fertileanthersonshorterfilaments,versatile,
cuboidtogloboid,openingbyporesandslits. Ovulesin4verticalrows. Fruitspedicellate,urceolate,
withfourweakbutdistinctverticalribs, 8-10mmlong,4-6mmdiam.;operculumscarverynarrow,
mm
leveltoascending,to0.8 wide;discdescending,valves4,deeplyenclosedinfruit. Seeds angular-
mm
ovoid,0.8-1.8 long,somewhatglossy,tan-brown,withshallowlongitudinalgroovesandavery
finelypittedto smoothreticulum; chaffglossy, orange-brown. (Figure 1)
Selectedspecimensexamined. WESTERNAUSTRALIA(westtoeast):15kmNofLakeGrace,8Aug.
1984,M.I.H.Brooker8619(AD,CANB,PERTH);11.4kmNNWofHydentowardsNarembeen,3Oct.
1975 Brooker4993(AD,CANB,PERTH);2.9kmEofRabbitProofFenceonVarley-Southem
Figure 1. Eucalyptus calycogona subsp. calycogona habit from between Darke Peak and Mangalo, Eyre Peninsula,
South Australia.
306 Nuytsia Vol. 13, No. 2 (2000)
Crossroad,1Sep.1988,K.Hill3048(CANB,NSW,PERTH);98.5kmEofHydenonHyden-Norseman
road(i.e. 11.7kmEofcrossroads),17May 1988,L.A.S.Johnson9101 <£M.Johnson(NSW,PERTH);
FrankHannNationalPark,EofLakeKingtowardsNinetyMileTank, 33°04'21"S, 120°13'01"E, 22
Nov. 1994,D. Nicolle 1112(PERTH).
SOUTHAUSTRALIA(westtoeast):EyreHighwaybetweenKimbaandKyancutta,EyrePeninsula,
33°12'20"S, 136T1'36"E,23July 1995,D.Nicolle 1407(AD);c.3kmNEoftheKallimbaentranceon
theDarkePeak-Curtinyeroad,c. 16kmSSEofKimba,29Aug. 1983,J.D.Briggs 1098(AD,CANB);
betweenDarkePeakeandMangalo,EyrePeninsula,33°29'19"S,136°26'15"E,16Feb. 1996,D.Nicolle
1688(AD,CANB);roadbetweencanoetreeandTonkin’sCurrencyCreekWinery,FleurieuPeninsula,
35°21'37"S, 138°49'11"E,28May 1995,D.Nicolle 1362(AD);roadbetweencanoetreeandTonkin’s
CurrencyCreekWinery,FleurieuPeninsula, 11 Apr. 1993,D. Nicolle383 (CANB).
Distributionandhabitat. Subsp.calycogonaoccursinmalleeandlowwoodlandvegetationand,like
the other subspecies of Eucalyptus calycogona, it generally occurs on locally heavier soils. It is
restrictedto threedisjunctregions (Figure 2):
1.CentralandsouthernwheatbeltareasofWesternAustralia,fromnorth-eastofEsperancewesttothe
LakeGracearea,whereitmaybeassociatedwithE.flocktoniae(Maiden)Maiden(subsp.flocktoniae),
E.pileataBlakely,E. depauperataL.Johnson& K.Hill,E. densaBrooker&Hopper(subsp.densa)
andE. oleosaF. Muell.exMiq. (subsp. corvinaL.Johnson&K. Hill).
2.EyrePeninsulainSouthAustralia,especiallyfromKyancuttatoCumminsandeastwardstoSpencer
Gulf,whereitmaybeassociatedwithE.phenaxBrooker&Slee,E. incrassataLabill.,E. leptophylla
F. Muell. ex Miq., E. oleosa, E. cretata Brooker & P. Lang, E. porosa F. Muell. ex Miq. and
E. peninsularis Nicolle.
3. Fleurieu PeninsulainSouthAustralia,fromNewlandHeadnorth-eastwardstonearStrathalbyn.
Floweringperiod. July to November.
Figure 2. Map of southern Australia showing the distribution of Eucalyptus calycogona subspp. calycogona O
trachybasis A andspaffordii + and Eucalyptusprolixa . ,
D. Nicolle, A review of Eucalyptus calycogona including descriptions of three new taxa from SA 307
Conservationstatus. Althoughthedistributionalrangeofthisnewlycircumscribedtypicalsubspecies
hasbeensignificantlyreduced,E. calycogonasubsp.calycogonaisnotconsideredtobeunderthreat.
ItiscommonandwellrepresentedinconservationreservesonEyrePeninsulainSouthAustralia. While
apparently ofmore scattered occurrence in Western Australia, it is known to occur in Frank Hann
National Park and Lake Magenta Nature Reserve. A small population of the eastern outlier of
subsp. calycogona onFleurieu Peninsulaisknown on thecliffs immediately eastofNewland Head
Conservation Park.
Notes and affinities. E. calycogona subsp. calycogona is distinguished within the species by the
smoothbark;thesmallleaves,budsandfruits;budsandfruitswithweaktomoderatelyprominentribs
andthewhitetodarkpinkstaminalfilaments. PreviouslyincludedwithitinE. calycogonasens. lat.
were the rough-barked mallees of eastern South Australia, Victoria and New South Wales
(subsp. trachybasis); populations with coarse leaves, buds and fruit in central Eyre Peninsula
previouslyreferred toas var. staffordiiBlakely (subsp. spaffordii)-, and steep-branched mallets with
veryelongatefruitsfromtheWesternAustralian southerngoldfields (E. prolixa).
OnEyrePeninsulaE. calycogonasubsp. calycogonacommonlyhas staminalfilamentscoloured
various shades of pink; elsewhere it only rarely has coloured filaments. In Western Australia,
E. calycogona subsp. calycogona is partly sympatric with theclosely relatedE. celastroidesTurcz.
subsp. virella Brooker,whichdiffersinitsrough,persistentbarkandsmaller,non-ribbedfruitsthat
areterete,notsquare,intransversesection.Intergradesbetweenthetwotaxaareknowninthewestof
thedistributionofE. calycogona subsp. calycogona, such as westofLakeGrace.
lb.Eucalyptuscalycogonasubsp. trachybasisNicolle,subsp. nov.
A
subspecie typicacorticenon-decorticato, levitertessellato,basi,habitueffusiore, foliis adultis
leviterlatioribus, alabastris fructibusquemajoribus differt.
Typus: TailemBend-LoxtonHighwaybetweenMindarieandWanbi,34°48'31"S,140°13'11"E,South
Australia,30July 1994,D. Nicolle984(holo:AD;iso:CANB,NSW).
Spreadingorstragglymallee2-6mtall,forminglignotubers.Barkroughfor0.5-2.5m,thick,finely
fissured,weaklytoprominentlytessellated,browntogreyordarkgrey,thensmoothabove,dull,grey
overolive-creamtopaleyellow-white,decorticatingin shortribbons. Seedlingleavesoppositefor2
or3pairsthenalternate,petiolate,narrow-lanceolatethennarrow-elliptic,upto35mmlongand8mm
wide, ±concolorous to slightlydiscolorous,dull, green.Adultleavesalternate, petiolate, lanceolate,
45-90 mm long, 8-15 mm wide, concolorous, glossy, green to dark green; reticulation sparse to
moderate,withnumerous largeislandoilglands, lateral veinsat35-55°frommidrib. Inflorescences
axillary,unbranched,7-flowered;pedunclesteretetoangular,5-11 mmlong;pedicels3-5mmlong.
Buds fusiform, 10-12 mmlong, 3.5-5.5 mm diam., hypanthium with fourribs; operculum equal in
widthtohypanthium,smooth,conical,apiculate. Flowerscreamywhitetolesscommonlypalepink.
Stamensinflexed,outerstamenswithoutanthers;fertileanthersversatile,cuboidtogloboid,opening
byporesandslits. Ovulesin4verticalrows. Fruitspedicellate, urceolate,withfourweakribs, 8-13
mm long, 4-7 mm diam.; operculum scar very narrow, level to ascending, to 0.8 mm wide; disc
descending, valves 4, deeply enclosedin fruit. Seeds angular-ovoid, 1-2 mm long, slightly glossy,
tan-brown, with shallow longitudinal grooves and a very finely pitted to smooth reticulum; chaff
glossy,orange-brown. (Figures3,4)
308 Nuytsia Vol. 13, No. 2 (2000)
Figure 3. Eucalyptus calycogona subsp. trachybasis habit from south of Pinnaroo, South Australia.
Selectedspecimens examined. SOUTH AUSTRALIA (west to east): Bute to Port Broughton Rd,
33°44'08"S, 137°58'47"E, 13Sep. 1995,D.Nicolle 1486(AD,CANB,NSW);c. 15kmfromButeon
Port Broughton Rd, 2 July 1967, B. Copley 1356 (AD); 13.1 km N ofMallala towards Balaklava,
(34°20'S, 138°29'E)> 19July 1975,G. Chippendale 1350&M.J.Brennan(AD);TailemBend-Loxton
HighwayjustNofMindarie,34°48'53"S, 140°13'01"E,30July 1994,D.Nicolle985(AD,CANB);just
W
ofLamerooonhighway,35T9'28"S, 140°29'58"E,27Dec. 1993,D.Nicollel32(AD);nearKeith,
21 Aug. 1950,7.1V. Green 188(AD); 10kmNofPinnarootowardsParana(35°08'S, 140°56'E),3Aug.
1976,J.D. Turner19&H. Vos(AD).
W
VICTORIA(westtoeast): 13.2km ofMurrayvilletowardsPinnaroo,(35°15'S, 141°02'E),23July
1975, G. Chippendale 1383 & M.J. Brennan (AD); 20 km N of Rainbow to Hopetoun, (35°49'S,
142°08'E),15Sep. 1977,J.D. Turner118(AD,PERTH,MEL,NSW);WyperfeldNationalPark,Ginap
Track,2miles[3km]WofEagleTrackJunction,3Oct. 1968,A.C. Beauglehole28875 (AD,NPA);
12kmEofOuyentoManangatang, 16Sep. 1977,J.D. Turner122(AD,PERTH,MEL,NSW).
NEWSOUTHWALES: 14.5kmfromTooleybuctowardsKoraleigh,35°07'33"S,143°24T4"E,13Dec.
1999,D.Nicolle2896(AD,CANB).
Distributionandhabitat. Widespread butscatteredin theMidNorth andMurray Malleeregions of
SouthAustralia,extendingintoadjacentareasofVictoriaandjustintoNewSouthWalesnearKoraleigh
(Figure 2). It occurs in mallee shrubland in red-brown loams, occasionally as the dominant plant.
AssociatedspeciesincludeE.socialisF.Muell.exMiq.,E.dumosaA.Cunn.exOxley,E.oleosa(subsp.
oleosa) andE.phenax(subsp.phenax). Brooker(1986)considereditsurprising thatE. calycogona
(subsp.trachybasis)wasabsentfrommostofNewSouthWalesthatisinhabitedbyseveralothermallee
speciescommonwiththattaxoninVictoria. ThesamecouldbesaidofE.gracilisinWesternAustralia
andE.brevipesBrooker(averyrestrictedmalleeofthenorthernwheatbeltofWesternAustralia),both
also ofE. ser. Heterostemones and both surprisingly do not extend further into apparently similar
habitats inWestern Australia.
D. Nicolle, A review of Eucalyptus calycogona including descriptions of three new taxa from SA 309
—
* -* -.- -- «• ***% ¥,
Figure 4. Holotype of Eucalyptus calycogona subsp. trachybasis (D. Nicolle 984J.
Parsons & Rowan (1968) found that in the eastern part of its range, E. calycogona (subsp.
trachybasis)isfoundonheaviersoilsthantherelatedE.gracilis thespatialseparationbeingapossible
,
explanationforthelackofhybridsbetweenthesetwospecies. A similarsituationoccursinWestern
AustraliawithE. calycogona andE.prolixa occurringongenerallyheavier(moreclayey) soilsthat
therelatedE.gracilis,E.brevipes,E.celastroidesandE.quadrans. E.calycogonasubspp.trachybasis
andcalycogonaareallopatricalthoughplantsofsubsp.calycogonaonnorth-easternEyrePeninsula
doshowsometendencytowardssubsp.trachybasiswithoccasionalplantshavingsomepersistentbark
aroundgroundlevel. Theseplantsarenotconsideredtobeintergradesbutaresubsp.calycogonawith
possibly some pastgenetic influence from subsp. trachybasis.
Floweringperiod. July to October.
Conservationstatus.Widespreadandnotconsideredtobeatrisk. AbundantinreservessuchasNgarkat
andScorpionSpringsConservationParksinSouthAustraliaandWyperfeldNationalParkinVictoria.
Etymology.TheepithetisderivedfromGreektrachys-roughandbam-base,referringtothepersistent
rough bark on the lower stems of this subspecies, contrasting with the smooth bark of subspp.
calycogona and spaffordii.
:
310 Nuytsia Vol. 13, No. 2 (2000)
Notesandaffinities.E.calycogonasubsp.trachybasisdiffersfromsubsp.calycogonainthepersistent,
roughbarkonthelowerstems,themorespreading,stragglyhabit,theslightlybroaderadultleavesand
thelargerbuds andfruits.
E. calycogona subsp. trachybasis is the eastern variant ofE. calycogona and is geographically
separatefromtheothertwosubspecies. Plantsofsubsp.trachybasissometimesattainthesameheight
astypicalplantsofsubspp. calycogonaandspaffordii,buttheyareusuallyspreadingandhavemore
crooked,spreadingstemsunliketheerect,straightstemsoftheothertwosubspecies. Theroughbark
characterreadilydistinguishessubsp.trachybasisfromtheothersubspeciesofE. calycogona. Italso
hassomewhatlargerbudsandfruitsthansubsp.calycogonaandmarginallylargerleaves. Therough
barkofthissubspeciesisusuallysomewhattessellated,likethatofotherrough-barkedtaxaintheseries,
viz. E. gracilis,E. celastroidesandE. yilgarnensis(Maiden) Brooker.
lc.EucalyptuscalycogonaTurcz. subsp.spaffordiiNicolle,subsp. nov.
Eucalyptus calycogona Turcz. var. stajfordii Blakely, Key Eucalypts 265 (1934). Type: Yeelanna,
SouthAustralia,June 1917, W.J. Spaffords.n.(syn NSW).
A
subspecie typica foliisjuvenilibus latioribus, foliis adultis crassioribus latioribus, alabastris
fructibusquemajoribus etvaldecostatis differt.
Typus: betweenCumminsandYeelanna,EyrePeninsula,34°11'53"S, 135°43'41"E, SouthAustralia,
16February 1996,D.Nicolle 1682{halo: AD;iso:CANB,PERTH).
Erect-stemmedmallee2-4mtall,forminglignotubers. Barksmooththroughout,lightgreytogrey
overcream,decorticatinginribbons. Seedlingleavesoppositeformanypairs,shortlypetiolate,broad-
lanceolate, 16-22 mm wide,4-7 mmlong, ±concolorous to slightlydiscolorous, dull, green.Adult
leaves alternate, petiolate, lanceolate, 75-105 mm long, 13-24 mm wide, firm (to l mm thick),
concolorous,glossy,darkgreen;reticulationmoderate,oilglandsnumerous,irregular,mostlyisland,
lateral veins at 25-35J from midrib. Inflorescences axillary, unbranched, 7-flowered; peduncles
angular, 10-17 mm long; pedicels taperingto fruit, 5-9mm long. Buds fusiform, 12-15 mmlong
x4-7mmdiam.,hypanthiumwithfoursharpribsorwings;operculumequalinwidthtohypanthium,
smooth,conical, apiculate. Flowerswhite. Stamensinflexed,outerstamens withoutanthers;fertile
anthers versatile, cuboid to globoid, opening by pores and slits. Ovules in 4 vertical rows. Fruits
mm
pedicellate,ovoidtourceolate(notincludingribs), withfourwingsextendingtopedicel, 11-13
long, 6-9mmdiam.;operculum scarverynarrow, levelto ascending, to0.8 mmwide; disc levelto
mm
descending,-valves4, deeplyenclosedinfruit. Seeds compressed-ovoid,to2 long,glossy,tan-
brown, withafinelypittedreticulum;chafforange-brown. (Figures5,6)
Selectedspecimensexamined.SOUTHAUSTRALIA:Yeelanna,EyrePeninsula,(34°09'S, 135°45E),
5June1967,C.Boomsmas.n.(AD);6kmNofCumminsonYeelannaroad,EyrePeninsula,9Aug. 1992,
D.Nicolle86(CANB);NofYeelannatowardsLock,EyrePeninsula,34°10'39"S, 135°43'42"E,17July
1994, D. Nicolle 949 (AD, CANB); Mt Pillowerta, Eyre Peninsula, near Todd Valley, (34°09'S,
135°57'E), 11Nov. 1952,J.D.Purdys.n. (AD).
Distributionandhabitat.RestrictedtocentralEyrePeninsula,mainlyintheYeelanna-Cumminsarea,
occurring inmallee communities (Figure 2). Ithas also been recorded in the nearby Koppio Hills.
Recorded associated species include E.peninsularis, E. pileata, and E. diversifolia Bonpl. (subsp.
D. Nicolle, A review of Eucalyptus calycogona including descriptions of three new taxa from SA 311
Figure 5. Holotype of Eucalyptus calycogona subsp. spaffordii (D. Nicolle 1682).
diversifolia). E. calycogona subspp. calycogona and spaffordii are completely sympatric and few
intergrades are known, however, considering the differences between these two subspecies are
quantitativeandindividualswithcoarseleaves,budsandfruitsofsubspp.calycogonaandtrachybasis
elsewhere approach subsp. spaffordii in leaf, bud and fruit morphology, it is here maintained at an
infraspecificrank.
Floweringperiod. Rowers recordedinJuly.
Conservation status. Most populations occur in remnant vegetation along roadsides and railway
reservesandthetaxonisnotknowntooccurinanyconservationreserves.Theconservationstatus2R
isrecommendedusingcriteriaofBriggs &Leigh(1996).
Etymology. Namedafterthecollectorofthetype,W.J. Spafford(seenotesbelow).
Notesandaffinities. ThistaxonwasfirstrecognizedbyBlakely(1934). UnfortunatelyBlakelycited
thetypespecimeninerrorascollectedbyW.J. StaffordinsteadofcorrectlyW.J.Spafford,andindoing
312 Nuytsia Vol. 13, No. 2 (2000)
Figure 6. Eucalyptus calycogona subsp. spaffordii habit from between Cummins and Yeelanna, Eyre Peninsula, South
Australia.
so, named the variety staffordii Blakely. As the taxon is here recognized as a subspecies, the
opportunity is taken to correctthe name to subsp. spaffordii.
E. calycogonasubsp.spaffordiidiffersfromsubsp. calycogonainthebroaderjuvenileleaves,the
broaderandthickeradultleaves,andthemuchlargerandmoreprominentlyribbedbudsandfruit;from
subsp.trachybasisinthesmoothbark,moreerecthabit,broaderjuvenileleaves,thebroaderandthicker
adultleaves, and thelargerand moreprominently ribbedbuds and fruit; and fromE.prolixa in the
malleehabit, thecoarserleaves andthe wider, moreprominentlyribbedbuds andfruits.
2. EucalyptusprolixaNicolle,sp. nov.
Affinis E. calycogonae sed characteribus sequentibus distinguitur: habitu arborescenti (forma
“mallet”); alabastris fructibusque elongatioribus differt.
Typus: DaniellRailwaySiding,Esperanceroad,WesternAustralia,31 March 1968,S.G.M. Carr615
&D.J. Carr(halo:PERTH04918576;iso:CANB,NSW).
Erect-stemmedmallet6-10 mtall, withasteepbranchinghabit, notknownto formlignotubers.
Bark smooth throughout, grey over coppery-red, decorticating in short ribbons. Seedling leaves
opposite for 4-6 pairs then alternate, shortly petiolate, narrow-lanceolate to narrow-elliptic, up to
mm mm
27 long and 9 wide, slightly discolorous, dull, green. Adult leaves alternate, petiolate,
lanceolate, 65-92 mm long, 8-16mm wide, concolorous, glossy, green; reticulation moderate with
many large, mostly island oil glands, lateral veins at 30-50° from midrib. Inflorescences axillary,
mm mm
unbranched,7-flowered;pedunclesangular,5-14 long;pedicels2.5-10 long. Budsfusiform,
