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Revisión Taxonómica Del Género Molineriella Rouy (Gramineae: Poeae: Airinae) En La Península Ibérica

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Revisión Taxonómica Del Género Molineriella Rouy (Gramineae: Poeae: Airinae) En La Península Ibérica Acta Botanica Malacitana1~P J.Cebrino Cruz & C. Romero-Zarco. Revisión taxonómica del género Molineriella Artículo203 '2,KWWSG[GRLRUJDEPYL&DEHFHUD $UWtFXOR Revisión taxonómica del género Molineriella Rouy (Gramineae: Poeae: Airinae) en la Península Ibérica Jesús Cebrino Cruz & Carlos Romero-Zarco 'HSDUWDPHQWR GH %LRORJtD 9HJHWDO \ (FRORJtD )DFXOWDG GH %LRORJtD 8QLYHUVLGDG GH 6HYLOOD & 3URIHVRU *DUFtD *RQ]iOH]VQ6HYLOOD(VSDxD Correspondencia Resumen C. Romero-Zarco e-mail: [email protected] Se presenta una revisión del género Molineriella Rouy sobre la base del Recibido: 11 septiembre 2017 estudio morfológico de 1.300 ejemplares de herbario. Se trata de un género Aceptado: 26 octubre 2017 PHGLWHUUiQHRTXHWLHQHVXPi[LPDULTXH]DHVSHFtÀFDHQOD3HQtQVXOD,EpULFD Publicado on-line: diciembre 2017 \SDUDHOTXHVHKDQUHFRQRFLGRDTXtWUHVHVSHFLHVSDUDODVFXDOHVVHDSRUWDQ descripciones y mapas de distribución en el área de estudio. Se han designado un neotipo para Aira laevis Brot. y sendos lectotipos para Periballia minuta subsp. australis3DXQHUR\Molineria minuta var. baetica Willk. Se ha descrito como nueva Molineriella laevis var. submutica Cebrino & Romero Zarco. Palabras clave: *UDPLQHDH3RHDH$LULQDH MolineriellaPeriballia3HQtQVXOD ,EpULFD7D[RQRPtD7LSLÀFDFLyQ Abstract Taxonomic revision of the genus Molineriella Rouy (Gramineae: Poeae: Airinae) in the Iberian Península We present the revision of the genus Molineriella Rouy based on a PRUSKRORJLFDOVWXG\RIKHUEDULXPVSHFLPHQV,WLVD0HGLWHUUDQHDQJHQXV ZLWKLWVPD[LPXPVSHFLHVULFKQHVVLQWKH,EHULDQ3HQLQVXOD7KUHHVSHFLHVDUH UHFRJQL]HG GHVFULEHG DQG PDSHG UHODWLQJ WR WKH VWXG\ DUHD$ QHRW\SXV IRU Aira laevis Brot. and lectotypi for Periballia minor subsp. australis3DXQHURDQG Molineria minuta var. baetica Willk. have been designated. Molineriella laevis var. submutica Cebrino & Romero Zarco has been described as new. .H\ ZRUGV *UDPLQHDH 3RHDH $LULQDH Molineriella Periballia ,EHULDQ 3HQLQVXOD7D[RQRP\7\SLÀFDWLRQ Introducción 3RHDH5%U FI6RUHQJHWDOHQDGHODQWH junto con Aira / Periballia 7ULQ Corynephorus /D SUHSDUDFLyQ GH OD VtQWHVLV WD[RQyPLFD GHO 3 %HDXY Antinoria 3DUO Avenella 'UHMHU \ género Molineriella5RX\SDUDHOYROXPHQ;,;GH Helictochloa5RPHUR=DUFRWRGRVHOORVH[FOXVLYRV Flora iberica ha permitido estudiar con detalle este GHO9LHMR0XQGR (XUDVLD\1GHÉIULFD SHTXHxRSHURLQWHUHVDQWHJpQHURTXHDFWXDOPHQWH /LQQHRUHXQLyHQAira un conjunto heterogéneo VH LQFOX\H HQ OD VXEWULEX $LULQDH )U GH OD WULEX de gramíneas caracterizadas por sus espiguillas (VWHWUDEDMRKDVLGRÀQDQFLDGRFRQORVSUR\HFWRVGHO0LQLVWHULRGH(FRQRPtD\&RPSHWLWLYLGDGFlora iberica,; \ ; &*/ \ &*/3 UHVSHWLYDPHQWH FRÀQDQFLDGRV FRQ IRQGRV )('(5 HQ HO JUXSR GH LQYHVWLJDFLyQ510GHO3ODQ$QGDOX]GH,QYHVWLJDFLyQ -XQWDGH$QGDOXFtD(VSDxD Acta Botanica Malacitana1~P ELÁRUDVFRQGRVJOXPDVVHPHMDQWHV /LQQHR =DUFR 'HYHVD %ROzV 9LJR 'H ODV HVSHFLHV GHVFULWDV HQ OD SULPHUD 5RPHUR 7LVRQ )RXFDXOW (VWH edición de Species Plantarum /LQQHR criterio está apoyado por los resultados del estudio VRORGRVAira praecox/\Aira caryophyllea ÀORJHQpWLFR GH '|ULQJ TXLHQ HQFRQWUy /SHUPDQHFHQFODVLÀFDGDVHQHOJpQHURAira en FRQ PDUFDGRUHV PROHFXODUHV FORURSOiVWLFRV TXH VXDFWXDOGHOLPLWDFLyQ\XQDVRODGHVXVHVSHFLHV Periballia y especies de los géneros Avenella Aira minuta/VHLQFOX\HHQHOJpQHURMolineriella 'UHMHU Corynephorus 3%HDXY\ Aira IRPDQ XQ en la actualidad. Nuevas especies fueron descritas grupo diferente del compuesto por las especies GXUDQWHORVVLJORV;9,,,\;,;(QWUHHOODVVRQGH de Molineriella, las cuales están más relacionadas especial interés para este estudio Aira involucrata con Helictotrichon subg. Pratavenastrum 9LHUK &DYA. laevis%URWA. glabrata Brot. y A. lendigera +ROXE DFWXDOPHQWH HO JpQHUR Helictochloa /DJ (VWDV HVSHFLHV IXHURQ FODVLÀFDGDV SRU 5RPHUR =DUFR $XQTXH ODV UHODFLRQHV ÀOpWLFDV diversos autores en los géneros Airopsis 'HVY del género Molineriella lo relacionan con el género Catabrosa 3 %HDXY Periballia 7ULQ Molineria Helictochloa PRUIROyJLFDPHQWH Molineriella se 3DUORMolineriella5RX\GDQGRRULJHQDXQFLHUWR parece más a Aira o Peribalia que a Helictochloa. Q~PHURGHFRPELQDFLRQHVQRPHQFODWXUDOHV /RV GDWRV FDULROyJLFRV GLVSRQLEOHV $OEHUV 9DULRV DXWRUHV GHO VLJOR ;; VLJXLHQGR HO Chromosome Counts DatabaVH YHUVLRQ FULWHULR GH $VFKHUVRQ \ *UDHEQHU KDQ KWWSFFGEWDXDFLO! IPCN Chromosome mantenido un concepto amplio del género Reports KWWSZZZWURSLFRVRUJ3URMHFW,3&1! PeriballiaLQFOX\HQGRDODVHVSHFLHVTXHHQHVWH FRQVXOWDGRHOGHVHSWLHPEUHGH PXHVWUDQ estudio se separan en el género Molineriella XQQ~PHUREiVLFRGHFURPRVRPDVx = 7 para los criterio aceptado en las principales recopilaciones géneros Aira y Periballia VLQ HPEDUJR HQ ODV JHQpULFDV SXEOLFDGDV D QLYHO PXQGLDO &OD\WRQ especies del género Molineriella la mayoría de 5HQYRL]H :DWVRQ 'DOOZLW] DVt ORV UHFXHQWRV FURPRVyPLFRV LQGLFDQ XQ Q~PHUR FRPR HQ OD PRQRJUDItD GH 3DXQHUR 6LQ básico x FRQDOJXQRVUHFXHQWRVGLVFUHSDQWHV HPEDUJR3DXQHUR HQEDVHDOHVWXGLRGH para M. minuta y M. laevis. la anatomía foliar y de otros caracteres anatómicos /D IUHFXHQFLD GH PDWHULDOHV GH KHUEDULR PDO GH ODV HVSHFLHV HVSDxRODV TXH VRQ WRGDV ODV LGHQWLÀFDGRV R FRQIXQGLGRV FRQ HVSHFLHV GHO FRQRFLGDVKDVWDODIHFKD GHIHQGLyODVHSDUDFLyQ género Aira MXVWLÀFD OD QHFHVLGDG GH RIUHFHU XQD de dos géneros: Periballia [P. involucrata &DY información más detallada sobre la taxonomía y 7ULQ@\Molineria [incluyendo M. minuta / 3DUO variabilidad del género. M. australis 3DXQHUR 3DXQHUR\Molineria laevis %URW +DFN@ 3UHYLDPHQWH 5RX\ KDEtD Material y métodos SXHVWR GH PDQLÀHVWR OD LOHJLWLPLGDG GH Molineria 3DUOSRUVHUKRPyQLPRSRVWHULRUGHMolineria Colla 3DUDHOHVWXGLRPRUIRPpWULFRVHKDQXWLOL]DGR +\SR[LGDFHDH SXEOLFDQGRHQVXOXJDUXQQXHYR aproximadamente 1.300 pliegos procedentes de nombre: Molineriella5RX\FRQMolineriella minuta ORVKHUEDULRVVLJXLHQWHV VHJ~Q7KLHUV / 5RX\FRPRWLSRLPSOtFLWR/DVHSDUDFLyQGHORV $%+%&&2,(/9()&2**'$+95-$&$ géneros Periballia y Molineriella ha sido aceptada /(% /,6( /,6, /,68 0$ 0*& 6$/$ 6$17 HQYDULRVHVWXGLRVÁRUtVWLFRV 7XWLQ5RPHUR 6(98(9+81(;\9$/ Caracteres mofológicos estudiados 3RUWH DOWXUDGHODSODQWDFRPSOHWD /RQJLWXGGHOOHPD 7DOOR H[FOXLGDODLQÁRUHVFHQFLD /RQJLWXGGHODSiOHD 'LiPHWURGHOWDOOR $ULVWD /RQJLWXGGHODVKRMDV OLPER &DOOR IRUPD\ORQJLWXG $QFKXUDGHODVKRMDV OLPER 3HORVGHOFDOOR SUHVHQFLD\ORQJLWXG /tJXODVVXSHULRUHVHLQIHULRUHV /RQJLWXGGHODVDQWHUDV /RQJLWXGGHODSDQtFXOD /RGtFXODV 1~PHURGHUDPLÀFDFLRQHVGHODSDQtFXOD /RQJLWXGGHOIUXWR /RQJLWXGGHODHVSLJXLOOD 'LiPHWURGHOIUXWR Gluma superior e inferior Tabla 1. Caracteres morfológicos estudiados. Table 1. Morphological characters studied. J.Cebrino Cruz & C. Romero-Zarco. Revisión taxonómica del género0ROLQHULHOOD /RV FDUDFWHUHV HVWXGLDGRV VH UHODFLRQDQ SRU 3DXQHUR VH DxDGH DTXt OD GLIHUHQFLD HQ OD WDEOD /DV PHGLGDV GH ODV HVSLJXLOODV \ HQ OD PRUIRORJtD GHO SHG~QFXOR GH OD HVSLJXLOOD de las piezas espiculares se realizaron en una En P. involucrata, HO SHG~QFXOR SUHVHQWD XQ OXSD ELQRFXODU /(,&$ 6( KDVWD DXPHQWRV engrosamiento apical anguloso que alcanza utilizando una regleta sólida pautada en décimas aproximadamente el doble de la anchura de la de milímetro con una precisión subjetiva SDUWH PHGLD PLHQWUDV TXH HQ ODV HVSHFLHV GHO DSUR[LPDGDGHPP3DUDHOHVWXGLRGHWDOODGR género Molineriella el engrosamiento apical del GHODPRUIRORJtDGHOFDOORVHXWLOL]yXQPLFURVFRSLR SHG~QFXORQRHVDQJXORVR\DOFDQ]DDOPHQRVHO HOHFWUyQLFR3UR[3: SDUWQU triple de la anchura de la zona media. PRGHOQU /RVPDSDVGHGLVWULEXFLyQVHUHDOL]DURQ PHGLDQWHHOSURJUDPD$UF*,6YHU $UF*,6 Caracteres taxonómicos (65,,QF5HGODQGV&$86$$UF*,6 En la tabla 1 se relacionan los caracteres DQDOL]DGRV HQ HO PDWHULDO GH KHUEDULR HVWXGLDGR Resultados comentándose a continuación los de mayor interés taxonómico. Delimitación morfológica del género Porte. 7RGDVODVHVSHFLHVVRQDQXOHVXQLFDXOHV 'HOJpQHURAiraHQHOTXHLQLFLDOPHQWHIXHURQ RPXOWLFDXOHVFRQUDt]ÀEURVDMolineriella minuta GHVFULWDVVXVHVSHFLHVMolineriellaGLÀHUHSRUXQD UH~QH ODV SODQWDV GH PHQRU SRUWH GHQWUR GHO relación diferente entre la longitud de las glumas JpQHURTXHQRVREUHSDVDQSRUORJHQHUDOORV \GHORVOHPDVDVtFRPRODSUHVHQFLD\SRVLFLyQ FP LQFOX\HQGRDODLQÁRUHVFHQFLD PLHQWUDVTXH de la arista. En MolineriellaORVOHPDVDOFDQ]DQR en M. laevis y M. australis llegan a alcanzar hasta VXSHUDQORVH[WUHPRVGHODVJOXPDVVRQREWXVR FP (Q ODV GHVFULSFLRQHV ODV PHGLGDV GH ORV GHQWLFXODGRVQRDULVWDGRVRFRQXQDDULVWDUHFWD WDOORVH[FOX\HQODLQÁRUHVFHQFLD R ÁH[LRQDGD TXH QDFH HQ WHUFLR VXSHULRU GHO Longitud del lema. /RVOHPDVYDUtDQGHD GRUVR GHO OHPD 3RU HO FRQWUDULR HQ ODV HVSHFLHV PPGHORQJLWXG/RVWDPDxRVPHQRUHVGH de AiraORVOHPDVTXHGDQRFXOWRVSRUODVJOXPDV mm corresponden solo a M. minuta\ORVYDORUHV VRQEtÀGRVFRQGRVGLHQWHVDJXGRVHQHOiSLFH\ GHPPRVXSHULRUHVDODVRWUDVGRVHVSHFLHV HQ OD PD\RUtD GH ODV HVSHFLHV OOHYDQ XQD DULVWD Callo. El callo puede ser glabro o más o menos claramente geniculada que nace en el tercio inferior peloso. En M. laevis y M. minuta, el callo puede GHOGRUVRDOPHQRVHQODÁRUDSLFDOGHODHVSLJXLOOD ser casi enteramente glabro o presentar pelos Periballia involucrata se reconoce entre las UHODWLYDPHQWH FRUWRV UHFWRV \ UtJLGRV KDVWD GH HVSHFLHV GH OD VXEWULEX $LULQDH SRU OD SUHVHQFLD PPPLHQWUDVTXHHQM. australis siempre hay de uno o más verticilos de ramas estériles en los SHORV UHODWLYDPHQWH ODUJRV > PP@ PiV QXGRV LQIHULRUHV GH OD SDQtFXOD $ HVWH FDUDFWHU ÀQRVRQGXODGRV\PHQRVUtJLGRV ÀJ morfológico y a otros anatómicos destacados Arista. /RVOHPDVVRQSRUORJHQHUDODULVWDGRV Figura 1'HWDOOHGHODEDVHGHOOHPD FDOOR HQODVHVSHFLHVGHOJpQHURMolineriellaa M. minuta, 3R]REODQFRUtR *XDGDUUDPLOOD&yUGRED 6(9 b M. australis,)XHQWHRYHMXQD&yUGRED 6(9 c M. laevis var. laevis, 9LOODQXHYDGHORV&DVWLOOHMRV+XHOYD
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