TABLE 2. — A in Virescentia asiatica sp. nov. (Batrachospermales, Rhodophyta), a new freshwater red alga from East Asia

TABLE 2. — A list showing the morphological comparison between Virescentia asiatica sp. nov. and other known species of Virescentia (Sirodot) Necchi, D.C.Agostinho & M. L.Vis.
CharacterVirescentia asiaticaVirescentia crispataVirescentia guangxiensisVirescentia gulbenkianaVirescentia helminthosaVirescentia viride-americanaVirescentia viride-brasiliensisVirescentia vogesiacaThallus branch typeCurveStraightStraightStraight StraightStraightStraightStraightStraightWhorlShapeContiguous, obconic or pear-shapedContiguous, obconic, or pear-shapedContiguous or separated, barrel-shaped, or sphericalContiguous or separated, barrel-shaped, or spherical Contiguous or separated, barrel-shaped, spherical or pear-shapedContiguous or separated, barrel-shaped, spherical or pear-shapedContiguous or separated, barrel-shaped, spherical or pear-shapedContiguous or separated, barrel-shaped, spherical, pear-shaped or obconicContiguous or separated, barrel-shaped, obconic, pear-shaped or sphericalDiameter (μm) Primary fascicle cell no.220-1060 7-14150-350 6-13250-350 5-7430-810 8-13 300-800 8-15300-800 8-15280-940 8-19280-1100 7-18340-700 7-14Fascicle shapeStraightCurvedStraightStraight StraightStraightStraightStraightStraightCarpogonial branches shapeStraightSlightly curvedStraightStraight Slightly curvedSlightly curvedStraightStraightStraightCarpogoniumLength (carpogonium basal cell + trichogyne)65-8054-75Not observed20-39 40-7940-79(30-)40-7740-11020-45Composed cell number (composed cell no. in twisted)3-43-4Not observed3-12 3-113-111-71-7(4-)8-20ShapeDisc or barrel-shapedDisc- or barrel-shapedNot observedDisc-shaped Disc-shapedDisc-shapedDisc-shapedDisc-shapedDisc-shapedCarposporophyteNo. per whorl Diameter Height Shape1-2(-4) 140-800 100-750 Hemispherical1-2 140-300 100-250 SphericalNot observed Not observed Not observed Not observed1-3 120-300 60-150 Cylindrical 1-2 150-420 100-320 Hemi-spherical1-2 150-420 100-320 Hemi-spherical1-2 (130-)140-390 70-200(-240) Spherical1-2 200-550 100-300 Spherical1-2 140-330 95-175 SphericalGonimoblast filamentCell layer no. Shape3-6 Cylindrical3-5 CylindricalNot observed Not observed2-5 Cylindrical 3-7 Cylindrical3-7 Cylindrical3-5 Cylindrical3-6 Cylindrical or barrel-shaped4-7 Cylindrical or ellipsoidal cellsCarposporangiumLength (μm) Diameter (μm) Shape34-40 18-20 Obovoid14-30 8-10 Clavate or obovoidNot observed Not observed Not observed10-18 6.5-10 Obovoid or pear-shaped 14-20.5 8.5-12.5 Obovoid or pear-shaped14-20.5 8.5-12.5 Obovoid or pear-shaped15-24 8.5-12 Obovoid or pear-shaped19-35 10-24 Obovoid, pear-shaped or ellipsoidal13-19 8.5-13 ObovoidTrichogyneShapeStalked, cylindrical, clavate or ellipsoidalStalked, cylindricalNot observedStalked, clavate or cylindrical,Stalked, cylindrical, sometimes bifurcated or with knobs,Stalked, cylindrical, sometimes bifurcated or with knobsStalked, clavate or cylindricalStalked, clavate or sup-cylindricalStalked, clavate or ellipsoidalSpermatangiaDiameter (μm) Shape5-8 Spherical or obovoid6-8 Spherical or obovoidNot observed Not observed4-6 Spherical 5-7 Spherical5-7 Spherical4-8 Spherical4-9 Spherical or obovoid5-8 SphericalGrowth placementPrimary or Secondary fasciclePrimary or Secondary fascicleNot observedPrimary fascicle Primary or secondary fasciclePrimary or secondary fasciclePrimary or Secondary fasciclePrimary or secondary fasciclePrimary fascicle or secondary fascicleSpecial expansion cellsAbsenceAbsencePresenceAbsence AbsenceAbsenceAbsenceAbsenceAbsenceReferencesThis studyNecchi et al. (2018)Fang et al. (2021)Necchi et al. (2018) Necchi et al. (2018)Necchi et al. (2018)Necchi et al. (2018); Krueger-Hadfield et al. (2024)Necchi et al. (2018)Necchi et al. (2018)