Virescentia asiatica sp. nov. (Batrachospermales, Rhodophyta), a new freshwater red alga from East Asia Author Aristya, Ganies Riza Faculty of Biology, Universitas Gadjah Mada, Yogyakarta 55281 (Indonesia) Author Fontana, Silvia Department of Life Science & Center for Ecology and Environment, Tunghai University, Taichung 40704 (Taiwan) Author Pok, Wai-Lun Department of Life Science & Center for Ecology and Environment, Tunghai University, Taichung 40704 (Taiwan) Author Necchi, Orlando Zoology and Botany Department, São Paulo State University, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP 15054 - 000 (Brazil) Author Liu, Shao-Lun Department of Life Science & Center for Ecology and Environment, Tunghai University, Taichung 40704 (Taiwan) shaolunliu@gmail.com text Cryptogamie, Algologie 2024 2024-08-27 45 7 77 88 https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/algologie2024v45a7.pdf journal article 301785 10.5252/cryptogamie-algologie2024v45a7 a1145fc5-2e7a-4aee-925d-da4b7c299fd5 1776-0984 13646701
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 vogesiaca
Thallus branch typeCurveStraightStraightStraight StraightStraightStraightStraightStraight
WhorlShapeContiguous, 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 spherical
Diameter (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 7-14
Fascicle shapeStraightCurvedStraightStraight StraightStraightStraightStraightStraight
Carpogonial branches shapeStraightSlightly curvedStraightStraight Slightly curvedSlightly curvedStraightStraightStraight
CarpogoniumLength (carpogonium basal cell + trichogyne)65-8054-75Not observed20-39 40-7940-79(30-)40-7740-11020-45
Composed cell number (composed cell no. in twisted)3-43-4Not observed3-12 3-113-111-71-7(4-)8-20
ShapeDisc or barrel-shapedDisc- or barrel-shapedNot observedDisc-shaped Disc-shapedDisc-shapedDisc-shapedDisc-shapedDisc-shaped
CarposporophyteNo. 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 Spherical
Gonimoblast 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 cells
CarposporangiumLength (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 Obovoid
TrichogyneShapeStalked, 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 ellipsoidal
SpermatangiaDiameter (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 Spherical
Growth 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 fascicle
Special expansion cellsAbsenceAbsencePresenceAbsence AbsenceAbsenceAbsenceAbsenceAbsence
ReferencesThis 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)