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)表2. — 亚洲绿丝藻新种（Virescentia asiatica sp. nov.）与绿丝藻属（Virescentia (Sirodot) Necchi, D.C.Agostinho & M. L.Vis.）其他已知物种的形态学对比一览表 | 特征 | 亚洲绿丝藻新种（Virescentia asiatica sp. nov.） | Virescentia crispata | Virescentia guangxiensis | Virescentia gulbenkiana | Virescentia helminthosa | Virescentia viride-americana | Virescentia viride-brasiliensis | Virescentia vogesiaca | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 藻体分枝类型 | 弯曲 | 伸直 | 伸直 | 伸直 | 伸直 | 伸直 | 伸直 | 伸直 | | 轮枝形状 | 邻接、倒锥形或梨形 | 邻接、倒锥形或梨形 | 邻接或分离、桶形或球形 | 邻接或分离、桶形或球形 | 邻接或分离、桶形、球形或梨形 | 邻接或分离、桶形、球形或梨形 | 邻接或分离、桶形、球形或梨形 | 邻接或分离、桶形、倒锥形、梨形或球形 | | 直径（μm）；初级束细胞数 | 220-1060；7-14 | 150-350；6-13 | 250-350；5-7 | 430-810；8-13 | 300-800；8-15 | 300-800；8-15 | 280-940；8-19 | 340-700；7-14 | | 束状体形状 | 伸直 | 弯曲 | 伸直 | 伸直 | 伸直 | 伸直 | 伸直 | 伸直 | | 果胞枝形状 | 伸直 | 稍弯曲 | 伸直 | 伸直 | 稍弯曲 | 稍弯曲 | 伸直 | 伸直 | | 果胞长度（果胞基部细胞+受精丝） | 65-80μm | 54-75μm | 未观察到 | 20-39μm | 40-79μm | 40-79μm | (30-)40-77μm | 40-110μm | | 组成细胞数（扭转状态下的组成细胞数） | 3-4 | 3-4 | 未观察到 | 3-12 | 3-11 | 3-11 | 1-7 | (4-)8-20 | | 果孢子体 | | | | | | | | | | 每轮数量 | 1-2(-4) | 1-2 | 未观察到 | 1-3 | 1-2 | 1-2 | 1-2 | 1-2 | | 直径（μm） | 140-800 | 140-300 | 未观察到 | 120-300 | 150-420 | 150-420 | (130-)140-390 | 200-550 | | 高度（μm） | 100-750 | 100-250 | 未观察到 | 60-150 | 100-320 | 100-320 | 70-200(-240) | 100-300 | | 形状 | 半球形 | 球形 | 未观察到 | 圆柱形 | 半球形 | 半球形 | 球形 | 球形 | | 产孢丝丝状体 | | | | | | | | | | 细胞层数 | 3-6 | 3-5 | 未观察到 | 未观察到 | 2-5 | 3-7 | 3-7 | 3-5 | | 形状 | 圆柱形 | 圆柱形 | 未观察到 | 未观察到 | 圆柱形 | 圆柱形 | 圆柱形 | 圆柱形或桶形 | | 果孢子囊 | | | | | | | | | | 长度（μm） | 34-40 | 14-30 | 未观察到 | 10-18 | 14-20.5 | 14-20.5 | 15-24 | 19-35 | | 直径（μm） | 18-20 | 8-10 | 未观察到 | 6.5-10 | 8.5-12.5 | 8.5-12.5 | 8.5-12 | 10-24 | | 形状 | 倒卵形 | 棒形或倒卵形 | 未观察到 | 倒卵形或梨形 | 倒卵形或梨形 | 倒卵形或梨形 | 倒卵形或梨形 | 倒卵形、梨形或椭圆形 | | 受精丝形状 | 具柄、圆柱形、棒形或椭圆形 | 具柄、圆柱形 | 未观察到 | 具柄、棒形或圆柱形 | 具柄、圆柱形，有时分叉或具结节 | 具柄、圆柱形，有时分叉或具结节 | 具柄、棒形或圆柱形 | 具柄、棒形或近圆柱形 | | 精子囊 | | | | | | | | | | 直径（μm） | 5-8 | 6-8 | 未观察到 | 4-6 | 5-7 | 5-7 | 4-8 | 4-9 | | 形状 | 球形或倒卵形 | 球形或倒卵形 | 未观察到 | 球形 | 球形 | 球形 | 球形 | 球形或倒卵形 | | 生长着生位置 | 初级或次级束状体 | 初级或次级束状体 | 未观察到 | 初级束状体 | 初级或次级束状体 | 初级或次级束状体 | 初级或次级束状体 | 初级或次级束状体 | | 特化膨大细胞 | 无 | 无 | 存在 | 无 | 无 | 无 | 无 | 无 | | 参考文献 | 本研究 | Necchi等(2018) | Fang等(2021) | Necchi等(2018) | Necchi等(2018) | Necchi等(2018); Krueger-Hadfield等(2024) | Necchi等(2018) | Necchi等(2018) |