| Name | Author | Source | Citation | Year |
|---|
| COMPACTONOSTOC | F. Cai & R. Li in Cai et al. | Phycologia | 58: 201 | 2019 |
| COMPACTONOSTOC | Fangfang Cai & Renhui Li | Notulae algarum | 121: 1 (cf. Phycologia 58(2): 201 for description) | 2019 |
| CROCOSPHAERA | J.P. Zehr, Rachel A. Foster, J. Waterbury & E. Webb in Mares et al. | Journal of Phycology | 55: 601 | 2019 |
| Chaetoceros brevispinosus | X.J. Xu, Yang Li & N. Lundholm in Xu et al. | Phycologia | 58: 615, figs. 1-23 | 2019 |
| Chaetoceros ornatus | (A. Chamnansinp, Ø. Moestrup & N. Lundholm) X.J. Xu, Yang Li & N. Lundholm in Xu et al. | Phycologia | 58: 617 | 2019 |
| Coelastrella rubescens var. oocystiformis | Qinghua Wang, Huiyin Song, Xudong Liu, Guoxiang Liu & Zhengyu Hu in Wang et al. | Journal of Phycology | 55: 1298, fig. 4E,H, 5A,D | 2019 |
| Coelastrella tenuitheca | Qinghua Wang, Huiyin Song, Xudong Liu, Guoxiang Liu & Zhengyu Hu in Wang et al. | Journal of Phycology | 55: 1298, fig. 6 | 2019 |
| Coelastrella thermophila | Qinghua Wang, Huiyin Song, Xudong Liu, Guoxiang Liu & Zhengyu Hu in Wang et al. | Journal of Phycology | 55: 1295, fig. 1A-H, fig. 22A-C | 2019 |
| Coelastrella thermophila var. globulina | Qinghua Wang, Huiyin Song, Xudong Liu, Guoxiang Liu & Zhengyu Hu in Wang et al. | Journal of Phycology | 55: 1296, fig. 1I-P, fig. 2D-F | 2019 |
| Coelastrella yingshanensis | Qinghua Wang, Huiyin Song, Xudong Liu, Guoxiang Liu & Zhengyu Hu in Wang et al. | Journal of Phycology | 55: 1297, fig. 3A-H, fig. 2G,I | 2019 |
| Compactonostoc shennongjiaense | Fangfang Cai & Renhui Li | Notulae algarum | 121: 1 (cf. Phycologia 58(2): 202, figs. 1-6 for description) | 2019 |
| Compactonostoc shennongjiaense ('shennongjiaensis') | F. Cai & R. Li in Cai et al. | Phycologia | 58: 202, figs. 1-6 | 2019 |
| Crocosphaera chwakensis | J. Mares & J.R. Johansen in Mares et al. | Journal of Phycology | 55: 602, fig. 4v, fig. 5r, fig. 6s, fig. 13g,h,n | 2019 |
| Crocosphaera subtropica | J. Mares & J.R. Johansen in Mares et al. | Journal of Phycology | 55: 602, fig. 4u, fig. 5q, fig. 6r, fig. 13d-f | 2019 |
| Crocosphaera watsonii | J.P. Zehr, Rachel A. Foster, J. Waterbury & E. Webb in Mares et al. | Journal of Phycology | 55: 601, fig. 4t, fig. 5p, fig. 6q, fig. 13a-c | 2019 |
| Cyanothece svehlovae | J. Mares, J.R. Johansen & T. Hauer in Mares et al. | Journal of Phycology | 55: 597, fig. 3c,d,g,h,k,l, fig. 7b-f | 2019 |
| Dactylodinium arachnoides | W.M. Lum, K. Takahashi, H. Takayama & M. Iwataki in Lum et al. | Phycologia | 58: 663, figs. 1-45 | 2019 |
| Dictyota falklandica | F.C. Küpper, A.F. Peters, A.O. Asensi & O. DeClerck in Küpper et el. | Phycologia | 58: 644, figs. 2-5, 7-14 | 2019 |
| Fragilaria agnesiae | M. Kahlert & F. Rimet in Kahlert et al. | Journal of Phycology | 55: 959, fig. 3 | 2019 |
| Fragilaria heatherae | M. Kahlert & M.G. Kelly in Kahlert et al. | Journal of Phycology | 55: 961, fig. 4 | 2019 |
| Fragilaria joachimii | M. Kahlert in Kahlert et al. | Journal of Phycology | 55: 963, fig. 5 | 2019 |
| Galene leptoclados | C.W. Schneider, T.R. Popolizio & G.W. Saunders in Schneider et al. | Phycologia | 58: 691, figs. 2-8 | 2019 |
| Gloeothece aequatorialis | J. Mares & J.R. Johansen in Mares et al. | Journal of Phycology | 55: 598, fig. 4a,b, 5a,b, 6a,b, 8a-d | 2019 |
| Gloeothece aurea | J. Mares, T. Hauer, & J.R. Johansen in Mares et al. | Journal of Phycology | 55: 598, fig. 4c, fig. 5c, fig. 6c, fig. 8e-h | 2019 |
| Gloeothece bryophila | J.R. Johansen in Mares et al. | Journal of Phycology | 55: 598, fig. 4d, fig. 5d,e, fig. 6d,e, fig. 9a-c | 2019 |
| Gloeothece citriformis | J. Mares & J.R. Johansen in Mares et al. | Journal of Phycology | 55: 599, fig. 4f,g, 5f,g, 6f,g, 9d-g | 2019 |
| Gloeothece reniformis | J. Mares, T. Hauer, & J.R. Johansen in Mares et al. | Journal of Phycology | 55: 599, fig. 4,j, fig. 5i,j, fig. 6g,h, fig. 10a-e | 2019 |
| Gloeothece tonkinensis | J. Mares & J.R. Johansen in Mares et al. | Journal of Phycology | 55: 599, fig. 4m, 5k, 6m, 11a-f | 2019 |
| Gloeothece verrucosa | J. Mares & J.R. Johansen in Mares et al. | Journal of Phycology | 55: 601, fig. 4n, 5l, 6n, 11g-j | 2019 |
| HOWELLA | C.W. Schneider, T.R. Popolizio, L.G. Kraft & G.W. Saunders | Phycologia | 58: 692 | 2019 |
| Harveylithon catarinense | I.O. Costa, P.A. Horta & J.M.C. Nunes in Costa et al. | Journal of Phycology | 55: 1374, figs. 4, 5 | 2019 |
| Harveylithon maris-bahiense ('maris-bahiensis') | I.O. Costa, P.A. Horta & J.M.C. Nunes in Costa et al. | Journal of Phycology | 55: 1376, fig. 6 | 2019 |
| Harveylithon riosmenae ('riosmenum') | I.O. Costa, P.A. Horta & J.M.C. Nunes in Costa et al. | Journal of Phycology | 55: 1377, figs. 7, 8 | 2019 |
| Howella gorgoniarum | C.W. Schneider, T.R. Popolizio & G.W. Saunders in Schneider et al. | Phycologia | 58: 692, figs. 9-14 | 2019 |
| Howella latifrons | (Endlicher & Diesing) C.W. Schneider, L.G. Kraft & G.W. Saunders in Schneider et al. | Phycologia | 58: 693 | 2019 |
| Howella lemanniana | (Harvey) C.W. Schneider, L.G. Kraft & G.W. Saunders in Schneider et al. | Phycologia | 58: 693 | 2019 |
| KARTHICKIA | J.P. Kociolek, A. Glushchenko & M. Kulikovskiy in Glushchenko et al. | Phycologia | 58: 606 | 2019 |
| Karthickia verestigmata | A. Glushchenko, M. Kulikovskiy & J.P. Kociolek in Glushchenko et al. | Phycologia | 58: 606, figs. 1-24 | 2019 |
| LEPTOTHOE | D. Konstantinou & S. Gkelis in Konstantinou et al. | Journal of Phycology | 55: 885 | 2019 |
| Leptothoe kymatousa | D. Konstantinou & S. Gkelis in Konstantinou et al. | Journal of Phycology | 55: 888, fig. 4D-F, fig. 6C,D | 2019 |
| Leptothoe sithoniana | D. Konstantinou & S. Gkelis in Konstantinou et al. | Journal of Phycology | 55: 885, fig. 4A, fig. 6A | 2019 |
| Leptothoe spongobia | D. Konstantinou & S. Gkelis in Konstantinou et al. | Journal of Phycology | 55: 888, fig. 4B,C, fig. 6B | 2019 |
| Lithophyllum kuroshioense | A. Kato & M. Baba | Phycologia | 58: 652, figs. 11-21 | 2019 |
| Lobophora adpressa | O. Camacho & C. Fernández-García in Camacho et al. | Journal of Phycology | 55: 614, fig. 2A,B | 2019 |
| Lobophora cocoensis | O. Camacho & C. Fernández-García in Camacho et al. | Journal of Phycology | 55: 617, fig. 2C,D | 2019 |
| Lobophora colombiana | O. Camacho & S. Fredericq in Camacho et al. | Journal of Phycology | 55: 617, fig. 2E,F | 2019 |
| Lobophora crispata | O. Camacho & S. Fredericq in Camacho et al. | Journal of Phycology | 55: 617, fig. 2G,H | 2019 |
| Lobophora delicata | O. Camacho & S. Fredericq in Camacho et al. | Journal of Phycology | 55: 618, fig. 3A,B | 2019 |
| Lobophora dispersa | O. Camacho & D.W. Freshwater, & S. Fredericq in Camacho et al. | Journal of Phycology | 55: 619, fig. 3C,D | 2019 |
| Lobophora panamensis | O. Camacho, C. Fernández-García & S. Fredericq in Camacho et al. | Journal of Phycology | 55: 619, fig. 3E,F | 2019 |
| Lobophora tortugensis | O. Camacho & S. Fredericq in Camacho et al. | Journal of Phycology | 55: 619, fig. 3G,H | 2019 |
| MICRORHIZOIDEA | R. Wetherbee in Wetherbee et al. | Journal of Phycology | 55: 1223 | 2019 |
| MONTAGNIA | O. Necchi, M.L. Vis & A.S. Garcia in Necchi et al. | Phycologia | 58: 587 | 2019 |
| MYXACORYS | N. Pietrasiak & J.R. Johansen in Pietrasiak et al. | Journal of Phycology | 55: 980 | 2019 |
| Melanothamnus maniticola | K.A. Woodworth, T.A. Frankovich & D.W. Freshwater | Journal of Phycology | 55: 1242, fig. 2 | 2019 |
| Microrhizoidea pickettheapsiorum | R. Wetherbee in Wetherbee et al. | Journal of Phycology | 55: 1224, figs. 2, 3 | 2019 |
| Montagnia macrospora | (Montagne) O. Necchi, M.L. Vis & A.S. Garcia in Necchi et al. | Phycologia | 58: 587 | 2019 |
| Myxacorys californica | N. Pietrasiak & J.R. Johansen in Pietrasiak et al. | Journal of Phycology | 55: 982, fig. 2N-U | 2019 |
| Myxacorys chilensis | N. Pietrasiak & J.R. Johansen in Pietrasiak et al. | Journal of Phycology | 55: 981, fig. 2A-M, fig. 3A-D | 2019 |
| ODORELLA | S. Shalygin, P.V. Zimba & I.-S.Huang in Shalygin et al. | Journal of Phycology | 55: 511 | 2019 |
| Odorella benthonica | S. Shalygin, P.V. Zimba & I.-S.Huang in Shalygin et al. | Journal of Phycology | 55: 511, figs. 1, 2 | 2019 |
| Phymatolithon dosungii | S.Y. Jeong, B. Won & T.O. Cho | Phycologia | 58: 594, figs. 4-23 | 2019 |
| Phymatolithon koreanum | S.Y. Jeong, B. Won & T.O. Cho | Phycologia | 58: 598, figs. 24-35 | 2019 |
| RIPPKAEA | J.R. Johansen & J. Mares in Mares et al. | Journal of Phycology | 55: 603 | 2019 |
| Rippkaea orientalis | J.R. Johansen & J. Mares in Mares et al. | Journal of Phycology | 55: 603, fig. 4p, fig. 5u, fig. 6p, fig. 13k,l,o | 2019 |
| ZEHRIA | J.R. Johansen & J. Mares in Mares et al. | Journal of Phycology | 55: 603 | 2019 |
| Zehria floridana | J.R. Johansen & J. Mares in Mares et al. | Journal of Phycology | 55: 603, fig. 13i,j | 2019 |