New insights into the morphology, taxonomy and geographical distribution of Pleurotaenium subcoronulatum (Zygnematophyceae, Desmidiales) Author Levanets, Anatoliy 0000-0002-6665-1290 Unit for Environmental Sciences and Management, North-West University, Potchefstroom 2520, South Africa 20868421@nwu.ac.za Author Vuuren, Sanet Janse Van 0000-0001-5361-9905 Unit for Environmental Sciences and Management, North-West University, Potchefstroom 2520, South Africa sanet.jansevanvuuren@nwu.ac.za text Phytotaxa 2024 2024-06-25 655 2 144 158 http://dx.doi.org/10.11646/phytotaxa.655.2.3 journal article 301661 10.11646/phytotaxa.655.2.3 c1f66891-bd36-4e01-966a-67e0a44580c9 1179-3163 13212948

TABLE 1. A comparison of the dimensions of Pleurotaenium subcoronulatum and P. subcoronulatum f. majus found in the Okavango Delta with known dimensions from previous publications (- = no dimensions indicated; ° = Democratic Republic of the Congo).

Taxa	Location and citation	Dimensions (µm)
		Length	Width	Isthmus/*base	Apical end
P. subcoronulatum	Okavango Delta (current study)	150–163 (semicell)	20–32	15.8–26.8/*25.5–31.6	25.1–27.8
	Australia Ling & Tyler (1986, 2000) Dingley (2001)	184–354 (semicell) 778–794.8	20–58 42.5–45.7	17–50 35.2–40.8	21–56 -
	°DRC Van Oye (1953)	425–485	32–40	-	-
	Golama Swana Kaketa (1996)	320–870	22–42	*24–58	24
	India Turner (1893)	340–400	-	*28–32	24–28
	Indonesia Scott & Prescott (1961)	676–822	-	45–56/*51–61	48–55
	Madagascar West & West (1895)	407–453	-	*29–37	25–29
	Myanmar (Burma) Skuja (1949)	263–430	28–35	-	28–35
	Nepal Bando et al. (1989)	430	40	-	35
	Nigeria Opute (2000)	366	36	-	-
	North America Prescott et al. (1975)	240–690	26–45	-	22–44
	South Africa Williamson (1994)	343–714	76–105	-	27–50
	Thailand Hirano (1992)	268–668	33–40	-	-
	Zimbabwe Rich (1935)	240–500	-	*28–32	-
P. subcoronulatum f. majus	Okavango Delta (current study)	208–289	46–56	50/*56.7–60.3	46.1–53.2
	Zimbabwe Rich (1935)	-	-	*55	-