Cylindrospermopsis philippinensis (W.R.Taylor) Komárek (1984: 29)

Li, Xiao-Chuang, Huo, Shou-Liang, Cai, Fang-Fang, Yang, Yi-Ming, Xi, Bei-Dou & Li, Ren-Hui, 2017, The taxonomy and phylogeny of the genus Cylindrospermopsis (Cyanobacterium) evaluated by adding five new records from China, Phytotaxa 316 (3), pp. 224-238 : 228

Cylindrospermopsis philippinensis (W.R.Taylor) Komárek (1984: 29)

Basionym: Anabaenopsis philippinensis W.R.Taylor (1932: 462, pl. XL, figs. 1–7)

Strains:— CHAB 5180 and CHAB 5182 from Lake Dongqian in Ningbo City, Zhejiang Province.

Habitat:— In reservoirs and lakes, planktonic.

Description:— Trichomes solitary, free floating, intensely spirally to screw-like coiled, slightly and shortly tapering towards ends, not or slightly constricted at the cross-walls ( Fig. 1H–L ). Cells cylindrical, slightly attenuated towards the ends, 5.2–9.7–22.5 μm long, 2.1–3.1–4.0 μm wide (L:W ratio 1.4–3.2–6.7), apical cells shortly narrowed and pointed-rounded. Heterocytes drop-like to conical pointed-rounded at the end, elongated and usually curved, 5.4– 7.9–12.4 μm long, 2.2–3.4–5.2 μm wide (L:W ratio 1.5–2.4–3.9). Akinetes cylindrical, rounded at the ends, sometimes curved, 6.1–11.4–20.7 μm long, 3.1–4.6–6.3 μm wide (L:W ratio 1.5–2.6–5.4) ( Table S4).

Notes:— C. philippinensis was diagnosed as its intensely spiraled to screw-like coiled trichomes, apical cells shortly narrowed and pointed rounded at the ends, and heterocytes drop-like to conical with pointed-rounded ends.

Figures

FIGURE 1. General morphological aspects of five Cylindrospermopsis new records species from China. A–C. C. taverae CHAB 143. D–G. C. helicoidea CHAB 357. H–K. C. philippinensis CHAB 5180. L. C. philippinensis CHAB 5182. M. C. catemaco CHAB 148. N–O. C. catemaco CHAB 151. P. C. catemaco CHAB 155. Q. C. catemaco CHAB 220. R. C. africana CHAB 359. S. C. africana CHAB 485. T–V. C. africana CHAB 1394. Scale bars = 10 μm. Note: C. = Cylindrospermopsis.