Tolypothrix carrinoi Miscoe, Pietrasiak and J.R. Johansen, 2016

Kim, So-Won, Lee, Nam-Ju, Kim, Do-Hyun, Song, Ji-Ho & Lee, Hye-Ryeung Wang and Ok-Min, 2022, Five newly recorded species of cyanobacteria in Korea, Journal of Species Research 11 (4), pp. 296-309 : 302

Tolypothrix carrinoi Miscoe, Pietrasiak and J.R. Johansen, 2016 ( Fig. 3 , Table 2)

Filaments straight, heteropolar, with rare single and double false branching. Trichomes slightly to distinctly constricted at the cross-walls. Sheaths thin, colorless, clearly visible when cells are absent. Cells blue-green in color, compressed disc-like to shorter than wide when rapidly dividing, becoming barrel-shaped to cylindrical and longer than wide in old cultures, with finely granular, 11.1-13.3 μm wide, 4.1-12.8 μm long. Apical cells hemispherically rounded. Heterocytes spherical, located in filaments basal, one to three in a series, 11.2-14.0 μm wide, 9.6-12.5 μm long.

Ecology. Dry wall exposed to sunlight in the sinkhole of a cave ( Miscoe et al., 2016), on tree bark in Korea. Distribution. Hawaii ( Miscoe et al., 2016).

Site collection. Iui-dong, Yeongtong-gu, Suwon-si , Gyeonggi-do (37°18′17.9″N / 127°02′05.3″E) .

Date of collection. February 14, 2019.

Order Synechococcales Hoffmann, Komárek and Kastovsky, 2005

Family Leptolyngbyaceae Komárek, J. Kastovsky, Mareš and J.R. Johansen, 2014

Genus Myxacorys Pietrasiak and J.R. Johansen, 2019

Filaments wavy, olive green in color, often form false branching. Trichomes straight, sometimes twisted, slightly constricted at the cross-walls. Sheaths colorless, thin. In young cultures, filaments with single trichome without sheaths, and later with one to two trichomes in a sheath. Cells shorter than wide to isodiametric, occasionally longer than wide when stressed. Apical cells rounded to conical, sometimes forming irregularly shaped involution cells. Hormogonia widened at one end, tapering toward the opposite end. Slime caps lack in young cultures, and present in old cultures. Calyptra absent.

Figures

Fig. 3. Microphotographs of Tolypothrix carrinoi from the strains FBCC-A206, FBCC-A207, and FBCC-A208. (A-D) False branching, (E, F) Heterocytes (h), (G, H) Morphologies of trichomes, (I) Morphology of sheath. Scale bars=10μm.