Biodiversity Literature Repository
Published September 12, 2014 | Version v1
Taxonomic treatment Open

Chroococcus subviolaceus

Creators

  • 1. Institute of Botany, Núcleo de Pesquisa em Ficologia, C. P. 3005, 1031 - 970 São Paulo, SP, Brazil & E-mail: watsonarantes @ gmail. com (corresponding author)
  • 2. Department of Biological Sciences, Smith College, Northampton, MA 01063, USA & Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013, USA
  • 3. Institute of Botany, Núcleo de Pesquisa em Ficologia, C. P. 3005, 1031 - 970 São Paulo, SP, Brazil

Description

Chroococcus subviolaceus (Wille) Gama-Jr., Laughinghouse IV & Sant’Anna, comb. et stat. nov. (Figs. 4J–4L).

Basionym: Chroococcus turgidus var. subviolaceus Wille in Hedwigia 53: 144. 1913.

Elliptical to irregular colonies, 13.0–48.0 µm diam., 2–4–8–16 celled, rarely more. Sheath firm, hyaline, conspicuous, slightly or non-lamellate, smooth. Cells ellipsoid, hemispherical to polygonal, (6.1)7.2–10.4(17.1) µm diam. Cell content homogeneous to granulated, brown-purple to purple.

Habitat: —Rocks near a waterfall and concrete.

Notes: — Chroococcus turgidus var. subviolaceus Wille (1913: 144) was first found growing on rocks, among Plectonema and Tolypothrix trichomes, in Samoa (Wille 1914). The features differing this variety from C. turgidus (Kützing 1846: 5) Nägeli (1849: 46) are the purple cell content, epiphytic habitat, non-lamellate sheath, and the smaller cell diameter. These characteristics are sufficient to classify Chroococcus turgidus var. subviolaceus as a separate species from C. turgidus. According to the Atlantic Rainforest material, we suspect that C. subviolaceus is very common in tropical terrestrial habitats of humid forests. Komárek & Anagnostidis (1998) considered this variety a synonym of Chroococcus westii Boye-Petersen (1923: 263). However, this species was first described in small Iceland lakes, and besides the habitat, Boye-Petersen (1923) mentioned that C. westii is quite different from C. turgidus var. subviolaceus by its larger cell diameter and by the sheaths being distinctly lamellate. We are not in agreement with the proposal by Komárek & Anagnostidis (1998) and propose the new status of this variety.

Studied material: — BRAZIL. São Paulo: Peruíbe, Ecological Station “Juréia-Itatins”, 24° 23.737’ S, 47° 0.699’ W, 16 August 2011, W.A. Gama-Jr., G.S. Hentschke, C.F.S. Malone & C.L. Sant’Anna (SP 427320); 24° 22.694’ S, 47° 4.793’ W, 16 August 2011, W.A. Gama-Jr., G.S. Hentschke, C.F.S. Malone & C.L. Sant’Anna (SP 427321); 24° 22.685’ S, 47° 4.797’ W, 16 August 2011, W.A. Gama-Jr., G.S. Hentschke, C.F.S. Malone & C.L. Sant’Anna (SP 427322); 24° 23.013’ S, 47° 4.836’ W, 17 August 2011, W.A. Gama-Jr., G.S. Hentschke, C.F.S. Malone & C.L. Sant’Anna (SP 427324); 24° 23.708’ S, 47° 7.324’ W, 17 August 2011, W.A. Gama-Jr., G.S. Hentschke, C.F.S. Malone & C.L. Sant’Anna (SP 427330); 24° 22.739’ S, 47° 4.719’ W, W.A. Gama-Jr., G.S. Hentschke, C.F.S. Malone & C.L. Sant’Anna (SP 427333).

Notes

Published as part of Jr, Watson Arantes Gama, Iv, Haywood Dail Laughinghouse & Sant'Anna, Célia Leite, 2014, How diverse are coccoid cyanobacteria? A case study of terrestrial habitats from the Atlantic Rainforest (São Paulo, Brazil), pp. 61-97 in Phytotaxa 178 (2) on pages 69-70, DOI: 10.11646/phytotaxa.178.2.1, http://zenodo.org/record/5145178

Files

Files (3.2 kB)

Name Size Download all
md5:c3b7d60ed04ba02cf0e7ff332b4be675
3.2 kB Download

System files (22.9 kB)

Name Size Download all
md5:2048c91be65176ae216699ec0c5b3375
22.9 kB Download

Linked records

Additional details

Identifiers

URL
http://treatment.plazi.org/id/03F08786540FE526FF3DF9ABFE3CFD59

Related works

Cites
Figure: 10.5281/zenodo.5145186 (DOI)
Is part of
Journal article: 10.11646/phytotaxa.178.2.1 (DOI)
Journal article: http://zenodo.org/record/5145178 (URL)
Journal article: http://publication.plazi.org/id/FFC9FFFE5407E52FFFB5FFDBFFA5FFD5 (URL)
Is source of
https://sibils.text-analytics.ch/search/collections/plazi/03F08786540FE526FF3DF9ABFE3CFD59 (URL)

Biodiversity

Event date
2011-08-16 , 2011-08-17
Family
Chroococcaceae
Genus
Chroococcus
Kingdom
Bacteria
Order
Chroococcales
Phylum
Cyanobacteria
Scientific name authorship
Wille
Species
subviolaceus
Taxon rank
species
Verbatim event date
2011-08-16 , 2011-08-17

References

  • Wille, N. (1913) Neue Susswasseralgen von den Samoa-Inseln. Hedwigia 53: 144 - 147.
  • Wille, N. (1914) Susswasseralgen von den Samoainseln, Hawaii, den Salomonsinseln und Ceylon, gesammelt von Dr. K. Rechinger. Denkschriften der Kaiserlichen Akademie der Wissenschaften. Mathematisch-naturwissenschaftliche Klasse 91: 141 - 162.
  • Kutzing, F. T. (1846) Tabulae phycologicae. Vol 1: 2. Nordhausen, 64 pp. http: // dx. doi. org / 10.5962 / bhl. title. 4971
  • Nageli, C. (1849) Gattungen einzelliger Algen, physiologisch und systematisch bearbeitet. Neue Denkschriften der Allg. Schweizerischen Gesellschaft fur die Gesammten Naturwissenschaften 10 (7): 1 - 139. http: // dx. doi. org / 10.5962 / bhl. title. 6805
  • Komarek, J. & Anagnostidis, K. (1998) Cyanoprokaryota 1. Teil: Chroococcales. In: Ettl, H., Gartner, G., Heynig, H. & Mollenhauer D. (Eds.) Susswasserflora von Mitteleuropa 19 / 1. Fischer, Jena, 548 pp.
  • Boye-Petersen, J. (1923) The freshwater Cyanophyceae of Iceland. Arbejder fra den Botaniske have i KObenhavn 101 (7): 251 - 324.