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Nitellopsis
Classification
Phylum:
Charophyta
Class:
Charophyceae
Order:
Charales
Superfamily:
Unknown
Family:
Characeae
Formal Genus Name and Reference:
Nitellopsis HY, 1889, p. 398
Type Species:
Chara obtusa Desvaux in LOISELEUR-DESLONGCHAMPS, 1810, p. 136, OD
Images
(Click to enlarge in a new window)
Synonyms
Tectochara, Qinghaichara
Geographic Distribution
Worldwide
Age Range
Beginning Stage in Treatise Usage:
Paleogene (Paleocene)
Beginning International Stage:
Danian
Fraction Up In Beginning Stage:
0
Beginning Date:
66.04
Ending Stage in Treatise Usage:
Holocene
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
0
Ending Date:
0
Description
Apex nitellopsidoid, spirals with distinct periapical narrowing and thinning, with ends thickening and expanding, forming prominent central rosette, general shape prolate-spheroidal to subprolate and subovoidal, spirals smooth or with tubercles, basal pore flaring, pentagonal, or star shaped, basal plate very thin, not visible from the exterior, size medium to large. [KRASSAVINA (1971) established the identity of the extant Nitellopsis obtusa and of the Quaternary Tectochara diluviana. GRAMBAST and SOULIÉ-MÄRSCHE (1972) detailed the past history of Nitellopsis and established three subgenera, Nitellopsis, Tectochara, and Campaniella. FEISTCASTEL (1977c) added a fourth subgenus, Microstomella.]
References
Hy, Félix C. 1889. Sur les modes de ramification et de cortication dans la famille des Characées et les caractères qu'ils peuvent fournir à la classification. Bulletin de la Société botanique de France 36:393398.
Museum or Author Information
Classification
Phylum:
Charophyta
Class:
Charophyceae
Order:
Charales
Superfamily:
Unknown
Family:
Characeae
Formal Genus Name and Reference:
Nitellopsis HY, 1889, p. 398
Type Species:
Chara obtusa Desvaux in LOISELEUR-DESLONGCHAMPS, 1810, p. 136, OD
Images
(Click to enlarge in a new window)Synonyms
Tectochara, Qinghaichara
Geographic Distribution
Worldwide
Age Range
Beginning Stage in Treatise Usage:
Paleogene (Paleocene)
Beginning International Stage:
Danian
Fraction Up In Beginning Stage:
0
Beginning Date:
66.04
Ending Stage in Treatise Usage:
Holocene
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
0
Ending Date:
0
Description
Apex nitellopsidoid, spirals with distinct periapical narrowing and thinning, with ends thickening and expanding, forming prominent central rosette, general shape prolate-spheroidal to subprolate and subovoidal, spirals smooth or with tubercles, basal pore flaring, pentagonal, or star shaped, basal plate very thin, not visible from the exterior, size medium to large. [KRASSAVINA (1971) established the identity of the extant Nitellopsis obtusa and of the Quaternary Tectochara diluviana. GRAMBAST and SOULIÉ-MÄRSCHE (1972) detailed the past history of Nitellopsis and established three subgenera, Nitellopsis, Tectochara, and Campaniella. FEISTCASTEL (1977c) added a fourth subgenus, Microstomella.]
References
Hy, Félix C. 1889. Sur les modes de ramification et de cortication dans la famille des Characées et les caractères qu'ils peuvent fournir à la classification. Bulletin de la Société botanique de France 36:393398.