Crassa Gurgel, J.N. Norris et Fredericq, 2018

Gurgel, Carlos Frederico D., Norris, James N., Schmidt, William E., Le, Hau Nhu & Fredericq, Suzanne, 2018, Systematics of the Gracilariales (Rhodophyta) including new subfamilies, tribes, subgenera, and two new genera, Agarophyton gen. nov. and Crassa gen. nov., Phytotaxa 374 (1), pp. 1-23 : 10

publication ID	https://doi.org/ 10.11646/phytotaxa.374.1.1
persistent identifier	https://treatment.plazi.org/id/347F87A1-FFA6-FFCC-FF72-FC6DFA8C03BA
treatment provided by	Felipe
scientific name	Crassa Gurgel, J.N. Norris et Fredericq
status	gen. nov.

Treatment

Crassa Gurgel, J.N. Norris et Fredericq View in CoL , gen. nov.

TYPE SPECIES: Crassa cornea (J.Agardh) Gurgel, J.N.Norris et Fredericq

BASIONYM: Gracilaria cornea J. Agardh 1852: 598

TYPE LOCALITY: Pernambuco (?), Brazil.

LECTOTYPE: LD #29370 (ex herb. J. E. Areschoug), fig. 8 (male), Herb. Agardh, (left-hand side) ( Bird et al. 1986: 2049).

PERTINENT SYNOMYMS: Ceramianthemum corneum (J.Agardh) Kuntze 1891 ; Hydropuntia cornea (J.Agardh) M.J. Wynne 1989 .

DIAGNOSIS: Gonimoblast mass (placenta) spherical, sharp transition between gonimoblast and upper short usually dichotomously branched chains of carposporangia. Cystocarp floor flat and well defined; gametophytic fusion cells dendritic. Spermatangia of the medullary type only, forming deep conceptacles which are often confluent, giving rise to multiple cavities in the medulla when seen in transverse sections.

PERTINENT SPECIES IN CRASSA : Crassa cornea (J. Agardh) Gurgel, J.N. Norris et Fredericq ;