Gracilaria Greville 1830

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 : 4-6

publication ID

https://doi.org/ 10.11646/phytotaxa.374.1.1

persistent identifier

https://treatment.plazi.org/id/347F87A1-FFAC-FFC0-FF72-F950FA9F0E3A

treatment provided by

Felipe

scientific name

Gracilaria Greville 1830
status

 

Gracilaria Greville 1830 View in CoL :iiv, 121

GENERITYPE: Gracilaria bursa-pastoris (S.G. Gmelin) P.C. Silva (1952: 265)

BASIONYM: Fucus bursa-pastoris S.G. Gmelin 1768: 121 . Note: the conserved generitype is Gracilaria compressa (C. Agardh) Greville (1830: 121) ; basionym: Sphaerococcus compressus C. Agardh (1822: 308) , but see Steentoft et al. (1991: 633), Silva (1994: 263), and Silva et al. (1996: 917).

PERTINENT SYNONYMS: Congracilaria Yamamoto View in CoL , Gracilariophila Setchell et H.L.Wilson View in CoL (in part), Gracilariocolax View in CoL Weber-van Bosse.

TYPE LOCALITY: Cádiz, Iberian Peninsula, southwestern Spain.

DIAGNOSIS: Tetrasporangia superficial, in both unmodified cortex or in sori. Spermatangial conceptacles of the shallow cortical type only (i.e., textorii - type or the verrucosa - type sensu Yamamoto 1975, 1978, 1984). Gonimoblast filaments consisting of vacuolated cells in center towards the base, becoming elongated and highly branched towards the outside and bearing carposporangia in branched chains, the carposporangia cut off by oblique division with the carpospores terminal, maturing basipetally; tubular nutritive cells numerous, variable in diameter, connecting to outer pericarp, initially fusing with single pericarp cell that may fuse progressively with neighboring pericarp cells, extending the length of the tubular nutritive cells to form a tube-shaped pericarp fusion cell that sometimes leaves behind remnant pit connections; carpogonial fusion cell with numerous enlarged nuclei, extending moderately through fusion with adjoining inner pericarp cell, becoming embedded longitudinally in the inner pericarp; cystocarp cavity formed schizogenously as the gonimoblasts grow by the dissolution of pit connections between inner and outer gonimoblast filaments; inner pericarp composed of straight cell rows, five to seven cells long, in which each cell contains an enlarged nucleus; fusion cell persisting or disintegrating at the mature stages of cystocarp development.

Kingdom

Plantae

Phylum

Rhodophyta

Class

Florideophyceae

Order

Gigartinales

Family

Gracilariaceae

Loc

Gracilaria Greville 1830

Gurgel, Carlos Frederico D., Norris, James N., Schmidt, William E., Le, Hau Nhu & Fredericq, Suzanne 2018
2018
Loc

Congracilaria

Yamamoto 1986
1986
Loc

Gracilariocolax

Weber-van Bosse 1928
1928
Loc

Gracilaria compressa (C. Agardh)

Greville 1830: 121
1830
Loc

Sphaerococcus compressus

C. Agardh 1822: 308
1822
Loc

Fucus bursa-pastoris S.G. Gmelin 1768: 121

S. G. Gmelin 1768: 121
1768
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