Bambusina borreri (Ralfs) Cleve var. brasiliensis (Förster) Bourrelly & Couté

Araújo, Camila Barbosa de, Bicudo, Carlos Eduardo de Mattos, Takiyama, Luís Roberto & Melo, Sérgio de, 2020, Pseudofilamentous desmids (Zygnematophyceae) from an Amazonian floodplain lake (Macapá, AP, Brazil), Iheringia, Série Botânica (e 2020010) 75, pp. 1-14 : 4

Bambusina borreri (Ralfs) Cleve var. brasiliensis (Förster) Bourrelly & Couté , Amazoniana 7(3): 258, pl.26, fig. 8. 1982.

Bambusina brebissonii Kützing var. brasiliensis Förster , Amazoniana 2(1-2):101, pl. 53, fig. 22. 1969.

( Fig. 4 )

Cell 2-3 times greater in length than width, 37-81 × 15-20 μm, 8-13 μm broad at the apex and 12-19 μm broad at the isthmus. Semicells pyramidal-truncated; delicate and longitudinal striation in the apical region; parallel lateral margins that were slightly concave near the base; shallow median constriction; hyaline cell wall; axial chloroplast.

Material examined: BRAZIL, AMAPÁ, Macapá, Curralinho Lake , 02.VI.2007, C.B. Araújo (SP469217), 03.VII.2007, C.B. Araújo (SP469218), 12.II.2008, C.B. Araújo (SP469224), 26.III.2008, C.B. Araújo (SP469225), 15.IV.2008, C.B. Araújo (SP469226), 15.VII.2008, C.B. Araújo (SP469228) .

Comments: Förster (1969) originally described this species as B. brebissonii var. brasiliensis Förster based on material collected in the Jurucuí Lake in the municipality of Santarém, state of Pará. Bourrely & Couté (1982) reclassified this variety as B. borreri under the new combination B. borreri var. brasiliensis Bourrely & Couté , based on material collected in the French Guiana.

Distribution in Brazil: Pará state (Förster 1969).

Figures

Figs. 3-15. Pseudofilamentous desmids of Curralinho Lake, Macapá, Amapá, Brazil. 3 A-C. Bambusina borreri. A, B. detailed cells; C. detailed pseudofilament; 4. B. borreri var. brasiliensis; 5 A-B. B. borreri var. majus, detailed cells and pseudofilaments; 6. Desmidium baileyi var. baileyi f. bailey; 7 A-B. D. elegans. A. detailed pseudofilament, B. detailed cell; 8 A-B. D. graciliceps var. graciliceps. A. frontal view of the pseudofilament, B. slight modification of the pseudofilament frontal view; 9. D. graciliceps var. groenbladii; 10 A-C. D. longatum. A. pseudofilament frontal view, B. formation of the elongate conjugation tube, C. zygospore; 11 A-B. D. quadratum var. quadratum. A. detailed pseudofilament, B. detailed cells; 12. D. quadratum var. constrictum; 13 A-B. Groenbladia neglecta var. neglecta. A. detailed pseudofilament, B. detailed cells; 14 A-B. G. neglecta var. elongata. A. detailed pseudofilament, B. detailed cells; 15. Haplozyga armata var. armata. Scale bars = 10 µm.