Distribution of Cladophora Species (Cladophorales, Chlorophyta) along the Brazilian Coast Author Gestinari, Lísia Mônica De Souza Núcleo em Ecologia e Desenvolvimento Socioambiental de Macaé (NUPEM) - Universidade Federal do Rio de Janeiro, Campus Macaé - Caixa Postal 119331, CEP 27910 - 550, Macaé, Rio de Janeiro. Author Pereira, Sonia Maria Barreto Programa de Pós-Graduação em Botânica do Departamento de Biologia, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros, s / n - Dois Irmãos, CEP 52171 - 900, Recife, Pernambuco. Author Yoneshigue-Valentin, Yocie Departamento de Botânica, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rua Professor Rodolpho P. Rocco, s / n - Ilha do Fundão, CEP 21949 - 900, Rio de Janeiro. text Phytotaxa 2010 2010-12-24 14 22 42 http://biotaxa.org/Phytotaxa/article/view/phytotaxa.14.1.2 journal article 6064 10.11646/phytotaxa.14.1.2 32f83a63-c4f4-48af-bcbc-f0b930e4c173 1179-3163 4778724 Artificial key to species of Cladophora from the Brazilian coast 1 Thallus attached by rhizoids with annular constriction ............................................................................... C. prolifera - Thallus attached by rhizoids without annular constriction ........................................................................................... 2 2 Attachment by rhizoids sprouting from basal cells and sprouting along the thallus .................................................... 3 - Attachment by rhizoids sprouting only from basal cells .............................................................................................. 4 3 Unicellular rhizoids originating from basal cells and sprouting from the proximal extremity of the cells when present along the main axis .................................................................................................................................... C. coelothrix - Basal or hapteroidal rhizoids formed on the extremities of apical cells; unilateral ramification, with branches laterally inserted and separated by a cross wall; apical cells measuring (195–) 229.3 (–274) µm width, L/W (6–) 11 (–17) ...................................................................................................................................................................... C. catenata 4 Thallus with abundant ramification, in only one plane, with opposite branches more or less equally developed; conical apical cells with tapered tip ..................................................................................................................... C. ordinata - Ramification in more than one plane............................................................................................................................ 5 5 Thallus stiff, sparsely branched, irregularly organized: apical cells with rounded tip ................................ C. rupestris - Thallus flaccid to slightly stiff, with acropetally organized branch systems, grass green to dark, abundant ramification .............................................................................................................................................................................. 6 6 Thallus up to 4.5 cm high, diameter of apical cells less than 50 µm ........................................................................... 7 - Thallus up to 13 cm high; diameter of apical cells more than 50 µm ....................................................... C. vagabunda 7 Long apical cells, with slightly rounded tips, with (28–) 36 (–42) µm wide, L/W (5–) 8 (–12) ............... C. brasiliana - Apical cells shorter ....................................................................................................................................................... 8 8 Thallus grass green, falcate to refract-falcate branch system; apical cells (30 – ) 38 ( – 47) µm wide, L/W (3 – ) 5 ( – 7) .. ................................................................................................................................................................... C. dalmatica - Thallus dark green, straight branches; apical cells with (24–) 30 (–35) µm wide, L/W (2–) 3 (–4) .... C. montagneana