Diversity and conservation of Pottiaceae (Pottiales) in the Atlantic Rainforest

The taxonomy, diversity and conservation status of all species of the family Pottiaceae in the Atlantic Rainforest of Rio de Janeiro State in southeastern Brazil are presented. The Atlantic Rainforest is a globally recognized biodiversity hotspot. The treatments are based on field expeditions and studies of herbarium collections. Twenty eight species from 18 genera are discussed. A key to the genera and species is provided, with comments on their distributions and altitudinal ranges, with illustrations and evaluation of the conservation status.

Keywords:
Brazil; conservation status; phytogeography; Pottiaceae; taxonomy

Authorship

Denise Pinheiro da Costa

Jardim Botanico do Rio de Janeiro, Pacheco Leão, 915, 22460-030, Rio de Janeiro, RJ, Brazil, dcosta@jbrj.gov.brJardim Botânico do Rio de JaneiroBrazilRio de Janeiro, RJ, BrazilJardim Botanico do Rio de Janeiro, Pacheco Leão, 915, 22460-030, Rio de Janeiro, RJ, Brazil, dcosta@jbrj.gov.br

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Figures

Figures (7)

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Figure 1
A-C. Anoectangium aestivum. A. Leaf. B. Leaf section. C. Leaf apex (Vital & Buck 12427, NY). D-H. Barbula arcuata. D. Habit. E. Leaf. F. Leaf apex. G. Marginal cells. H. Leaf section (Schäfer-Verwimp 9867, RB). I-M. Barbula indica. I. Leaves. J. Leaf apex. K. Basal cells. L. Leaf section (Costa & Molinaro 241, RB).

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Figure 2
A-D. Chenia leptophylla. A. Habit. B. Leaf. C. Leaf apex. D. Leaf section (Schäfer-Verwimp & Verwimp 10241, RB). E-I. Dolotortula mniifolia. E. Habit. F. Leaf. G. Leaf apex. H. Leaf section. I. Laminal cells (Vital s.n., SP). J-N. Ganguleea angulosa. J. Habit. K. Leaf. L. Leaf apex. M. Marginal cells. N. Leaf section. O-S (Costa 250, RB). Hymenostylium recurvirostrum. O. Habit. P. Leaf. Q. Leaf apex. R. Papillae. S. Leaf section (Costa et al. 4953, RB).

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Figure 3
A-E. Hyophila involuta. A. Habit. B. Leaves. C. Leaf apex. D. Marginal cells. E. Leaf section (Molinaro & Costa 83, RB). F-J. Hyophiladelphus agrarius. F. Habit. G. Leaves. H. Basal cells. I. Laminal cells. J. Leaf section (Costa & Yano 1592, RB). K-O. Leptodontium araucarieti. K. Leaf. L. Leaf apex. M. Marginal cells. N. Basal cells. O. Leaf section (Costa et al. 1007, RB). P-T.Leptodontium filicola. P. Leaf. Q. Basal cells. R. Marginal cells. S. Laminal cells. T. Leaf section. U. Propagula (Costa et al. 4283, RB).

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Figure 4
A-E. Leptodontium flexifolium. A. Leaves. B. Leaf apex. C. Marginal cells. D. Papillae. E. Leaf section (Schäfer-Verwimp & Verwimp 14659, RB). F-J. Leptodontium luteum. F. Leaf. G. Leaf apex. H. Marginal cells. I. Laminal cells J. Leaf section (Costa et al. 4957, RB)K-N. Leptodontium stellatifolium. K. Leaf. L. Marginal cells. M. Basal cells. N. Leaf section (Ribeiro & Medina 147, RB). O-R. Leptodontium viticulosoides. O. Leaves. P. Marginal cells. Q. Basal cells. R. Leaf section (Costa 1066, RB).

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Figure 5
A-C. Leptodontium wallisii. A. Leaf. B. Leaf section. C. Marginal cells (Costa et al. 4972, RB). D-G. Plaubelia sprengelii. D. Leaves. E. Leaf apex. F. Basal cells. G. Leaf section (Costa et al. 2215, RB). H-L. Pleurochaete squarrosa var. luteola. H. Leaf. I. Leaf apex. J. Papillae. K. Marginal basal cells. L. Leaf section (Costa et al. 2215, RB). M-P. Pseudosymblepharis schimperiana. M. Leaf. N. Leaf apex. O. Basal cells. P. Leaf section (Costa et al. 2116, RB).

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Figure 6
A-D. Streptopogon brasiliensis A. Habit. B. Leaf. C. Leaf apex. D. Leaf section (Schäfer-Verwimp 11950, isotype SV). E-G. Streptopogon calymperes. E. Leaves. F. Leaf apex. G. Leaf section (Vital & Buck 19640, NY). H-L. Syntrichia amphidiacea. H. Leaves. I. Leaf apex. J. Leaf section (Schäfer-Verwimp & Verwimp 10240, SV). K-L. Syntrichia fragilis. K. Leaf. L. Leaf section (Schäfer-Verwimp & Verwimp 15140, RB).

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Figure 7
A-E. Tortella humilis. A. Habit. B. Leaf. C. Leaf apex D. Basal cells. E. Leaf section (Costa et al. 2184, RB). F-H. Tortula muralis. F. Leaf apex. G. Papillae. H. Leaf section (Schäfer-Verwimp & Verwimp 10566, RB). I-L. Trichostomum weisioides. I. Leaf. J. Leaf apex. K. Papillae. L. Leaf section (Ule 1814, holotype R). M-P. Weissia breutelii. M. Leaves. N Leaf apex. O. Leaf section (Schäfer-Verwimp & Verwimp 8711, RB). P-T. Weissia jamaicensis. P. Leaf. Q. Leaf apex. R. Marginal cells. S. Basal cells. T. Leaf section (Schäfer-Verwimp & Verwimp 8441, RB).

Figure 1 A-C. Anoectangium aestivum. A. Leaf. B. Leaf section. C. Leaf apex (Vital & Buck 12427, NY). D-H. Barbula arcuata. D. Habit. E. Leaf. F. Leaf apex. G. Marginal cells. H. Leaf section (Schäfer-Verwimp 9867, RB). I-M. Barbula indica. I. Leaves. J. Leaf apex. K. Basal cells. L. Leaf section (Costa & Molinaro 241, RB).

Figure 2 A-D. Chenia leptophylla. A. Habit. B. Leaf. C. Leaf apex. D. Leaf section (Schäfer-Verwimp & Verwimp 10241, RB). E-I. Dolotortula mniifolia. E. Habit. F. Leaf. G. Leaf apex. H. Leaf section. I. Laminal cells (Vital s.n., SP). J-N. Ganguleea angulosa. J. Habit. K. Leaf. L. Leaf apex. M. Marginal cells. N. Leaf section. O-S (Costa 250, RB). Hymenostylium recurvirostrum. O. Habit. P. Leaf. Q. Leaf apex. R. Papillae. S. Leaf section (Costa et al. 4953, RB).

Figure 3 A-E. Hyophila involuta. A. Habit. B. Leaves. C. Leaf apex. D. Marginal cells. E. Leaf section (Molinaro & Costa 83, RB). F-J. Hyophiladelphus agrarius. F. Habit. G. Leaves. H. Basal cells. I. Laminal cells. J. Leaf section (Costa & Yano 1592, RB). K-O. Leptodontium araucarieti. K. Leaf. L. Leaf apex. M. Marginal cells. N. Basal cells. O. Leaf section (Costa et al. 1007, RB). P-T.Leptodontium filicola. P. Leaf. Q. Basal cells. R. Marginal cells. S. Laminal cells. T. Leaf section. U. Propagula (Costa et al. 4283, RB).

Figure 4 A-E. Leptodontium flexifolium. A. Leaves. B. Leaf apex. C. Marginal cells. D. Papillae. E. Leaf section (Schäfer-Verwimp & Verwimp 14659, RB). F-J. Leptodontium luteum. F. Leaf. G. Leaf apex. H. Marginal cells. I. Laminal cells J. Leaf section (Costa et al. 4957, RB)K-N. Leptodontium stellatifolium. K. Leaf. L. Marginal cells. M. Basal cells. N. Leaf section (Ribeiro & Medina 147, RB). O-R. Leptodontium viticulosoides. O. Leaves. P. Marginal cells. Q. Basal cells. R. Leaf section (Costa 1066, RB).

Figure 5 A-C. Leptodontium wallisii. A. Leaf. B. Leaf section. C. Marginal cells (Costa et al. 4972, RB). D-G. Plaubelia sprengelii. D. Leaves. E. Leaf apex. F. Basal cells. G. Leaf section (Costa et al. 2215, RB). H-L. Pleurochaete squarrosa var. luteola. H. Leaf. I. Leaf apex. J. Papillae. K. Marginal basal cells. L. Leaf section (Costa et al. 2215, RB). M-P. Pseudosymblepharis schimperiana. M. Leaf. N. Leaf apex. O. Basal cells. P. Leaf section (Costa et al. 2116, RB).

Figure 6 A-D. Streptopogon brasiliensis A. Habit. B. Leaf. C. Leaf apex. D. Leaf section (Schäfer-Verwimp 11950, isotype SV). E-G. Streptopogon calymperes. E. Leaves. F. Leaf apex. G. Leaf section (Vital & Buck 19640, NY). H-L. Syntrichia amphidiacea. H. Leaves. I. Leaf apex. J. Leaf section (Schäfer-Verwimp & Verwimp 10240, SV). K-L. Syntrichia fragilis. K. Leaf. L. Leaf section (Schäfer-Verwimp & Verwimp 15140, RB).

Figure 7 A-E. Tortella humilis. A. Habit. B. Leaf. C. Leaf apex D. Basal cells. E. Leaf section (Costa et al. 2184, RB). F-H. Tortula muralis. F. Leaf apex. G. Papillae. H. Leaf section (Schäfer-Verwimp & Verwimp 10566, RB). I-L. Trichostomum weisioides. I. Leaf. J. Leaf apex. K. Papillae. L. Leaf section (Ule 1814, holotype R). M-P. Weissia breutelii. M. Leaves. N Leaf apex. O. Leaf section (Schäfer-Verwimp & Verwimp 8711, RB). P-T. Weissia jamaicensis. P. Leaf. Q. Leaf apex. R. Marginal cells. S. Basal cells. T. Leaf section (Schäfer-Verwimp & Verwimp 8441, RB).

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E-mail: acta@botanica.org.br

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Diversity and conservation of Pottiaceae (Pottiales) in the Atlantic Rainforest

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