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76 results for “Hymenophyllaceae”
FIGURE 2 in Discussion on the taxonomy of African fern Abrodictyum rigidum (Sw.) Ebihara & Dubuisson and description of two new Abrodictyum C.Presl species (Hymenophyllaceae, Polypodiidae) for the Afro-Malagasy region
FIGURE 2. Proportional synthetic and schematic representations, at the same scale, of the frond gross morphology of the studied taxa and populations taking into account length and width mean values (see Table 2).
FIGURE 3 in Discussion on the taxonomy of African fern Abrodictyum rigidum (Sw.) Ebihara & Dubuisson and description of two new Abrodictyum C.Presl species (Hymenophyllaceae, Polypodiidae) for the Afro-Malagasy region
FIGURE 3. Multivariate analyses. PCA (above) and CDA (below) results for selected quantitative traits. The PCA shows the contribution of each trait to overall morphological variation; the CDA shows the distribution of the four taxa in morphological 2-D trait space.
FIGURE 2 in New species and records in the fern genus Didymoglossum for the flora of Seychelles, with notes on the Southeast Asian D. motleyi complex (Hymenophyllaceae)
FIGURE 2. Illustration of Didymoglossum beaverianum (Fouzer Kati). A. Micro-habitat, rupicolous in wet ravines; B. Mat, showing the inclined position of leaves, not appressed on the substrate; C. Tortuous rhizome irregularly branching; D. Shape of fertile and sterile leaves; E. Developing sori in shallow apical notches; F. Developing sorus (early stage); G. Developing sorus (intermediate stage); H. Winged margins of the sorus; I. Rhizome showing unicellular hairs.
FIGURE 1 in New species and records in the fern genus Didymoglossum for the flora of Seychelles, with notes on the Southeast Asian D. motleyi complex (Hymenophyllaceae)
FIGURE 1. Bayesian phylogeny inferred from rbcL sequences showing relationships in the genus Didymoglossum. Support values on nodes are posterior probabilities. The species/populations studied and compared here are shown in coloured boxes. D = subgenus Didymoglossum, M = subgenus Microgonium.
FIGURE 3 in New species and records in the fern genus Didymoglossum for the flora of Seychelles, with notes on the Southeast Asian D. motleyi complex (Hymenophyllaceae)
FIGURE 3. Illustration of the range of within specimen variability in the lamina shape and petiole length and pubescence in fertile leaves of the Seychellois population of Didymoglossum beccarianum (A, B, C) and D. beaverianum (D, E, F).
FIGURE 5 in New species and records in the fern genus Didymoglossum for the flora of Seychelles, with notes on the Southeast Asian D. motleyi complex (Hymenophyllaceae)
FIGURE 5. Illustration of Didymoglossum beccarianum (Pti fouzer ron). A. Micro-habitat, corticolous at the base of endemic palm Phoenicophorium borsigianum; B. Mat, showing leaves slightly appressed to the substrate; C. Rhizome showing regular branching; D. Shape of fertile and sterile leaves; E. Developing sorus in deep apical notch; F. Un-winged margins of the sorus; G. Leaf base showing unicellular hairs below the false veins.
FIGURE 2. Crepidomanes shenzhenense.—A. Habit.—B in Crepidomanes shenzhenense (subg. Crepidomanes; Hymenophyllaceae), a new filmy fern species from Guangdong, southern China
FIGURE 2. Crepidomanes shenzhenense.—A. Habit.—B. Portion of ultimate segment showing internal false veinlets and retused apex.— C. Internal false veinlets.—D. Hairs on the stipe.—E. Sorus with sporangia.—F. Sorus without sporangia. (Drown by Cui Ding-han based on holotype)
FIGURE 1. Crepidomanes shenzhenense.—A–B in Crepidomanes shenzhenense (subg. Crepidomanes; Hymenophyllaceae), a new filmy fern species from Guangdong, southern China
FIGURE 1. Crepidomanes shenzhenense.—A–B. Habits of the new species in situ.—C. Fronds with sori.—D–F. Sori from different individuals.—F. Internal false veinlets.—H. Portion of stipe showing hairs.
FIGURE 12. A in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 12. A. Didymoglossum barklyanum (Baker) J.P.Roux, as lithophyte (Mauritius, 'Vallée d'Osterlog'). B. D. lorencei (Tardieu) Ebihara & Dubuisson, as lithophyte (La Réunion, 'Grand Etang'). C. D. lorencei, detail of frond with marginal trichomes (photographs. A–C: J.-Y. Dubuisson; D: J.-M. Tamon).
FIGURE 15. A in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 15. A. Hymenophyllum capillare Desv., typical form, as epiphyte (La Réunion, 'Forêt de Bon Accueil, Les Makes'). B. H. capillare, typical form, detail of fronds. C. H. capillare f. nanum Hennequin & Dubuisson, f. nov., as epiphyte (La Réunion, 'Pitons Mare à Boue'). D. H. capillare f. nanum, habit, type individual, scale = 0.5 cm (La Réunion, 'Forêt de Bon Accueil, Les Makes', J.-Y. Dubuisson & L. Bauret HR 2016-10, P). E. H. digitatum (Sw.) Forsberg, as epiphyte (La Réunion, 'Forêt de Bon Accueil, Les Makes'). F. H. digitatum, detail of laminar margin showing minute dark trichomes. G. H. digitatum, detail of fronds and sori with tubular bases (s) (photographs. A–B: L. Bauret; C–G: J.-Y. Dubuisson).
FIGURE 9. A in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 9. A. Crepidomanes fallax (Christ) Ebihara & Dubuisson, as lithophyte on wet rock (La Réunion, 'Rivière des Marsouins'). B. C. fallax, habit (from Madagascar, F. Rakotondrainibe 6467, P00248564). C. C. frappieri (Cordem.) J.P.Roux, covering a rock in a wet ravine (La Réunion, 'Ravine Rivière Ste Anne'). D. C. frappieri, habit, type specimen (Bédier s.n., P00477825). E. C. frappieri, detail of long branched rhizome trichomes. F. C. frappieri, detail of sori (photographs. A, C & F: J.-M. Tamon).
FIGURE 18. A in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 18. A. Polyphlebium diaphanum (Kunth) Ebihara & Dubuisson, as epiphyte (La Réunion, 'Forêt de Bon Accueil, Les Makes'). B. P. diaphanum, detail of a frond and sori. C. Vandenboschia gigantea (Bory ex Willd.) Pic.Serm., climbing on a tree trunk (La Réunion, 'Mare Longue'). D. V. gigantea, terrestrial parts (La Réunion, 'Grand Etang'). E. V. gigantea, detail of a long-creeping climbing rhizome (photographs. A: L. Bauret; B–E: J.-Y. Dubuisson).
FIGURE 19 in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 19. Importance of gametophyte ecology and biology for the sporophyte settlement on distant islands according to Dassler & Farrar's (2001) hypothesis. The long-lived and colonial epiphytic gametophytes (above) would have the possibilities to realize fertilization many seasons/years (T) after the spore germination, whereas short-lived and non-colonial terrestrial gametophytes (below) would fail in realizing the fertilization if they are not close enough, and die at the end of the season (red crosses). Hence, the epiphytic taxa with longlived and colonial gametophytes would have a higher probability of establishment than terrestrial taxa. Hymenophyllaceae and the genus Ctenitis (Dryopteridaceae) illustrate such contrasts in the Mascarene archipelago, explaining the difference in the level of endemicity (see text for an in-depth discussion).
FIGURE 7 in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 7. Abrodictyum tamarisciforme (Jacq.) Ebihara & Dubuisson. A. A dense population of many individuals covering a trunk (La Réunion, 'Grand Etang'). B. Single individual as epiphytic on a tree-fern trunk, which is also covered here by Didymoglossum cuspidatum (La Réunion, 'Mare Longue'). C. Lithophytic individual, the little individual at the bottom right is A. parviflorum (Poir.) Bauret & Dubuisson (La Réunion, 'Grand Etang'). D. Detail of segments with typical distinct marginal row of cells (mc) (photographs. A, C: J.-Y. Dubuisson; B: C. Chaussidon; D: L. Bauret).
FIGURE 6 in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 6. Abrodictyum parviflorum (Poir.) Bauret & Dubuisson. A. typical habit, here as terrestrial (La Réunion, 'Mare Longue'). B. Brush-like 'meifolium' form (La Réunion, 'Grand Etang'). C. Plane 'parviflorum' form (La Réunion, 'Grand Etang'). D. Detail of subcapillary ultimate segments and sori (photographs. A: C. Chaussidon; B, D: L. Bauret; C: J.-Y. Dubuisson).
FIGURE 5 in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 5. Distribution of Hymenophyllaceae species richness in relation to elevations, here on the windward side of La Réunion and on Mauritius (data are reported in Appendices 1 & 2). The range of each taxon is assumed to correspond to the range between the minimum and the maximum elevation at which they have been observed, even if the taxon has not been observed in all intermediate localities between such limits.
FIGURE 14. A in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 14. A. Hymenophyllum fumarioides Bory ex. Willd, as epiphyte (La Réunion, 'Mare Longue'). B. H. fumarioides, detail of curled/crisped segments and sori with toothed margins. C. H. peltatum (Poir.) Desv., as epiphyte (La Réunion, 'Pitons Mare à Boue'). D. H. peltatum, detail of toothed/serrulate laminar margins. E. H. sibthorpioides (Bory ex Willd.) Mett. ex Kuhn, as epiphytic (La Réunion, 'Vallée Heureuse'). F. H. sibthorpioides, fertile frond and sori with toothed margins (photographs. A, E: C. Chaussidon; B, F: L. Bauret; C: J.-Y. Dubuisson; D: J.-M. Tamon).
FIGURE 4. Mauritian ecosystems. A in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 4. Mauritian ecosystems. A. Lowland Sapotaceae rainforest, here invaded by the exotic Malagasy traveller's trees Ravenala madagascariensis (Strelitziaceae) ('Vallée d'Osterlog' forest, ~260 m). B. 'Pétrin' locality showing particular habitat with thickets of the endemic Erica brachyphylla (Ericaceae) (~670 m) (photographs by J.-Y. Dubuisson).
FIGURE 11 in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 11. Crepidomanes trinerve (Baker) Dubuisson & Ebihara. A. As lithophyte in a wet ravine of the western side of La Réunion ('Les Canots'; photograph by J.-M. Tamon). B. Habit (from Comores, F. Rakotondrainibe 6651, P00310478; modified from Dubuisson et al. 2013).
FIGURE 3. Particular Mascarenan ecosystems. A in Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Mascarene archipelago, with ecological implications
FIGURE 3. Particular Mascarenan ecosystems. A. Hyperhumid montane 'Avoune' vegetation dominated by the endemic Erica reunionensis (Ericaceae), with most trunks and branches fully covered by epiphytes (liverworts, mosses, peat mosses, lycopods and ferns, especially here Hymenophyllum capillare and H. inaequale, and orchids) (La Réunion, 'Pitons Mare à Boue', ~1,600 m). B. Montane 'Tamarinaie' dominated by endemic Acacia heterophylla (Fabaceae), showing as for 'Avoune' tree-trunks and branches fully covered by epiphytes, including here H. inaequale (La Réunion, 'Bélouve', ~1,520 m). C. Remnant of leeward lowland semi-dry forest (La Réunion, 'Ilet Solitude', ~550 m). D. Typical wet ravines that host lithophytic Hymenophyllaceae on the wet and shaded rocks close to streams and waterfalls. (photographs. A: J.-Y. Dubuisson; B–C: J.-M. Tamon; D: A. Mercier).
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