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112 results for “Cyatheaceae”
FIG. 1 in A revision of the fern family Cyatheaceae in the Mascarene Islands
FIG. 1. — Cyathea borbonica Desv. var. borbonica: A, pinnules abaxially (sori partly omitted), detail of sori with acaroid squamules on costulae and appressed multicellular hairs on the veins of adaxial face of pinnule apices; B, two pinnae abaxially with part of rachis (sori partly omitted); C, habit; D, pinnules abaxially (sori partly omitted), form with rounded apices; E, scales from petiole base (left: three scales agglutinated with their bases; right: single scale); F, basal part of the leaf (petiole base up to first pinna pairs), lateral view; G, leaf scars. A, B, G, Janssen et al. 2697, P; C, uncollected, photograph at P; D-F, Janssen et al. 2670, P. Scale bars: A, D, E, G, 1 cm; A insets, 1 mm; B, F, 5 cm; C, 1 m.
FIG. 4 in A revision of the fern family Cyatheaceae in the Mascarene Islands
FIG. 4. — Cyathea excelsa Sw.: A, pinnule segments abaxially with part of costula (sori partly omitted); B, two pinnules abaxially with part of costa (sori partly omitted); C, habit; D, four sporangiasters from the receptacle; E, basal part of the leaf (petiole base up to first pinna), lateral view, one half of the petiole pruned away by longitudinal section, a pair of reduced pinnae is present at 14 cm from the petiole base; F, scale from petiole base. A-C, E, F, Janssen et al. 2749, P; D, Boivin s.n., P. Scale bars: A, 0.5 cm; B, F, 1 cm; C, 1 m; D, 200 µm; E, 5 cm.
FIG. 6 in A revision of the fern family Cyatheaceae in the Mascarene Islands
FIG. 6. — Cyathea grangaudiana Th.Janssen & Rakotondr., sp. nov.: A, pinnae abaxially (sori partly omitted) with part of rachis; B, pinnules abaxially with part of costa (sori partly omitted), antrorse acicular hairs on abaxial face of costula; C, habit; D, basal part of the leaf (petiole base up to first four pinna pairs), lateral view, pinnae pruned away on one side; E, two normally developed sporangia (below) and four sporangiasters from the receptacle; F, leaf scars; G, scale from petiole base. A-D, F, G, Janssen et al. 2738, P; E, Friedman 3102, P. Scale bars: A, 2 cm; B, D, F, 1 cm; B inset, E, 200 µm; C, 1 m; G, 0.5 cm.
The dataset of five chloroplast regions used in: A contribution to Gymnosphaera (Cyatheaceae) in mainland Asia: Two new species, reinstatement of Cyathea bonii, and their phylogenetic positions
<p><em>Gymnosphaera</em> represents a minor lineage within the scaly tree-fern family Cyatheaceae. Tropical and subtropical mainland Asia is a main distribution area of <em>Gymnosphaera</em>. However, the species diversity of <em>Gymnosphaera</em> is currently incompletely known in mainland Asia due to lacking critical revision. Here we present new findings of species diversity and their relationships with mainland Asian <em>Gymnosphaera</em> based on field surveys, the examination of herbarium collections, and phylogenetic analyses of sequences of multiple chloroplast and nuclear regions. Two new species, <em>G. saxicola</em> from southwestern Yunnan and <em>G. bachmaensis</em> from central Vietnam are established. Traditionally recognized <em>G. podophylla </em>is revealed to be a complex, from which <em>G. bonii</em> is reinstated as a distinct species. Our phylogenetic analyses identified four clades within <em>Gymnosphaera</em> in mainland Asia: <em>G. denticulata</em> clade, <em>G. gigantea</em> clade, <em>G. podophylla </em>clade, and <em>G. salletii </em>clade. The new species <em>G. saxicola,</em> which is special for its saxicolous habitat, was resolved as a sister to <em>G. austroyunnanensis</em> in the <em>G. salletii</em> clade. The newly discovered <em>G. bachmaensis</em>, which is characterized especially by the spathulate frond, was positioned in the <em>G. podophylla</em> clade, being sister to <em>G. bonii</em>. The mountainous region from south-central Vietnam northwards to western Yunnan is a diverse center of <em>Gymnosphaera</em> and more species of this group are probably to be discovered there.</p>
The dataset of five chloroplast regions used in: A contribution to Gymnosphaera (Cyatheaceae) in mainland Asia: Two new species, reinstatement of Cyathea bonii, and their phylogenetic positions
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A contribution to Gymnosphaera (Cyatheaceae) in mainland Asia: two new species, reinstatement of Cyathea bonii, and their phylogenetic positions
<p><em>Gymnosphaera</em> represents a minor lineage within the scaly tree-fern family Cyatheaceae. Tropical and subtropical mainland Asia is a main distribution area of <em>Gymnosphaera</em>. However, the species diversity of <em>Gymnosphaera</em> is currently incompletely known in mainland Asia due to lacking critical revision. Here we present new findings of species diversity and their relationships of mainland Asian <em>Gymnosphaera</em> based on field surveys, the examination of herbarium collections, and phylogenetic analyses of sequences of multiple chloroplast and nuclear regions. Two new species, <em>G. saxicola</em> from southwestern Yunnan and <em>G. bachmaensis</em> from central Vietnam, are established. Traditionally recognized <em>G. podophylla </em>is revealed to be a complex, from which <em>G. bonii</em> is reinstated as a distinct species. Our phylogenetic analyses identified four clades within <em>Gymnosphaera</em> in mainland Asia: <em>G. denticulata</em> clade, <em>G. gigantea</em> clade, <em>G. podophylla </em>clade, and <em>G. salletii </em>clade. The new species <em>G. saxicola,</em> which is special for its saxicolous habitat, was resolved as sister to <em>G. austroyunnanensis</em> in the <em>G. salletii</em> clade. The newly discovered <em>G. bachmaensis</em>, which is characterized specially by the spathulate frond, was positioned in the <em>G. podophylla</em> clade, being sister to <em>G. bonii</em>. The mountainous region from south-central Vietnam northwards to western Yunnan is a diverse center of <em>Gymnosphaera</em> and more species of this group are probably to be discovered there.</p>
FIGURE 3 in Cyathea fabiolae (Cyatheaceae, Polypodiopsida), a new scaly tree fern from the northern Andes
FIGURE 3. Croziers of A) C. fabiolae, B) C. tortuosa, and C) C. brunnescens. Note lack of villosity, near lack of scurf, and orange-brown scales in C. fabiolae in contrast to C. tortuosa (villous axes abaxially, brown scales) and C. brunnescens (markedly scurfy rachis, brown scales).
FIGURE 2 in Cyathea fabiolae (Cyatheaceae, Polypodiopsida), a new scaly tree fern from the northern Andes
FIGURE 2. Known localities (black circle, type locality; open circles, localities known from photographic evidence; gray circle, paratype locality) of Cyathea fabiolae along the Amazonian slope of the Andes in Peru and Ecuador. Photographic records: a. Pacto Sumaco, Napo: -0.618, -77.598; b. Mera, Pastaza: -1.438, -78.130; c. Quimi, Morona Santiago: -3.489, -78.417; by Adrian Tejedor, June, 2016.
FIGURE 1. Cyathea fabiolae. A in Cyathea fabiolae (Cyatheaceae, Polypodiopsida), a new scaly tree fern from the northern Andes
FIGURE 1. Cyathea fabiolae. A, pinna, silhouette; B, petiole scale; C, fertile pinnule abaxially; D, fertile segment, abaxially, from G. Calatayud 6220.
FIGURE 4. A–E in A new hybrid and further taxonomic notes on Brazilian tree ferns (Cyatheaceae)
FIGURE 4. A–E. Cyathea mexiae (Schwartsburd 2983 [VIC]): A. Base of petiole, showing aculei, scales, and scurf. B. Petiolar aculei and scurf. C. Medial pinna. D. Rachis, pinna-rachis, and pinnules, abaxially, showing sericeous axes and sessile pinnules. E. Segment, abaxially, showing sori, hairs, and bullate scales on costule. F–J. Alsophila salvinii (Schwartsburd 3369 [VIC]): F. Base of petiole, showing scales and broken-off aphlebiae. G. Entire aphlebia with laminar expansions. H. Broken-off aphlebia without laminar expansion. I. Medial pinna. J. Rachis, pinna-rachis, and pinnules, abaxially, showing scurf, scales, and segments.
FIGURE 3. A–C in A new hybrid and further taxonomic notes on Brazilian tree ferns (Cyatheaceae)
FIGURE 3. A–C. VIC: Cyathea corcovadensis s. str. (Silva 1593): A. Departure of pinnule (tangential section) from pinna-rachis (cross section), showing the schlerenquima ring internally on pinnule articulation (arrows). B. Mesophyll in cross section. C. Stomata from abaxial surface of lamina. D–F. Cyathea ×stella-matutina (Schwartsburd 3303 [VIC]): D. Departure of pinnule (tangential section) from pinna-rachis (cross section), showing the sclerenchyma ring internally on pinnule articulation (arrows). E. Mesophyll in cross section (asterisk showing intercellular protuberances). F. Stomata from abaxial surface of lamina. G–I. Cyathea microdonta (Schwartsburd 3300 [VIC]): G. Departure of pinnule (tangential section) from pinna-rachis (cross section), showing the absence of a sclerenchyma ring internally. H. Mesophyll in cross section (asterisk showing intercellular protuberances). I. Stomata from abaxial surface of lamina.
FIGURE 5. A in A new hybrid and further taxonomic notes on Brazilian tree ferns (Cyatheaceae)
FIGURE 5. A. Petiolar scale of Cyathea mexiae (Schwartsburd 2983 [VIC]). B. Petiolar scales of Alsophila salvinii (Schwartsburd 3369 [VIC]). Bar of 0.5 cm.
FIGURE 2. A in A new hybrid and further taxonomic notes on Brazilian tree ferns (Cyatheaceae)
FIGURE 2. A. Petiolar scale of Cyathea corcovadensis s. str. (Schwartsburd 3455 [VIC]). B. Petiolar scale of C. ×stella-matutina (Schwartsburd 3303 [VIC]). C. Petiolar scale of C. microdonta (Schwartsburd 3462 [VIC]). Bar of 0.5 cm.
FIGURE 1. A in A new hybrid and further taxonomic notes on Brazilian tree ferns (Cyatheaceae)
FIGURE 1. A. Lamina apex of Cyathea corcovadensis s. str. (Bovini 1537 [VIC]). B. Lamina apex of C. microdonta (Schwartsburd 3300 [VIC]). C–G. Cyathea ×stella-matutina (Schwartsburd 3303 [VIC]): C. Lamina apex. D. Petiolar aculei. E–G. Medial pinnules, showing variation on degree of dissection and size.
FIGURE 3 in Three new species of the Cyathea "Hymenophyllopsis" clade (Cyatheaceae) from Venezuela and Brazil
FIGURE 3. Distribution of Cyathea alsophiloides (stars), C. cylindrica (dot), and C. lellingeriana (triangle) in Venezuela and Brazil.
FIGURE 2. A–D in Three new species of the Cyathea "Hymenophyllopsis" clade (Cyatheaceae) from Venezuela and Brazil
FIGURE 2. A–D. Cyathea lellingeriana: A. Habit. B. Rhizome scale. C. Detail of the pinna. D. Detail of clavate hair on the rachises. E. Detail of the indusia (A Steyermark et al. 109201, NY; B–E Steyermark et al. 109201, US).
FIGURE 1. A–D in Three new species of the Cyathea "Hymenophyllopsis" clade (Cyatheaceae) from Venezuela and Brazil
FIGURE 1. A–D. Cyathea alsophiloides: A. Habit. B. Rhizome scale. C. Detail of the pinna adaxially. D. Detail of the indusia (Steyermark et al. 128825-A, US). E–I. Cyathea cylindrica: E. Habit. F. Rhizome scale. G. Detail of the pinna adaxially. H. Detail of the hairs catenate and clavate on the rachises. I. Detail of the indusia (Liesner 17989, US).
FIGURE 2 in Cyathea ruttenbergii, a new tree fern (Cyatheaceae, Polypodiopsida) from Puerto Rico
FIGURE 2. Field characters of Cyathea ruttenbergii and similar species. A. Cyathea ruttenbergii, fertile frond, adaxially (Luquillo Mountains, Rio Grande, Puerto Rico). B. Cyathea pungens, fertile frond, adaxially (Pilcopata, Cusco, Peru). C. Cyathea borinquena, fertile frond, adaxially (Luquillo Mountains, Rio Grande, Puerto Rico). D. Cyathea ruttenbergii, trunk apex. E. Cyathea pungens, trunk apex. F. Cyathea borinquena, trunk apex. G. Cyathea ruttenbergii, petiole. H. Cyathea pungens, petiole. I. Cyathea borinquena, petiole. All photos by A. Tejedor.
FIGURE 3. Cyathea leoniae. A in Cyathea leoniae (Cyatheaceae), a new pinnate-pinnatifid tree fern species from Northern Peru
FIGURE 3. Cyathea leoniae. A. SEM pictures of globose sorus with sphaeropteroid indusium. B. Adaxial view of open sorus with several remaining sporangia. C. Lateral view of two sporangia with their annulus. D. Distal (above) and equatorial (below) view of verrucate spore (from holotype, Acuña 1448). Scale bars—100 μm.
FIGURE 2. Cyathea leoniae. A in Cyathea leoniae (Cyatheaceae), a new pinnate-pinnatifid tree fern species from Northern Peru
FIGURE 2. Cyathea leoniae. A. Plant in its natural habitat. B. Concolorous, orange-brown petiole scales. C. Adaxial side of frond. D. Sphaeropteroid indusia on abaxial side (from holotype, Acuña 1448). Photographs by Elluz Huamán-Melo.
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