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34 results for “Isoetaceae”
FIGURE 4 in Two new diploid species of Isoetes (Isoetaceae: Lycopodiopsida) from Southeastern China based on morphological and molecular evidence
FIGURE 4. Chloroplast phylogenetic tree of Isoetes species. ML bootstrap values are presented under branches. Isoetes malinverniana and Isoetes nuttallii were set as the outgroups.
FIGURE 5 in On the typification of three Isoetes names (Isoetaceae, Lycopodiopsida) described from France
FIGURE 5. Lectotype (the seven plants on the lower half of the sheet) of Isoetes tenuissima (P barcode P01190869).
FIGURE 4 in On the typification of three Isoetes names (Isoetaceae, Lycopodiopsida) described from France
FIGURE 4. SEM images of megaspores from the lectotype of Isoetes echinospora: A. distal view; B. proximal view; C. equatorial view. Scale bar = 100 µm.
FIGURE 6 in On the typification of three Isoetes names (Isoetaceae, Lycopodiopsida) described from France
FIGURE 6. SEM images of spores from the lectotype of Isoetes tenuissima (spores were removed from the second individual from the right in the lower part of the sheet P barcode P01190869): A. Megaspore proximal view; B. Megaspore distal view; C. Megaspore equatorial view; D. Microspore equatorial view. Megaspore scale bar = 100 µm. Microspore scale bar = 10 µm.
FIGURE 3 in On the typification of three Isoetes names (Isoetaceae, Lycopodiopsida) described from France
FIGURE 3. Lectotype (the individual bottom left, dissected as seven pieces and attached to a single label) of Isoetes echinospora (P barcode P01217445).
FIGURE 5 in Two new diploid species of Isoetes (Isoetaceae: Lycopodiopsida) from Southeastern China based on morphological and molecular evidence
FIGURE 5. Phylogenetic tree of the second intron of LEAFY homolog. The circles stand for bootstraps ≥ 70. Isoetes hypsophila was set as the outgroup.
FIGURE 2. Isoetes yuhangensis X. Liu & Y.C. Chen. A in Two new diploid species of Isoetes (Isoetaceae: Lycopodiopsida) from Southeastern China based on morphological and molecular evidence
FIGURE 2. Isoetes yuhangensis X. Liu & Y.C. Chen. A. Proximal view of megaspore. B. Distal view of megaspore. C. Equatorial view of megaspore of. D. Proximal view of microspore of. E. Distal view of microspore. F. Mitotic chromosomes of root tip cells. G. Megasporangium. H. Microsporangium. I. Habitat. Scale bars: A–C = 100 μm; D–E = 5 μm; F = 20 μm; G–H = 2 mm.
FIGURE 1. Isoetes changleensis Y.C. Chen & X. Liu. A in Two new diploid species of Isoetes (Isoetaceae: Lycopodiopsida) from Southeastern China based on morphological and molecular evidence
FIGURE 1. Isoetes changleensis Y.C. Chen & X. Liu. A. Proximal view of megaspore. B. Distal view of megaspore. C. Equatorial view of megaspore. D. Proximal view of microspore. E. Distal view of microspore. F. The mitotic chromosomes of root tip cells. G. Megasporangium. H. Microsporangium. I. Habitat. Scale bars: A–C = 100 μm; D–E = 5 μm; F = 20 μm; G–H = 2 mm.
FIGURE 2 in The genus Isoetes (Isoetaceae): a provisional checklist of the accepted and unresolved taxa
FIGURE 2. Distribution of the different ploidy levels in the genus Isoetes. Odd numbers have not been considered.
FIGURE S1 in Two new diploid species of Isoetes (Isoetaceae: Lycopodiopsida) from Southeastern China based on morphological and molecular evidence
FIGURE S1. Spore morphology of Isoetes in China. (A) I. changleensis (B) I. yuhangensis (C) I. taiwanensis (cited from Liu et al. 2008). (D) I. sinensis (cited from Liu et al. 2008). (E) I. baodongii (cite from Lu et al. 2021). (F) I. longpingii (cite from Shu et al. 2022). (G) I. xiangfei (cite from Shu et al. 2022). (H) I. orientalis (cited from Liu et al. 2008). (I) I. yunguiensis (cited from Liu et al. 2008). (J) I. hypsophila (cited from Li et al. 2019). (K) I. shangrilaensis (cited from Li et al. 2019). Scale bars: A1–A3 = 100 μm; A4–A5 = 5 μm; B1–B3 = 100 μm; B4–B5 = 5 μm; C1–C3 = 150 μm; C4 = 12 μm; C5 = 8.6 μm; D1–D3 = 150 μm; D4–D5 = 10 μm; E1–E2 = 100 μm; E3–E4 = 10 μm; F1–F2 = 100 μm; F3–F4 = 10 μm; G1–G2 = 100 μm; G3–G4 = 10 μm; H1–H2 = 75 μm; H3–H4 = 4 μm; I1,I3 = 176 μm; I2 = 136 μm; I4–I5 = 10 μm; J1–J3 = 200 μm; J4–J5 = 10 μm; K1–K3 = 200 μm; K4–K5 = 10 μm.
FIGURE 1 in Lectotypification and observations on the morphology, distribution and conservation status of Isoetes luetzelburgii (Isoetaceae)
FIGURE 1. Isoetes luetzelburgii (Santiago 1286). A. Distribution map in Brazil with the newly confirmed populations in orange circles. B. Habitat in the rainy season. C. Dry water pond in the dry season (same locality as on Fig. 1B). D. Dry collected plant. E. Habit of green plants.
FIGURE 1 in Isoetes ×gopalkrishnae (Isoetaceae), a new interspecific sterile hybrid from central India
FIGURE 1. Isoetes ×gopalkrishnae. A–C. Plants growing in habitat. C. Location of plants (Image taken from www.googlemap.com). D–E. Sporangial wall showing long thread like and irregular shaped dark brown cells with internal pigments. F–G. Megasporangia under SEM and LM. H. Transvers section of leaf shows terete (rounded) in outline, interstellar canal 1 and 4 longitudinal transversally septate air chambers.
FIGURE 2 in Isoetes ×gopalkrishnae (Isoetaceae), a new interspecific sterile hybrid from central India
FIGURE 2. Scanning electron microphotographs of Isoetes ×gopalkrishnae. A–D, I. Larger megaspore. E–F. Smaller megaspore. G–H, J. Microspore. A, E. Distal view of megaspores showing coarsely rugulate surface ornamentation. B. Distal view of megaspore showing coarsely rugulate surface ornamentation with presence of smooth equatorial girdle. C, F. Proximal view of trilete megaspore showing rugulae with pustules. D. Proximal view of monolete megaspore showing coarse rugulae with pustules. G. Microspores with distal and proximal view showing densely echinate to short-cristate surface ornamentation. H. Proximal view. I. Infrastructural details of megaspore. J. Infrastructural details of the surface of microspore showing echinae rounded, simple or branched.
FIGURE 3 in A contribution to the phylogeny and biogeography of the genus Isoetes (Isoetaceae, Lycopodiidae) in the Mediterranean region
FIGURE 3. General distribution of the younger Isoetes "E" Group, subgroup "delilei". From the left (west): I. delilei, I. todaroana, I. phrygia. Map generated with Google Earth (image Landsat/Copernicus).
FIGURE 1 in A contribution to the phylogeny and biogeography of the genus Isoetes (Isoetaceae, Lycopodiidae) in the Mediterranean region
FIGURE 1. Preliminary Maximum Likelihood tree of examined taxa based on LFY sequences. The tree with the highest log likelihood (-2195.31) is shown. Bootstrap values are shown next to the branches. The tree is drawn to scale, with branch lengths measured in the number of substitutions per site. Specimens sampled for the present work are marked with an asterisk. Letters "B" and "E" refer to the named clades in Larsén & Rydin (2016).
FIGURE 2 in A contribution to the phylogeny and biogeography of the genus Isoetes (Isoetaceae, Lycopodiidae) in the Mediterranean region
FIGURE 2. Preliminary Maximum Likelihood tree of examined taxa based on ITS sequences. The tree with the highest log likelihood (-2194.95) is shown. Bootstrap values are shown next to the branches. The tree is drawn to scale, with branch lengths measured in the number of substitutions per site. Letters "B", "C" and "E" refer to the named clades in Larsén & Rydin (2016). Polyploid species are in bold.
TABLE 1 in Two new diploid species of Isoetes (Isoetaceae: Lycopodiopsida) from Southeastern China based on morphological and molecular evidence
<p><b>TABLE 1.</b> Comparative accounts on the morphology of megaspores and microspores of <i>Isoetes</i> species in China.</p><table><tbody><tr><th></th><th><i>I. changleensis</i></th><th><i>I. yuhangensis</i></th><th><i>I. baodongii</i></th><th><i>I. sinensis</i></th><th><i>I. longpingii</i></th><th><i>I. xiangfei</i></th><th><i>I. orientalis</i></th><th><i>I. taiwanensis</i></th><th><i>I. yunguiensis</i></th><th><i>I. hypsophila</i></th><th><i>I. shangrilaensis</i></th></tr></tbody><tbody><tr><th>Megaspore diameter (μm)</th><td>246–314</td><td>270–324</td><td>390–510</td><td>317–424</td><td>310–410</td><td>390–450</td><td>350–460</td><td>280–340</td><td>340–430</td><td>361–510</td><td>207–273</td></tr><tr><th>Mean megaspore size (μm)</th><td>284</td><td>302</td><td>450</td><td>378</td><td>350</td><td>430</td><td>420</td><td>312</td><td>390</td><td>450</td><td>245</td></tr><tr><th>Ornamentation of megaspores</th></tr><tr><th>proximal surface</th><td>tuberculate</td><td>rugulate</td><td>echinate-cristate</td><td>echinate</td><td>tuberculate-cristate</td><td>cristate-reticulate</td><td>cristate-reticulate</td><td>tuberculate</td><td>cristate-reticulate</td><td>levigate</td><td>levigate</td></tr><tr><th>Equatorial surface (girdle)</th><td>rugulate</td><td>smooth</td><td>/</td><td>loss</td><td>/</td><td>/</td><td>/</td><td>smooth</td><td>loss</td><td>loss</td><td>smooth</td></tr><tr><th>distal surface</th><td>rugulate</td><td>rugulate</td><td>echinate-cristate</td><td>echinate-cristate</td><td>tuberculate-cristate</td><td>cristate-reticulate</td><td>cristate-reticulate</td><td>tuberculate-cristate</td><td>cristate-reticulate</td><td>levigate</td><td>tuberculate-rugulate</td></tr><tr><th>Range microspore size (μm)</th><td>14–20</td><td>16–26</td><td>22–27</td><td>20–29</td><td>27–30</td><td>26–28</td><td>20–38</td><td>20–28</td><td>20–25</td><td>19–25</td><td>11–24</td></tr><tr><th>Mean microspore size (μm)</th><td>18</td><td>21</td><td>25</td><td>25</td><td>29</td><td>27</td><td>34</td><td>24</td><td>22</td><td>22</td><td>19</td></tr><tr><th>Ornamentation of microspores</th><td>blunt-tipped echinate</td><td>sharp-tipped echinate</td><td>echinate</td><td>echinate</td><td>echinate</td><td>echinate</td><td>echinate-tuberculate</td><td>echinate</td><td>levigate-granulate</td><td>rugulate</td><td>echinate-cristate</td></tr><tr><th>Chromosome number</th><td>22</td><td>22</td><td>22</td><td>44</td><td>44</td><td>44</td><td>66</td><td>22</td><td>22</td><td>22</td><td>22</td></tr><tr><th>Data Source</th><td>this study</td><td>this study</td><td>Lu <i>et al.</i> 2021</td><td>Liu <i>et al.</i> 2008</td><td>Shu <i>et al.</i> 2022</td><td>Shu <i>et al.</i> 2022</td><td>Liu <i>et al.</i> 2008</td><td>Liu <i>et al.</i> 2008</td><td>Liu <i>et al.</i> 2008</td><td>Li <i>et al.</i> 2019</td><td>Li <i>et al.</i> 2019 Shu <i>et al.</i> 2022</td></tr></tbody></table><p>Note:/ represents no data.</p>
FIGURE 4 in The Isoetes longissima complex (Isoetaceae) in Italy: observations on the morphology of spores and leaves, and taxonomic implications
FIGURE 4. Graphic showing the morphological relationships (based on the number of leaves per plant) among the taxa here examined. The presence of a continuous line between two taxa evidences no statistically significant difference (Tukey HSD test, p> 0.39); the presence of a discontinuous line between I. sicula and I. tiguliana evidences a still not significant difference but with a lower p (0.11).
FIGURE 5 in The Isoetes longissima complex (Isoetaceae) in Italy: observations on the morphology of spores and leaves, and taxonomic implications
FIGURE 5. Drawings of leaf bases of Isoetes longissima (A) and I. tiguliana (B), based on Italian material, showing the different size and extension of leaf alae.
FIGURE 3 in The Isoetes longissima complex (Isoetaceae) in Italy: observations on the morphology of spores and leaves, and taxonomic implications
FIGURE 3. Number of leaves per plant in the examined taxa. Whiskers show the minimum and maximum values.
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