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 (&mu;m)</th><td>246&ndash;314</td><td>270&ndash;324</td><td>390&ndash;510</td><td>317&ndash;424</td><td>310&ndash;410</td><td>390&ndash;450</td><td>350&ndash;460</td><td>280&ndash;340</td><td>340&ndash;430</td><td>361&ndash;510</td><td>207&ndash;273</td></tr><tr><th>Mean megaspore size (&mu;m)</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 (&mu;m)</th><td>14&ndash;20</td><td>16&ndash;26</td><td>22&ndash;27</td><td>20&ndash;29</td><td>27&ndash;30</td><td>26&ndash;28</td><td>20&ndash;38</td><td>20&ndash;28</td><td>20&ndash;25</td><td>19&ndash;25</td><td>11&ndash;24</td></tr><tr><th>Mean microspore size (&mu;m)</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>