Research Article
A Comparative Study of Two Endemic Isoëtes Species from South Italy
Table 1
Characters used to compare and describe individuals.
| Morphometric characteristics | Isoëtes iapygia | Isoëtes todaroana |
| Corm lobes | Trilobed | Rounded | Corm width (cm) | 0.8 | 0.5 | Shape of corm section | Hexagonal | Irregular | Root shape | Dichotomous | Dichotomous | Leaf shape | Filiform, arched | Lanceolate, erect | Leaf number | 20 | 25 | Velum | Complete | Complete | Stomata | Present | Present | Number of air chambers | 2 | 2 | Scales | Present | Absent | Phyllopodia | Absent | Present | Macrospore macroornamentation | Tuberculate | Tuberculate | Microspore macroornamentation | Coniculate-echinate | Aculeate | Macrospore microornamentation | Densely fimbriate | Filamentous | Macrospore diameter (μm) | 450 | 440 | Macrospore profile | Rounded | Triangular | Microspore lenght (μm) | 30 | 25 | Ligule shape | Ovate | Lanceolate | Ligule lenght (mm) | 1.2 | 1.0 | Laesura arms | Flattened | Raised | Equatorial ring | Little pronounced | Pronounced | Ecological characters | | | Habitus | Terrestrial | Amphibious | pH of soil | 7.3 | 8.7 | Type of soil | clay | clay | Geological substrate | Limestone | Sandstone | Habitat | | | Type (Natura 2000 Code) | 3170* | 3170* | Characteristic species of community | Pleurochaete squarrosa (Brid.) Lindb., Cheilotela chloropus (Brid.) Broth., Ranunculus sardous Crantz, Polypogon maritimus Willd., Romulea bulbocodium (L.) Sebast. et Mauri, Romulea columnae Sebast. et Mauri. | Bolboschoenus maritimus (L.) Palla, Eleocharis palustris (L.) Roem. and Schult., Scirpus cernuus Vahl, Mentha pulegium L., Oenanthe sp., Lythrum sp., Tamarix sp., Romulea sp., | Geographical range | | | Sites of presence | 10 | 1 | Chorology | Southern Puglia | Insufficient data |
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