dc:description"Figure 1. Isoetes nana sp. nov. (from the holotype: Ule 98, G). A 1 - 4 Habit (images are courtesy of the herbarium G) B-D Megaspore B Proximal view of an obscurely cristate (B 1) and rugulate (B 2) megaspore C Distal view (<* portion of the megaspore covered by sporangium tissue) D Equatorial view E-G Microspore E Proximal view F Equatorial view G Distal view. Scale bars: A 1 - 4 = 1 cm; B-D = 100 µm; E-G = 2 µm.";
dc:description"Figure 7. SEM images of the megaspore of Isoetes nana (Ule 98, G), I. weberi (Herter 95840, US), I. quiririensis (Pereira 635, UPCB), I. maxima (Pereira 631, UPCB). A-B Details of the macrosculpture of the megaspore of I. nana A Proximal view B Distal view C Details of the microsculpture of the megaspore of I. nana in distal view showing the terminal ends of anastomosed bars joined forming bacillae or more rarely echinulae D-E Details of the macrosculpture of the megaspore of I. weberi D Proximal view E Distal view F Details of the microsculpture of the megaspore of I. weberi in distal view showing the terminal ends of anastomosed bars joined forming echinulae G-H Details of the macrosculpture of the megaspore of I. quiririensis G Proximal view H Distal view I Details of the microsculpture of the megaspore of I. quiririensis in distal view showing the terminal ends of anastomosed bars joined forming echinulae or rarely bacillae J-K Details of the macrosculpture of the megaspore of I. maxima J Proximal view K Distal view L Details of the microsculpture of the megaspore of I. maxima in distal view showing the terminal ends of anastomosed bars joined forming bacillae. Scale bars: A, B, D, E, G, H, J, K = 10 µm; C, F, I, L = 1 µm.";
dc:description"Figure 2. Geographical distribution of Isoetes nana (blue circle), I. maxima (purple triangle), I. quiririensis (orange diamond) and I. weberi (green squares) in southeastern South America. In Brazil: MG = Minas Gerais; PR = Parana; RJ = Rio de Janeiro; RS = Rio Grande do Sul; SC = Santa Catarina; SP = Sao Paulo.";
dc:description"Figure 3. SEM images of the megaspore of Isoetes ulei (Ule 3533, HBG), I. martii (Pereira 720, UPCB) and I. x goebelii (Pereira 718, UPCB). A-C Megaspore of I. ulei A Proximal view B Distal view C Equatorial view D-F Megaspore of I. martii D Proximal view E Distal view F Equatorial view G-I Megaspore of I. x goebelii G Proximal view H Distal view I Equatorial view. All scale bars = 100 µm.";
dc:description"Figure 5. SEM images of the microspore of Isoetes ulei (Ule 3533, HBG), I. martii (Regnel 1505, B) and I. x goebelii (Pereira 718, UPCB). A-C Microspore of I. ulei A Proximal view B Distal view C Equatorial view D-F Microspore of I. martii D Proximal view E Equatorial view F Distal view G-I Microspore of I. x goebelii G Proximal view H Equatorial view I Equatorial view. All scale bars = 2 µm";
dc:description"Figure 6. SEM images of the megaspore of Isoetes weberi (Herter 95840, US), I. quiririensis (Pereira 635, UPCB), I. maxima (Pereira 631, UPCB). A-C Megaspore of I. weberi A Proximal view B Distal view C Equatorial view D-F Megaspore of I. quiririensis D Proximal view E Distal view F Equatorial view G-I Megaspore of I. maxima J Proximal view K Distal view L Equatorial view. All scale bars = 100 µm.";
dc:description"Figure 8. SEM images of the microspore of Isoetes weberi (Herter 95840, US), I. quiririensis (Pereira 635, UPCB), I. maxima (Pereira 631, UPCB). A-C Microspore of I. weberi A Proximal view B Equatorial view C Distal view D-F Microspore of I. quiririensis D Proximal view E Equatorial view F Distal view G-I Microspore of I. maxima G Proximal view H Equatorial view I Distal view. All scale bars = 2 µm.";
dc:description"Figure 4. SEM images of the megaspore of Isoetes ulei (Ule 3533, HBG), I. martii (Pereira 726, UPCB) and I. xg oebelii (Pereira 718, UPCB). A-B Details of the macrosculpture of the megaspore of I. ulei A Proximal view B Distal view C Details of the microsculpture of the megaspore of I. ulei in distal view showing the terminal ends of anastomosed bars joined forming echinulae D-E Details of the macrosculpture of the megaspore of martii D Proximal view. E. Distal view F Details of the microsculpture of the megaspore of martii in distal view showing the terminal ends of anastomosed bars joined forming echinulae G-H Details of the macrosculpture of the megaspore of I. x goebelii G Proximal view H Distal view I Details of the microsculpture of the megaspore of I. x goebelii in distal view showing the terminal ends of anastomosed bars joined forming echinulae. Scale bars: A, B, D, E, G, H = 10 µm; C, F, I = 1 µm.";
