Potamogetonaceae

PotamogetonrichardiiSolms,Beitr.Fl.Aethiop.1941867.【Indigenous】Aquaticherbwithslendertorobustrhizomes;stemsterete,upto1mlong.Submergedleavesdecayingearly.Floatingleaveselliptictooblong-ovate,3–8(–12.4)×(1.1–)2–4(–4.8)cm,basebroadlycuneatetorounded,apexbro ......（本文共 548 字 , 1 张图）     [阅读本文] >>