2051 | Melosira, |
2052 | Herbarium Image: Myosotis scorpioides |
2053 | Ceraclea dissimilis larva, |
2054 | Pleurotaenium, |
2055 | Progress Report December 1992 |
2056 | Herbarium Image: Rorippa islandica |
2057 | Gyrosigma, |
2058 | Progress Report June 1989 |
2059 | Syngenta Pond Physchem Data (2003) |
2060 | Heptagenia fuscogrisea |
2061 | Peridinium, |
2062 | Prymnesium |
2063 | Gomphosphaeria, |
2064 | Porphyridium, |
2065 | Uroglena volvox |
2066 | Herbarium Image: Mimulus luteus |
2067 | Herbarium Image: Nitella opaca |
2068 | Herbarium Image: Nitella opaca |
2069 | Herbarium Image: Potamogeton perfoliatus |
2070 | Herbarium Image: Oenanthe fluviatilis |
2071 | Nostoc, |
2072 | Herbarium Image: Potamogeton crispus |
2073 | Trentepohlia, |
2074 | Herbarium Image: Potamogeton gramineus |
2075 | Prymnesium |