The INA is a card file and online reporting system maintained at the Silva Center for Phycological Documentation of the University Herbarium, University of California, Berkeley. It contains nearly 200,000 names of algae (in the broad sense). The BPU is a card file containing bibliographic references pertaining to algal taxonomy.
A working list of algal type specimens at UC is available here
Results from INA database
| Name | Author | Source | Citation | Year |
|---|---|---|---|---|
| Navicula tuscula | Ehrenberg | Ber. Bekanntm. Verh. Königl. Preuss. Akad. Wiss. Berlin | 1840: 215 | 1840 |
| Navicula tuscula f. angulata | Hustedt | Arch. Hydrobiol. | 39: 120, fig. 37 | 1942 |
| Navicula tuscula f. intermedia | Kisselev | Trudy Nauchno-Issl. Inst. Bot. | 7: 87, 93, figs. 10-13 | 1932 |
| Navicula tuscula f. longerostrata | Ant. Mayer | Denkschr. K.-Baier. Bot. Ges. Regensburg | 19: 149, pl. I: fig. 9 | 1933 |
| Navicula tuscula f. minor | Hustedt | image | ||
| Navicula tuscula f. minor | Hustedt in Pascher | Süssw.-Fl. | 10, 2.Aufl.: 308, fig. 553 | 1930 |
| Navicula tuscula f. minor | Simonsen | image | ||
| Navicula tuscula f. obtusa | (Hustedt) Hustedt in Pascher | Süssw.-Fl. | 10, ed. 2: 309 | 1930 |
| Navicula tuscula f. rostrata | (Hustedt) Hustedt in Pascher | Süssw.-Fl. | 10, ed. 2: 308 | 1930 |
| Navicula tuscula f. rostrata | Hustedt | image | ||
| Navicula tuscula var. arata 'Grunow' | image | |||
| Navicula tuscula var. arata | Grunow | image | ||
| Navicula tuscula var. dense-punctata | Cleve-Euler | image | ||
| Navicula tuscula var. densistriata | Skvortzov | image | ||
| Navicula tuscula var. media | Jurilj | image | ||
| Navicula tuscula var. obtusa | Hustedt | Int. Rev. Hydrobiol. u. Hydrogr. | 10: 242 | 1922 |
| Navicula tuscula var. rostrata | Hustedt | Abh. Naturw. Ver. Bremen | 20: 287, pl. III: fig. 22 | 1911 |
| Navicula tuscula var. schinzii | Limanowska | Arch. Hydrobiol. | 7: 365, fig. 2 | 1912 |
| Navicula tuscula var. stroesei Østrup | image | |||
| Navicula tuscula var. stroesei_(`strösei') | Østrup | Danske Diat.: | 84 | 1910 |
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