Silva Center for Phycological Documentation: Index Nominum Algarum

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

Pyxilla johnsoniana var. corniculumJ. Brun image
Cerataulus johnsonianus(Greville) Cleve image
Trachyneis johnsoniana(Greville) Cleve image
Pyxilla johnsoniana f. longiorA.I. Forti image
Stictodiscus johnsonianus f. trigonus_('trigona')Forti image
Craspedoporus johnsonianusGreville Trans. Microscop. Soc. London, ser. 2, 11: 69, pl. IV: fig. 10 1863
Auliscus johnsonianusR.K. Greville image
Biddulphia johnsonianaR.K. Greville image
Cestodiscus johnsonianusR.K. Greville image
Navicula johnsonianaGreville image
Pyxilla johnsonianaR.K. Greville image
Stictodiscus johnsonianusGreville image
Pyrgupyxis johnsonianaN.I. Hendey image
Pyrgupyxis johnsoniana var. intermedia(J.A.J.C. Tempère & A.I. Forti) N.I. Hendey image
Auliscus johnsonianus var. crateriferJ.-J. Brun image
JOHNSONIAKorde Trudy Paleont. Inst. Akad. Nauk SSSR 108: 275 1965
Johnsonia spinosaKorde Trudy Paleont. Inst. Akad. Nauk SSSR 108: 276, pl. LIV: figs. 3, 4, 7; text-fig. 54 1965
JOHNSONIAKorde image
Cladogramma johnsonianum(Greville) Kuntze Rev. Gen. Pl. 3{3}: 401 1898
Schizonema johnsonianum(R.K. Greville) C.E.O. Kuntze image
Stictodiscus johnsonianus var. trigonus_('trigona')(Castracane) Laporte & Lefebure image
Coscinodiscus johnsonianus(R.K. Greville) J. Rattray image
Pseudauliscus johnsonianus(Greville) Rattray image
Pseudauliscus johnsonianus var. eludensRattray image
Pyxilla johnsoniana var. intermediaJ.A.J.C. Tempère & A.I. Forti image
Stictodiscus johnsonianus f. quadratus_('quadrata')Truan y Luard & Witt image
Stictodiscus johnsonianus f. trigonus_('trigona')Truan y Luard & Witt image
Auliscus johnsonianus var. eludens(J. Rattray) S.L. VanLandingham image