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

NameAuthorSourceCitationYear
PETROCELISJ.G. Agardh image
PETROCELISJ.G. Agardh image
Petrocelis anastomosansDawson image
Petrocelis anastomosansE.Y. Dawson Pac. Nat. 2: 195, pl. 2: fig. 3 1961
Petrocelis ascendensDawson image
Petrocelis ascendensE.Y. Dawson Pac. Nat. 2: 193, pl. 2: fig. 2 1961
Petrocelis cruentaJ. Agardh image
Petrocelis franciscanaSetchell & N.L. Gardner in Gardner Univ. Calif. Publ. Bot. 6: 391, pl. 33: fig. 1 1917
Petrocelis franciscanaW.A. Setchell & N.L. Gardner image
Petrocelis haematisG.J. Hollenberg Amer. J. Bot. 30: 575, text-fig. 12 1943
Petrocelis hennedyi(Harvey) Batters image
Petrocelis middendorffii(F.J. Ruprecht) F.R. Kjellman image
Petrocelis polygyna(Kjellman) Rosenvinge image
Petrocelis ruprechtiiHauck image