# Jürgens, Algae Aquaticae ## expand\_more **Jürgens**, Georg Heinrich Bernhard (1771-1846) **ALGAE AQUATICAE, QUAS IN LITTORA MARIS DYNASTIUM JEVERANAM ET FRISIAN ORIENTALEM ALLUENTIS REJECTAS, ET IN HARUM AQUIS HABITANTES** .... Decades I-XX, 200 numbers. Jever (Mettcker), 1816-1824. Specimens are dried on paper or mica. Index information was derived from herbarium sheet labels, the decades' tables of contents and two published papers: Jürgens, G. H. B. Beitrag zur Flora der Insel Wangeroge und Norderney and zur Flora Deutschlands. *Flora* 18(33):513-525 (1835), & Reinbold, Th. Revision of Jürgens' Algae Aquaticae. I. Die Algen des Meeres- und des Brackwassers. *Nuova Notarisia*, ser. 4, \[1893\]:192-200 (1893). Decade XX was apparently never published. --- *Berkeleya rutilans* \[*fide* Reinbold, 1893\] *Conferva foetida* Dillwyn *Conferva rutilans* Trentepohl *Schizonema rutilans* Germany (Niedersachsen) Jever, Jade Bay Germany (Niedersachsen) Norderney, Wangerooge, "Culmis stramineis ad haerens deprehenditur ultra aggrerem prope ad loum in Dynastia Jeverensis Tengshausen appelatum, adque ad canoleum in Frisia orientali, qui dicitur Frideriken schleuse, etiam que invadis recessum prope Daunsfeld." Jürgens decade 1, number 3 *Conferva hiemalis* *Conferva inflexa* Roth *Conferva moniliformis* O.F. Muller *Melosira moniliformis* C. Agardh *Melosira nummuloides* (Dillwyn) C. Agardh \[*fide* Reinbold, 1893\] Germany (Niedersachsen), "Rarissime conspicitur planta calamis Poae maritimae mense Oct. et Novembris et quidem in aquis mari recendenti non subsequentibus (Balgen) ad coemeterium Banterianum et in canaliculis illius telluris, recens mari ereptae (Groden)." Jürgens decade 1, number 7 *Berkeleya rutilans var. lutescens (Kützing) Grunow* \[*fide* Reinbold, 1893\] *Conferva majusculaConferva rutilansConferva rutilans* Trentepohl *Oscillatoria majuscula* *Schizonema majuscula* Germany (Niedersachsen) Wangerooge, "Haec planta occurrit mixta cim conferva rutilanti (Dec. 1 n. 3) et cum aliis prvis algis in aquis ultra molem (Watten) ibidemque in (Balgen) exempli causa inter insulam Wangerogam & terram continentem prope breite Leegte, ...." Jürgens decade 4, number 7 *Conferva lineata* Dillwyn *Melosira juergensii* Agardh \[*fide* Reinbold, 1893\] Germany (Niedersachsen) Norderney, "Observai hanc elegantem confervam in insula Norderney et quidem in profundo quodam cananiculo prope der Batterie." Jürgens decade 5, number 10 *Achnanthes longipes* Agardh *Achnanthes brevipes* C. Agardh \[*fide* Reinbold, 1893\] *Conferva stipitata* \[J.E. Smith\] *Diatoma vexillum* Jürgens Germany (Niedersachsen) Wangerooge, "Haec nitidissima planta, quae primum a Dna. Biddulph et Hill in Anglia, mense Julio 1812, dedecta.et mihi in insula Wangerogae mense Julio 1817 invenire contigit, gregatim in aliis marinis crescit, e. c., in ceramio virgato, conferva diffusa et aliis." Jürgens decade 6, number 6 *Conferva ochracea* Roth Germany (Niedersachsen), "In fossis arenosis, aestate." Jürgens decade 6, number 7 *Conferva taenaeiformis* \[J.E. Smith\] *Diatoma taeniaeforme* *Grammatophora marina* (Lyngbye) Kützing \[*fide* Reinbold, 1893\] Germany (Niedersachsen) Jahdae; "Observai has plantas parasiticas in Ceramio virgato in Jahdae fluvio ad oras terrae Jeverensis prope Bantersiel et Mariensiel. Mense Mayo." Jürgens decade 6, number 8 *Diatoma flabellatum* Jürgens *Gomphonema paradoxum* *Podosphenia communis* Heiberg \[*fide* Reinbold, 1893\] *Rhipidophora paradoxa* (Lyngbye) Kützing \[*fide* Reinbold, 1893\] Germany (Niedersachsen), "Haec minutissima et nitidissima planta crescit in Ceramio virgato cum Conf. Mucor, " Jürgens decade 7, number 6 *Biddulphia pulchella* S.F. Gray \[*fide* Reinbold, 1893\] *Conferva biddulphia* *Conferva biddulphia* Dillwyn *Diatoma biddulphianum* Germany (Niedersachsen) Wangerooge, "Aliis Algis maritimis v. c. Ceramio violaceo adhaerens, haec Conferva a mari ad insulam Wangerogae ejicitur." Jürgens decade 10, number 9 *Conferva striatula* \[J.E. Smith\] *Diatoma arcuatum* *Grammonema striatulum* (Lyngbye) C. Agardh \[*fide* Reinbold, 1893\] *Striatella arcuata* Germany (Niedersachsen) Norderney Germany (Niedersachsen) Wangerooge, "Ad littora insularum Norderney et Wangeroge in ceramio violaceo et virgato parasitice radicans." Jürgens decade 11, number 7 *Diatoma fasciculataDiatoma fasciculatum* Agardh *Echinella fasciculata* Lyngbye *Synedra fasciculata* (C. Agardh) Kützing \[*fide* Reinbold, 1893\] Germany (Niedersachsen) Jever, "Ad littora dynastiae Jeverensis in ceramio virgato habitat." Jürgens decade 11, number 8 *Conferva implexa* \[cf.\] *Conferva orichalcea* Mertens Germany (Niedersachsen) Norderney, "Quo in itinere jucundissimo mihique utilissimo haec nova et perpulchra Alga in insula Norderney nobis sese obtulit." Jürgens decade 12, number 2 *Diatoma fenestratum* Lyngbye Germany (Niedersachsen) Wangerooge, "In Insula Wangeroge hanc Algam in Ulva compressa parasitice insidentem mens. Aug inveni." Jürgens decade 12, number 8 *Conferva obliquata* \[J.E. Smith\] *Diatoma obliquataDiatoma obliquatum* Lyngbye *Isthmia obliquata* *Isthmia nervosa* Kützing \[*fide* Reinbold, 1893\] Germany (Niedersachsen) Norderney, "Ad littora insulae Nordeney in apicibus Ceramii virgati parasietice insidens." Jürgens decade 13, number 7 *Achnanthes brevipes* C. Agardh \[*fide* Reinbold, 1893\] *Achnanthes longipesConferva armillaris* *Echinella stipitata* Lyngbye Germany (Niedersachsen) Friesische Inseln, "Ad littora insularum Frisicarum ceramio virgato et confervis insidentem hanc Algam inveni." Jürgens decade 13, number 8 *Diatoma lyngbyei* *Diatoma tenue* \[var.\] *marium* Lyngbye *Grammatophora marina (Lyngbye) Kützing* \[*fide* Reinbold, 1893\] Germany (Niedersachsen) Norderney Germany (Niedersachsen) Wangerooge, "Ad littora maris septentrionalis in insulis Norderney et Wangeroge Ceramio virgato insidentem observari hanc Algam." Jürgens decade 14, number 9 *Frustulia juergensii* *Echinella obtusa* Lyngbye Germany (Niedersachsen) Jever, "In fossa prope Jürgenshausen in dynastia Jeverana Ceramio dichtomo mihi haec Alga accurrebat." Jürgens decade 14, number 10 *Diatoma flabellatum* Jürgens *Echinella paradoxa* Lyngbye *Gloionema paradoxum* *Podosphenia communis* Heiberg \[*fide* Reinbold, 1893\] Germany (Niedersachsen), "Gastridio filiformi parasitica insidens. Febr." Jürgens decade 15, number 9 *Conferva pectinalis* O.F. Muller *Diatoma pectinalis* *Fragilaria pectinalis* Lyngbye \[as "*Fragillaria*"\] \[See note in Decade 18, number 12 on this F*ragilaria pectinalis.*\] Germany (Niedersachsen), "Ad plantas aquaticas in fossis." Jürgens decade 16, number 4 *Conferva floccosa* C. Agardh Germany (Niedersachsen), "In fossis, vere." Jürgens decade 16, number 7 *Echinella olivacea* Lyngbye *Meridion vernale* Germany (Niedersachsen), "In fossis, culmos plantarum aquaticarum circumdans, vere." Jürgens decade 16, number 9 *Conferva hiemalis* Roth \[as "*hyemalis*"\] *Melosira varians* C. Agardh \[*fide* Reinbold, 1893\] Germany (Niedersachsen) Norderney, "In insula Norderney in fossa prope der Batterie, mense Augusto." Jürgens decade 17, number 6 *Conferva punctalis* Dillwyn Germany (Niedersachsen), "In fossis, semel inveni." Jürgens decade 19, number 3 *Conferva striatula* \[J.E. Smith\] *Fragilaria striatula* \[as "*Fragillaria*"\] *Grammonema striatulum* (Lyngbye) C. Agardh \[*fide* Reinbold, 1893\] Germany (Niedersachsen) Wangerooge, "Ad littora insulae Wangeroge in Fuco vesiculoso parasitica." Jürgens decade 19, number 6 *Diatoma marinum* Lyngbye *Grammatophora marina* (Lyngbye) Kützing \[*fide* Reinbold, 1893\] Germany (Niedersachsen) Wangerooge, "Ad littora insulae Wangeroge prope der Schlenge orientem versus." Jürgens decade 19, number 9 *Echinella cuneata* Lyngbye *Licmophora juergensii* *Podosphenia communis* Heiberg \[*fide* Reinbold, 1893\] Germany (Niedersachsen) Baltrum Germany (Niedersachsen) Norderney Germany (Niedersachsen) Wangerooge, "Ad littora Insularum Wangeroge, Baltrum, Norderney. Fuco Plocamio insidens, rarius." Jürgens decade 19, number 10 --- Revised 19 August 2002, R. K. Edgar