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  A Guide to Species Irises: Their Identification and Cultivation - Google Books

  https://books.google.de/books?id=pL6uPLo7l2gC

  This volume was first published in 1997, providing a comprehensive, botanically detailed survey of this beautiful group of plants since publication of The Genus Iris by W. R. Dykes. Following the pattern of the original Dykes monograph, botanical details,…

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  Mountain Flora of Greece - P. Arne K. Strid - Google Books

  https://books.google.de/books?id=MvY8AAAAIAAJ

  The Greek mountain region is well known amongst botanists for its rich flora and high proportion of endemic species, but there has been no recent detailed Greek flora. This is the first of two volumes produced by a team of some twenty-five botanists from…

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  Angiosperm families - Labiatae Juss.

  http://www.delta-intkey.com/angio/www/labiatae.htm

  Description of Labiatae Juss., generated from a DELTA database.

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  Deutsche Biographie - Sorger, Friederike

  http://www.deutsche-biographie.de/sfz123020.html

  Deutsche Biographie

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  Revision der Gattung Halothamnus (Chenopodiaceae) — Schweizerbart science publishers

  http://www.schweizerbart.de/pubs/isbn/es/bibliothec-3510480147-desc.html

  Keine Beschreibung vorhanden.

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  Flowering Plants. Monocotyledons: Alismatanae and Commelinanae (except ... - Google Books

  https://books.google.de/books?id=bNQDsSmx2roC

  When Rolf Dahlgren and I embarked on preparing this book series, Rolf took prime responsibility for monocotyledons, which had interested him for a long time. After finishing his comparative study and family classification of the monocots, he devoted much…

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  Flowering Plants. Monocotyledons: Lilianae (except Orchidaceae) - Google Books

  https://books.google.de/books?id=FyPVYzL76sMC

  When Rolf Dahlgren and I embarked on preparing this book series, Rolf took prime responsibility for monocotyledons, which had interested him for a long time. After finishing his comparative study and family classification of the mono cots, he devoted much…

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  Familie Asteraceae MARTYNOV [= Compositae GISEKE] (Korbblütengewächse)

  http://www.pharmakobotanik.de/systematik/5_famili/astera-1.htm

  Keine Beschreibung vorhanden.

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  Botanik online: Bestimmungsbuch - Merkmale - Blüten

  http://www1.biologie.uni-hamburg.de/b-online/d02/02d.htm

  Keine Beschreibung vorhanden.

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  Flora of North America: North of Mexico Volume 22: Magnoliophyta ... - Google Books

  https://books.google.de/books?id=gJr4UGizRxAC

  To be published in 14 volumes over the next 12 years, this long-awaited synoptic compendium represents the first and only comprehensive taxonomic guide to the extraordinary diversity of plant life blanketing our continent north of Mexico--including…

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