Meadow diamonds

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Meadow diamonds
Thalictrum tuberosum

Thalictrum tuberosum

Order : Buttercups (Ranunculales)
Family : Buttercup Family (Ranunculaceae)
Subfamily : Isopyroideae
Tribe : Isopyreae
Sub tribus : Thalictrinae
Genre : Meadow diamonds
Scientific name of the  sub-tribus
Scientific name of the  genus

The meadow rue ( Thalictrum ) is the only genus of the Untertribus Thalictrinae within the buttercup family (Ranunculaceae). It occurs almost worldwide.


Illustration of the yellow meadow rue ( Thalictrum flavum )
Detail of an inflorescence of the Akeleiblättrigen meadow rue ( Thalictrum aquilegiifolium L.) with flowers in detail

Appearance and leaves

The meadow rue species grow as perennial herbaceous plants . They form woody rhizomes or tubers as persistence organs.

The leaves are basal and arranged alternately on the stem . The lower leaves are stalked and the top are sessile. The leaf blades are one to four-fold triple or one to four-fold pinnate. Rarely, for example in Thalictrum rotundifolium , the leaf blade is simple. The sections or leaflets are heart-shaped-kidney-shaped, obovate, lanceolate or linear, sometimes three- or multi-lobed, with a smooth or notched edge. Stipules can be present, but also absent.

Inflorescences and flowers

The flowers stand together singly or in pairs to two hundred in mostly terminal, rarely lateral, paniculate , racemose , umbrella-racemic , umbellate or monochasial zymous inflorescences; they can be up to 41 cm tall. Foliage-like bracts , if present, stand in pairs to nine in a whorl; they are not close to the flowers.

The flowers are hermaphroditic or unisexual. In many species all flowers are hermaphroditic, there are also species in which hermaphroditic and unisexual flowers occur on one specimen ( Thalictrum smithii ). Some species have only unisexual flowers, there are monoecious ( monoecious ) and dioecious ( dioecious , Thalictrum dioicum , Thalictrum revolutum ) species.

The flowers are radial symmetry . The inflorescence is simple and consists of four to ten bracts. The white to greenish-yellow or purple-colored bracts are lanceolate to kidney or spatula-shaped with a length of usually 1 to 18 mm. They fall off early, often during the anthesis . There are no petals or nectar leaves. The 7 to 30 fertile stamens are longer than the bracts. The stamens are thread-like to club-shaped or swollen towards the tip. Each flower contains 1 to 50 (rarely up to 70) free (not overgrown) carpels . Each carpel contains only one ovule . A stylus is usually available or may be missing.

Fruit cluster of Thalictrum pubescens with seed pods containing unripe nuts


The collective fruits contain a few to many stalked or unskilled nuts . The nuts are egg-shaped to obovate, sickle-shaped or disc-shaped, laterally with distinct nerves or ribs. They can end in a straight or curled beak up to 4 mm long.

Ingredients and chromosome numbers

Cyanogenic glycosides occur in the genus . The basic chromosome number is x = 7.


The genus Thalictrum is found almost worldwide, mainly in temperate areas . In North America, about 22 species are native. There are about 76 species in China , 49 of them only there. There are around 15 species in Europe.

The meadow rue species in Central Europe are:


The genus Thalictrum was established in 1753 by Carl von Linné in Species Plantarum . Type species is Thalictrum foetidum L. Synonyms for Thalictrum L. are: Anemonella Spach , Piuttia Mattei , Physocarpum Berchtold & J.Presl , Praticola Ehrhart , Ruprechtia Opiz (1852) non CAMeyer , Schlagintweitiella Ulbr. , Stipularia Delpino , Syndesmon (Hoffmanns. Ex Endl.) Britton , Tripterium Berchtold & J.Presl .

The genus Thalictrum is the only genus of the Subtribus Thalictrinae from the Isopyreae tribe in the Isopyroideae subfamily within the Ranunculaceae family .

Inflorescence of Thalictrum dioicum
Inflorescence of Thalictrum fendleri
Habitus and inflorescence of Thalictrum ichangense var. Coreanum
Inflorescence of Thalictrum delavayi
Habitus and inflorescence of Thalictrum kiusianum
Habitus and inflorescence of Thalictrum pubescens
Inflorescence of the blue-green meadow rue ( Thalictrum speciosissimum )
Habitus and flowers of the diamond anemone ( Thalictrum thalictroides )

There are around 120 to 200 types of Thalictrum (selection):


  • Marilyn M. Park, Dennis Festerling Jr .: Thalictrum. In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico . Volume 3: Magnoliophyta: Magnoliidae and Hamamelidae . Oxford University Press, New York / Oxford a. a. 1997, ISBN 0-19-511246-6 , pp. 258-271 (English). on-line. , (Section Description, System and Occurrence).
  • Fu Dezhi, Zhu Guanghua: Thalictrum. In: Wu Zhengyi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 6: Caryophyllaceae through Lardizabalaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2001, ISBN 1-930723-05-9 , pp. 282-302 (English). , online (section Description and Distribution).
  • Eckehart J. Jäger, Friedrich Ebel, Peter Hanelt, Gerd K. Müller: Excursion flora from Germany . Volume 5. Herbaceous ornamental and useful plants. Spectrum Academic Publishing House. Berlin, Heidelberg 2008. ISBN 978-3-8274-0918-8
  • Walter Erhardt u. a .: The big pikeperch. Encyclopedia of Plant Names . Volume 2. Verlag Eugen Ulmer, Stuttgart 2008. ISBN 978-3-8001-5406-7
  • Jaakko Jalas, Juha Suominen: Atlas florae europaeae . Volume 8 (Nymphaeaceae to Ranunculaceae). Page 236-250, Helsinki 1989. ISBN 951-9108-07-6
  • Werner Greuter , HM Burdet, G. Long: "MED Checklist". Volume 4, Conservatoire et Jardin botaniques, Genève 1989. ISBN 2-8277-0154-5

Individual evidence

  1. ^ TG Tutin, NA Burges, AO Chater, JR Edmondson, VH Heywood, DM Moore, DH Valentine, SM Walters, DA Webb (eds.): Flora Europaea . 2nd, revised edition. Volume 1: Psilotaceae to Platanaceae . Cambridge University Press, Cambridge / New York / Melbourne 1993, ISBN 0-521-41007-X , pp. 290–292 (English, limited preview in Google Book Search).
  2. ^ Siegmund Seybold : The flora of Germany and the neighboring countries. A book for identifying all wild and frequently cultivated vascular plants . Founded by Otto Schmeil , Jost Fitschen . 95th completely revised and expanded edition. Quelle & Meyer, Wiebelsheim 2011, ISBN 978-3-494-01498-2 , p.  383-384 .
  3. Carl von Linné: Species Plantarum. Volume 1, Impensis Laurentii Salvii, Holmiae 1753, p. 545, digitizedhttp: //vorlage_digitalisat.test/ IA% 3D ~ MDZ% 3D% 0A ~ SZ% 3D ~ double-sided% 3D ~ LT% 3D ~ PUR% 3D
  4. ^ A b Thalictrum in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved June 14, 2011
  5. Entry in Tropicos . Retrieved June 14, 2011.
  6. Evaluation of valid species at The Plantlist . Retrieved June 14, 2011.
  7. a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi bj bk bl bm bn bo Fu Dezhi: Thalictrum . In: Flora of China, vol. 6, Ranunculaceae. Thalictrum
  8. a b c d e f g h i j Marilyn M. Park & ​​Dennis Festerling Jr .: Thalictrum Linnaeus. In: Flora of North America, vol. 3. [1] .
  9. Ralf Hand: Revision of the species of Thalictrum subsectio Thalictrum (Ranunculaceae) occurring in Europe. In: Botany and Nature Conservation Hessen, supplement. Volume 9, 2001, pp. 1–358 (dissertation at the Free University of Berlin), online .

Web links

Commons : Meadow Rue ( Thalictrum )  - Collection of images, videos and audio files