Yellow hollyhock

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Yellow hollyhock
Yellow Hollyhock (Alcea rugosa)

Yellow Hollyhock ( Alcea rugosa )

Systematics
Eurosiden II
Order : Mallow-like (Malvales)
Family : Mallow family (Malvaceae)
Subfamily : Malvoideae
Genre : Hollyhocks ( Alcea )
Type : Yellow hollyhock
Scientific name
Alcea rugosa
Aleph.

The yellow hollyhock ( Alcea rugosa ), also called Russian hollyhock , is a species of the genus hollyhocks ( Alcea ) within the mallow family (Malvaceae).

description

Stalked leaf and five-fold flower

Vegetative characteristics

The yellow hollyhock grows as an herbaceous plant that can reach heights of up to 2 meters. It is similar to Alcea rosea , but has felty, shaggy stems that are covered with longer white trichomes . The leaves are divided into a petiole and a leaf blade. The blunt leaf blades are deeply five-lobed and irregularly notched. The leaf veins are strongly emphasized on the underside of the leaf.

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Generative characteristics

The hermaphroditic flowers are radial symmetry and five-fold with a double flower envelope . The five yellow to orange-yellow petals are up to 4.5 inches long.

The number of chromosomes is 2n = 42.

Others

The yellow hollyhock is not very susceptible to rust .

Occurrence

It originally comes from the Ukraine , southern Russia , Azerbaijan , Armenia or Georgia . It thrives there in dry valleys and on stony slopes.

Taxonomy

The first description of Alcea rugosa was in 1862 by Friedrich Alefeld in the Austrian Botanical Journal .

swell

  • Hans Simon (Ed.): The free-range ornamental shrubs. Manual and lexicon of garden perennials . Founded by Leo Jelitto, Wilhelm Schacht. 5th completely revised edition. 2 volumes. Eugen Ulmer, Stuttgart (Hohenheim) 2002, ISBN 3-8001-3265-6 .

Individual evidence

  1. ^ Alcea rugosa at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  2. ↑ Alcea in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved June 15, 2017.
  3. ↑ First description scanned at biodiversitylibrary.org .

Web links

Commons : Yellow Hollyhock ( Alcea rugosa )  - Album with pictures, videos and audio files