Rosularia

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Rosularia
Ornithogalopsis section: Rosularia platyphylla

Ornithogalopsis section : Rosularia platyphylla

Systematics
Nuclear eudicotyledons
Order : Saxifragales (Saxifragales)
Family : Thick-leaf family (Crassulaceae)
Subfamily : Sempervivoideae
Tribe : Sedeae
Genre : Rosularia
Scientific name
Rosularia
( DC. ) Stapf

Rosularia is a genus of plants fromthe thick-leaf family (Crassulaceae). The botanical name of the genus is derived from the Latin word "rosula" for small rose and refers to the leaves united to form rosettes.

description

The species of the genus Rosularia are dwarf, usually perennial , herbaceous , often aromatic, bald or glandular hairy plants. Their roots are either fibrous or thickened taproots, or they are caudiciform and swollen. The flattened or spherical rosettes are sessile and rarely on short shoots . They are solitary or have sitting or prostrate and elongated runners. The more or less succulent, flat or keeled leaves are elongated to broadly spatulate. Their leaf margins are entire, glandular hairy and bristled or finely toothed.

The lateral or terminal inflorescence is erect or prostrate. The urn-, tube- or funnel-shaped flowers are narrow to broad, bell-shaped or star-shaped. They are seated, but more often also have peduncles. The flowers are five or five to nine-fold and obdiplostemon . The petals are fused together on a tenth to three quarters. They are white with green or pink to red veins or light yellow, pink, pink-purple or a little pink-brown. The stamens are shorter than the petals and fused with them at the base.

The fruit is an upright follicle fruit . The light to dark brown, elongated ellipsoidal seeds contained therein are 0.5 to 1.3 millimeters in size.

Rosularia section : Rosularia sempervivum

Systematics and distribution

The genus Rosularia is common in the eastern Mediterranean , Asia Minor , the Middle East , the Karakorum Mountains and the Altai Mountains.

The first description as a section of the genus Umbilicus was made by Augustin-Pyrame de Candolle in 1828. Otto Stapf raised the section to the rank of a genus in 1923. According to Henk 't Hart (1944–2000) the genus Rosularia is divided into two sections with the following species:

  • Section Ornithogalopsis A. Berger
    • Rosularia adenotricha (Wall. Ex Edgew.) C.-A. Jansson , home: Himalaya; with the subspecies:
      • Rosularia adenotricha subsp. adenotricha
      • Rosularia adenotricha subsp. viguieri (Raymond-Hamet) Jansson
    • Rosularia alpestris (Kar. & Kir.) Boriss. : It occurs in Russia and in the Chinese provinces of Xinjiang and Xizang at altitudes between 1500 and 5000 meters above sea level. With the subspecies:
      • Rosularia alpestris subsp. alpestris
      • Rosularia alpestris subsp. marnieri (Raymond-Hamet ex H. Ohba) Eggli
    • Rosularia glabra (Regel & Winkl.) A. Berger
    • Rosularia platyphylla (Schrenk) A. Berger : It occurs in Kazakhstan, Kyrgyzstan and the Chinese province of Xinjiang at altitudes between 2200 and 2800 meters above sea level.
    • Rosularia radicosa (Boiss. & Hohen.) Eggli

The Flora of China also distinguishes another species:

proof

literature

Individual evidence

  1. ^ Prodromus Systematis Naturalis Regni Vegetabilis . Volume 3, pp. 399, 1828
  2. ↑ Botanical Magazine; or, Flower-Garden Displayed . Volume 149, plate 8985, London 1923
  3. ↑ Henk 't Hart: Rosularia . In: Urs Eggli : Succulents Lexicon Volume 4. Crassulaceae (thick-leaf plants) . 2003, pp. 236-242
  4. ↑ a b c Kunjun Fu, Hideaki Ohba & Michael G. Gilbert: Rosularia . In: Flora of China, vol. 8, Crassulaceae. Rosularia

further reading

  • Urs Eggli : A monographic study of the genus Rosularia. (Crassulaceae) . Supplement in Bradleya . Volume 6. pp. 1-118, 1988.

Web links

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