Record sheets

from Wikipedia, the free encyclopedia
Record sheets
Chestnut-leaved record sheet (Rodgersia aesculifolia)

Chestnut-leaved record sheet ( Rodgersia aesculifolia )

Systematics
Class : Bedecktsamer (Magnoliopsida)
Eudicotyledons
Nuclear eudicotyledons
Order : Saxifragales (Saxifragales)
Family : Saxifragaceae (Saxifragaceae)
Genre : Record sheets
Scientific name
Rodgersia
A.Gray

Record sheets ( Rodgersia ) is a plant genus in the family of the Saxifragaceae (Saxifragaceae). The approximately five species occur in eastern Asia and thrive mainly in the Himalayas and adjacent high-altitude areas.

description

Sawn edge of the fingered leaf of the pedunculated record sheet ( Rodgersia podophylla ).

Vegetative characteristics

Rodgersia species grow as large, perennial herbaceous plants . They form creeping, transversely elongated, scaly rhizomes as persistence organs, but not stolons . The large leaves are divided into a petiole and a leaf blade. The leaf stalks are relatively long. The pinnately veined leaf blades are usually composed of three to nine, rarely ten leaf pinna-shaped leaves. The almost sessile leaflets end in a point and have a clearly serrated edge .

Generative characteristics

Section of an inflorescence of the pedunculated record sheet ( Rodgersia podophylla ).

In a rispigen from zymösen composite part inflorescences total inflorescence stand together many flowers without support or cover sheets. The relatively small flowers are hermaphroditic and usually five-fold. The mostly five (four to seven) spread sepals are white or pink to red. There are usually no petals , rarely one, two or five are observed. There are one or two circles with usually five, rarely seven stamens each. Two or three carpels are at a nearly constant top up rarely under almost constant, two to dreikammerigen ovary grown. There are many ovules . There are two or three free pens available.

The double or triple capsule fruits contain many seeds.

Chromosome number

The basic chromosome number is x = 15. Only Rodgersia podophylla is diploid and alone forms the Rodgersia section , but the other four species are tetraploid and together form the Sambucifolia J.T.Pan section .

Systematics and distribution

Rodgersia species are only found in eastern Asia, mainly in the Himalayas and adjacent high-lying areas. All five types are also found in China .

The genus Rodgersia was first published in 1858 by Asa Gray in Memoirs of the American Academy of Arts and Science , Volume 6, Part 1, p. 389. Type species is Rodgersia podophylla A. Gray.

The genus name Rodgersia honors US Admiral John Rodgers , the leader of the expedition in which Rodgersia podophylla was found in the 1850s. Specimens of Rodgersia podophylla have been shown in the USA since 1871 and the first specimen bloomed in St. Petersburg in 1878. The last species to be described was Rodgersia nepalensis in 1966. The revision of Pan Jin-tang 1994 still reflects the current state of science.

Habitus and inflorescence of the pedunculated record sheet ( Rodgersia podophylla )
Habitus and inflorescence of the elder-leaved record leaf ( Rodgersia sambucifolia ) cultivar 'Superba'

The genus Rodgersia is divided into two sections and contains five species. Listed here with all varieties after the revision of Pan Jin-tang in 1994:

  • Rodgersia Section : It contains only one species:
  • Section Sambucifolia J.T.Pan : It contains four species:
    • Chestnut-leaved record sheet ( Rodgersia aesculifolia Batalin ): It thrives in forests and on the edges of forests, bushes, meadows and in crevices at altitudes of 1100 to 3800 meters in Myanmar and the Chinese provinces of southeastern Gansu , Hebei , western Henan , western Hubei , southern Ningxia , Shaanxi , Sichuan , Xizang , Yunnan with two varieties:
      • Rodgersia aesculifolia Batalin var. Aesculifolia
      • Rodgersia aesculifolia var. Henrici (Franchet) CYWu ex JTPan
    • Rodgersia nepalensis Cope ex Cullen : It only thrives at altitudes of 2600 to 3300 meters in the eastern Himalayas (eastern Nepal and Sikkim) and southern Tibet .
    • Fiederblättriges record sheet ( Rodgersia pinnata Franchet ): It thrives in forests and on forest edges, bushes, on shady grassy slopes, alpine mats and in crevices at altitudes of 2000 to 3800 meters in Guizhou, in the eastern and southern Sichuan and in Yunnan with two varieties.
      • Rodgersia pinnata Franchet var. Pinnata
      • Rodgersia pinnata var. Strigosa J.T. Pan
    • Elder-leaved record sheet ( Rodgersia sambucifolia Hemsley ): It thrives in forests, bushes, meadows and in crevices at altitudes of 1,800 to 3,700 meters in western Guizhou, southwestern Sichuan and northern Yunnan with two varieties:
      • Rodgersia sambucifolia var. Estrigosa J.T. Pan
      • Rodgersia sambucifolia J.T. Pan var. Sambucifolia

There is a horticultural hybrid : Rodgersia × purdomii hort. from Rodgersia aesculifolia × Rodgersia pinnata .

use

All species and some cultivars are used as large ornamental plants in the temperate areas for parks and gardens.

Some Rodgersia varieties are: 'Atlasvlinder', 'Badenweiler', 'Blickfang', 'Bloody Mary', 'Borodin', 'Cally Strain', 'Dark Pokers',' The Graceful ',' The Beautiful ',' The Proud ',' Eichkatzl ',' Ivory Tower ',' Fascination ',' Grizzly Bear ',' Hercules', 'Ideal', 'Irish Bronze', 'Joop Ploeger', 'Koriata', 'Kupfermond', 'La Blanche' , 'May green', 'Parasol', 'Reinecke Fuchs', 'Rosenlicht', 'Rosenzipfel', 'Red Tower', 'Red Dwarf', 'Redhead'.

Little is known about further human use. There have been reports of eating young leaves of Rodgersia podophylla .

swell

Individual evidence

  1. ^ A b c Pan Jin-tang: Phylogeny Classification and Geographic Distribution of Rodgersia Gray , in Acta Phytotaxonomica Sinica , 1994, 32 (4), pp. 316-327: PDF-Online.
  2. ^ Asa Gray: Memoirs of the American Academy of Arts and Science , Volume 6, Part 1, 1858. P. 389 scanned at biodiversitylibrary.org.
  3. ↑ a b c Entry in The Saxifrage Society .
  4. ↑ Rodgersia nepalensis in Annotated Checklist of the Flowering Plants of Nepal .
  5. ↑ Rodgersia podophylla at Plants For A Future

Web links

Commons : Record sheets ( Rodgersia )  - collection of images, videos and audio files