Английская Википедия:Iris subg. Nepalensis

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Automatic taxobox

Iris subg. Nepalensis is one subgenus of Iris, also known as 'Himalayan irises'. It was formerly genus Junopsis.

The irises have fleshy-like roots very similar to a day lily (Hemerocallis). They are best grown in a semi-shady spot in a bulb frame. Most bulbs in the subgenus are found in the Himalayas and Yunnan region.[1]

Only four species are known.

Iris decora

This is the most known of the species.[2]

It has many synonyms: Evansia nepalensis (Klatt), Iris nepalensis (D.Don), Iris nepalensis var. khasiana (Baker), Iris sulcata (Wall.), Iris yunnanensis (H.Lév.), Junopsis decora (Wall.) Wern.Schulze, Neubeckia decora (Wall.) Klatt and Neubeckia sulcata (Klatt)[3]

It was first published in British Flower Garden Series 2, in 1829.[4] It was first described by Nathaniel Wallich in his book Plantae Asiaticae Rariores in 1830.[5] It was later published in then Journal of the Royal Horticultural Society in 1969.[4]

It is hardy to USDA Zone 3.[4] It also requires frequent watering while in growth.[1]

Sometimes it is confused with Iris leptophylla (in Iris subg. Scorpiris).[6]

It has a rhizome covered in bristly fibres.[4] It is similar in form to the roots of Hemerocallis.[2] It reaches a height of 10–30 cm tall.[4]

It has 3–7 flowers per stem,[7] in the summer, June in the UK.[2] which are approximately 4–5 cm in diameter.[4] They come in a range of colours between pale bluish lavender and deep reddish purple.[7][4][2] The perianth tube measures 3.5–5 cm. The falls are up to 3.5 cm long. The blade has an orange-yellow central ridge that becomes white or purple at the apex. It has a whitish claw with purple veins.[4]

The leaves reach up to 30 cm at flowering time and then grow up to 45–60 cm tall later,[7] growing to longer than the flowering stem.[4] The strongly ribbed leaves[4] can be 2–8 mm wide.[8][4]

Iris decora was found in 1832 on grassy hillsides on plateaus, open stony pastures, and cliffs at 2800–3100 m above sea level.[8] It can be found in the Himalayas from Kashmir to China.[4] In Sichuan, Xizang (Tibet), Yunnan, Bhutan, N India and Nepal of the Western Central Himalayas.[8]

A white-flowered form from Yunnan region has been described as Iris decora var. leucantha by D. Dong & Y. T. Zhao (Bull. Bot. Res., Harbin 18: 150.) in 1998.[8]

Iris colletti

It was found in 1909, in North Burma, Thailand, Tibet and the province of Yunnan and Sichuan (in China).[1][9]

It was named after Sir Henry Collett (1836–1901), who collected plants in most of those regions.[10]

It has been found growing in various habitats, including wood edges, clearings, shrubby areas,[11] and sunny grasslands.[9]

It can grow at altitudes of up to 3400 m above sea level.[10]

It has 3–7 lilac-blue flowers on a 5–15 cm tall stem.[1] The flower has a very long neck, similar to a crocus. It generally flowers in May – June. The flower has an orange caterpillar-like beard on the midrib. It also has ribbed, grey-green leaves which extend after blooming up to Шаблон:Convert.[10]

Two hybrids have been found: Iris collettii var. collettii and Iris collettii var. acaulis. Iris collettii var. acaulis (Noltie) was described in New Plantsman (magazine) in 1995. It was found at Шаблон:Convert above sea level, in the provinces of Sichuan and Yunnan in China.[8]

Iris staintonii

Originally found in 1974 in Nepal.[12] It normally has a single mauve flower (about 3 cm) with bearded fall and is marked with white.[13][6] It is deemed a rare plant in Nepal.[14] It was first published by Kanesuke Hara in Journal of Japanese Botany in 1974.[15]

It was given to Kew Gardens by an Oxford University team in 1992.[6] Other mentions.[13]

  • Hara, H. et al. 1978–1982. An enumeration of the flowering plants of Nepal.
  • Mathew, B. 1981. The Iris. 134.

Iris barbatula

A recent discovery, it was described by Henry John Noltie and K.Y.Guan in 1995 in the New Plantsman 2: 137,[16] and was collected from N.W. Yunnan.[6] It has been found in open grassy areas and forest clearings,[11] and found on grassy plateaus at Шаблон:Convert above sea level.[8] It has three long-tubed purple to dark-violet flowers, which are about 5 cm across, and has a short subterranean stem. Unusually, it also has a fimbriate (fringed), almost beard-like crest.[6] It flowers between May and July. It has leaves that grow 9–19 cm tall and 2–5 mm wide.[8] It tends to form small clumps of bulbs after several years.[11]

References

Шаблон:Reflist

Шаблон:Iris Шаблон:Taxonbar