Introduction of Epilobium Herb in Epilobium sect:(25).Epilobium taiwanianum C.J. Chen.

Popular Herbs. ✵The article gives records of the herb (25).Epilobium taiwanianum C.J. Chen., its English name, Latin name, common names, property and flavor, its botanical source plant species, with a detailed introduction to the botanical features of this plant species, the growth characteristics, and ecological environment of this plant species.

Epilobium sect:(25).Epilobium taiwanianum C.J. Chen.

 Epilobium spp Introduction: Epilobium sect is a section in the Epilobium genus of the Onagraceae family (evening primrose family), perennial herbs, upright, ascending, or prostrate. Stems are cylindrical or quadrangular. Leaves are opposite (occasionally whorled) at least below inflorescence and alternate sparsely spirally (E. sinense H. Lev.). Flowers are actinomorphic, parallel to the stem axis when blooming; flower tube exists; petal apex is concave to deeply 2-lobed; stamens vary in length in 2 whorls, pollen grains are yellow, pollinated by quadruple pollen; style is always upright; stigma is usually entire, clavate to capitate, as long as or higher than stamens, sometimes 4-lobed and higher than stamens.

 There are about 150 species of plants in the Epilobium sect., these species are widely distributed in temperate regions of the world; there are 33 species in China, which are widely distributed throughout the country. The species introduced are:(1).Epilobium hirsutum L.,(2).Epilobium parviflorum Schreber.,(3).Epilobium wallichianum Hausskn.,(4).Epilobium kermodei Raven.,(5).Epilobium palustre L.,(6).Epilobium minutiflorum Hausskn.,(7).Epilobium anagallidifolium Lam.,(8).Epilobium roseum Schreb.,(8.1).Epilobium roseum Schreber subsp. subsessile (Boissier) Raven,(9).Epilobium tianschanicum Pavlov,(10).Epilobium amurense Hausskn.,(11).Epilobium amurense subsp. cephalostigma (Hausskn.) C.J.Chen.,(12).Epilobium tibetanum Hausskn.,(13).Epilobium platystigmatosum C.B.Rob.,(14).Epilobium sinense Lévl.,(15).Epilobium cylindricum D.Don.,(16).Epilobium brevifolium D.Don,(17).Epilobium pannosum Hausskn.,(18).Epilobium williamsii Raven.,(19).Epilobium sikkimense Hausskn.,(20).Epilobium gouldii Raven.,(21).Epilobium hohuanense S.S.Ying,(22).Epilobium royleanum Hausskn.,(23).Epilobium pyrricholophum Franch.et Savat.,(24).Epilobium nankotaizanense Yamamoto.,(25).Epilobium taiwanianum C.J.Chen.,(26).Epilobium pengii C.J. Chen.,(27).Epilobium clarkeanum Hausskn.,(28).Epilobium blinii Lévl.,(29).Epilobium fangii.,(30).Epilobium fastigiatoramosum Nakai.,(31).Epilobium subcoriaceum Hausskn.,(32).Epilobium kingdonii Raven.,(33).Epilobium ciliatum Raf..

(25).Epilobium taiwanianum C.J. Chen.


 Botanical description: Epilobium taiwanianum C.J. Chen is classified in the Epilobium genus, of the Onagraceae family., it is also known as Taiwan willow herb.

 Epilobium taiwanianum C.J. Chen is a perennial herb, nearly upright, often clumps; rhizomes are 1~6 cm long, overwintering succulent scales and root suckers emerge from the base of the stem, the next year, the scale leaves turn brown, coriaceous, grow densely at the base of the stem, imbricate arranged, narrowly obovate to spatulate (spoons-shaped), 3~10 mm long, 2.5~3 mm wide; stems are 7~25 cm high, 1~2 mm thick, unbranched or with few branches, pubescent around, without ridges;

 Flowers are upright; flower buds are ovate, 3~4 mm long, 2~2.5 mm in diameter, pubescent; the ovary is 1~2.4 cm long, covered with curly succulent hairs, sparsely mixed with glandular hairs; pedicels are 4~7 mm long, the flower tube is 0.6~1 mm long, 1.2~1.8 mm in diameter, flower throat is sparsely hairy; sepals are oblong-lanceolate, carinate (cariniform) in cross-section, 3~5 mm long, 0.8~1.2 mm wide, pubescent, petals are rose-purple, narrowly obovate, 4~6.5 mm long, 2~4 mm wide, apex concave is 1~1.5 mm deep; anthers are nearly oblong, 0.7~0.9 mm long, 0.6~0.7 mm wide; Filament outer wheel is 2.5~3 mm long, the inner wheel is 2~2.2 mm long; style is white, upright, 2.5~3.5 mm long, glabrous; stigma is capitate or broad stick.

 Capsular fruit is 2.5~5 cm long, 1~2 mm in diameter, pubescent; fruit pedicel is 0.5~1 cm long; seeds are narrowly obovate, 1.1~1.5 mm long, 0.45~0.6 mm in diameter, with a very short rostrum (beak) at the top, light brown, with inconspicuous papillae on the surface; tassels are white, 5~7 mm long, easy to fall off; its flowering period is from July to September, fruiting from August to December.

 Ecological environment: Epilobium taiwanianum C.J. Chen grows in alpine rocky beaches, wet gravel areas, and shady places at the edge of rare forests, 3,000~3,900 meters above sea level. Epilobium taiwanianum C.J. Chen is a unique plant in Taiwan, it only grows in Hsinchu, Yilan, Miaoli, Taichung, and Nantou of Taiwan. The type specimen was collected from Snow Mountain of Taichung.
 
 

 
  

 

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References:
  • 1.Introduction of Epilobium Herb in Epilobium sect:(25).Epilobium taiwanianum C.J. Chen.

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