Introduction of Epilobium Herb in Epilobium sect:(17).Epilobium pannosum Hausskn.
✵The article gives records of the herb (17).Epilobium pannosum Hausskn., 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:(17).Epilobium pannosum Hausskn.
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.
Botanical description: Epilobium pannosum Hausskn is classified in the Epilobium genus, of the Onagraceae family., it is also known as the stiff-haired willow herb or wirehaired willow herb. Its synonym is Epilobium khasianum, or Epilobium brevifolium subsp. pannosum.
Epilobium pannosum Hausskn is a perennial herb, with overwintering rosette buds growing underground or above the ground from the base of the stem. Each part is densely covered with filiform long coarse hairs. The stem is as high as 1.2 meters, the middle and upper parts are often branched, densely covered with villi, and sometimes the upper parts are covered with glandular hairs; Leaves are opposite, densely stacked, sessile, and the base is often somewhat stalked, oval, lanceolate or oval, 1~4.8 cm long, the apex is tapered, sharp or nearly blunt from top to bottom, the base is orbicular (subrotund), with fine teeth, and 5~8 pairs of lateral veins;
Flowers are pendulous or nearly upright, up to 1.7 cm long; Pedicel is 1~2 cm long; The flower tube is 0.8~1.2 mm long, with a ring of long hair at the throat; Sepals are oblong-lanceolate, 5.5~8 mm long, densely covered with villi and glandular hairs; Petals are pink or rose-colored, broadly inverted cordate, 0.8~16 cm long, concave apex; The ovary is 2~3.5 cm long, densely covered with villi and glandular hairs, the style is white, nearly glabrous or sparsely hairy at the lower part, the stigma is cylindrical or broadly clavate, 1.5~3.5 mm high, obviously higher than the stamens.
The capsular fruit is 3.5~6.5 cm long, with villi and glandular hairs; The stalk length is 1.2~2.8 cm; Seeds are broadly obovoid, 0.9~1 mm long, papillose; With a short rostrum (beak) at the top; The tassel is gray, 7~8 mm long and easy to fall off; Its flowering period is from July to October and fruiting from September to November.
Ecological environment: Epilobium pannosum Hausskn grows in wet places beside grass slopes, valleys, and gullies, at altitudes of 760~1,500~2,200 meters. The plant grows in the west south area of China.
This species, Epilobium pannosum Hausskn, grows in the eastern Himalayas and the southern part of the Hengduan Mountains, and is similar to Epilobium brevifolium D.Don., so Peter H. Raven once classified this species as a subspecies of the latter. However, this species has a peculiar indumentum, dense arrangement of leaves, long clavate stigma, high stamens sticking out during flowering, its flowering and fruiting periods are late, and other unique characteristics, so it should be restored as an independent species naturally.
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1.Introduction of Epilobium Herb in Epilobium sect:(17).Epilobium pannosum Hausskn.
✵The article gives records of the herb (17).Epilobium pannosum Hausskn., 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.
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.
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