Hieracium regulianum
| Hieracium regulianum | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Hieracium regulianum | ||||||||||||
| tooth |
Hieracium regelianum is a plant from the genus of hawkweed ( Hieracium ) within the family of Compositae (Asteraceae). It occurs in Central Asia.
description
Vegetative characteristics
Hieracium regulianum is a perennial herbaceous plant that reaches heights of 30 to 100 centimeters. It forms short, thick rhizomes . The upright stems are mostly branched in the upper part and stand together individually or in small numbers in clusters. They are densely covered with brown, rough hairs at the base and with hairless or glandular to star-shaped hairs at the top.
At the base of the stem there are several basal stalked leaves which, like the leaves in the lower stem area, fall off after the flowering period, while on the middle and upper stem there are also several sessile, more or less stem-embracing leaves. The leaf blade is at a length of 4-9 cm and a width of 1-3 centimeters from egg-shaped ovate over-lanceolate and elliptical-lanceolate to approximately elliptical with geöhrter Spreitenbasis and pointed Spreitenspitze. The edges of the spread are entire, finely toothed or sparsely ciliate. The upper side of the leaf is bare while the underside of the leaf is sparsely covered with rough hair.
Generative characteristics
At least in Xinjiang, the flowering period and fruit ripeness extend from July to September. The umbrella-like to paniculate total inflorescence contains some cup-shaped partial inflorescences. With a diameter of about 1 centimeter, the bell-shaped involucre contains three rows of more or less dark green and hairy bracts on the underside . The outer bracts are about 2 millimeters long and about 0.7 millimeters wide, linear-lanceolate, while the likewise linear-lanceolate middle bracts are about 4 millimeters long and 1 millimeter wide and the wide-linear inner bracts are about 11 Millimeters long and 1.2 millimeters wide. The flower heads contain several yellow ray-florets .
The dark brown achenes are cylindrical with a length of about 0.4 centimeters and have eight to ten ribs. The pappus consists of several dirty white bristle hairs, which are about 0.6 inches long.
Occurrence
The natural range of Hieracium Regelianum is in Central Asia . It includes Kazakhstan and the Uyghur Autonomous Region Xinjiang .
Hieracium regulianum thrives in Xinjiang in clearings in forests at altitudes of 1700 to 2000 meters.
Taxonomy
It was first described as Hieracium Regelianum in 1922 by Karl Hermann Zahn in Adolf Engler's Das Pflanzenreich , number 79, page 936.
swell
- Zhu Shi, Günter Gottschlich: Asteraceae . Hieracium. In: Wu Zheng-Yi, Peter H. Raven (Ed.): Flora of China . Asteraceae. Volume 20-21. Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 2011, Hieracium regulianum , p. 352 (English, " Hieracium Regelianum - Online " - this work is online with the same text). (Sections Description, Occurrence and Systematics)
Individual evidence
- ↑ a b c d e f Zhu Shi, Günter Gottschlich: Asteraceae . Hieracium. In: Wu Zheng-Yi, Peter H. Raven (Ed.): Flora of China . Asteraceae. Volume 20-21. Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 2011, Hieracium regulianum , p. 352 (English, Hieracium Regelianum Zahn in Engler - Online - this work is online with the same text). (Sections Description, Occurrence and Systematics)
- ↑ Hieracium Regelianum at Tropicos.org. Missouri Botanical Garden, St. Louis, Retrieved August 8, 2017.