Norican clover
| Norican clover | ||||||||||||
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Norian clover ( Trifolium noricum ), illustration |
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| Trifolium noricum | ||||||||||||
| Wulfen |
The Norian clover ( Trifolium noricum ) is a species of plant from the genus clover ( Trifolium ) that occurs in the alpine altitude of the Eastern Alps, the Apennines and the Illyrian mountains . He is in the genus in the section Trifolium , subsection Trifolium asked.
features
The Norian clover is a perennial , herbaceous plant , a hemicryptophyte . The main axes are prostrate, the plants form lawns and reach heights of growth of 8 to 20 cm. The stems are usually upright, are often unbranched and have protruding, fox-red hair. The leaves are mainly basal, have long stems . There are 2 to 3 stem leaves that are almost sessile. All leaves are fingered in three digits. The leaflets are 10 to 15 mm long, 6 to 8 mm wide, and have an elongated-lanceolate to elliptical leaf shape . The leaf margin is finely toothed to entire, the veins are indistinct, the underside of the leaf is shaggy hairy. The stipules are membranous, whitish and far fused with the petiole. The non-fused part is triangular-egg-shaped and gradually runs out into the long tip. The outer surface is hairy.
The flowers are in spherical heads that are 2.5 to 4 cm wide. The heads are single and terminal, nod at the beginning and surrounded by 1 to 2 small leaves at the base. The flowers are sessile. Your calyx is significantly shorter than the crown, is protruding coarse hairy. There are long, shaggy hairy calluses in the throat. The calyx is not open when the fruit is ripe. The calyx teeth are linear to subulate, separated by wide bays. They are finely ciliated and about the same length as the calyx tube. All calyx teeth are almost the same length, but the lowest one is up to 1.5 times as long as the rest. The crown is white to yellowish white, around 15 mm long and not sloping. The flag is around 3 times as long as the goblet, also longer than the wings and the shuttle, and is edged. The flower is a butterfly flower with a folding mechanism. Flowering time is June to August. The fruit is a single-seeded pod that pops open on the ventral side (ventrally).
Distribution and locations
The Noric clover occurs in the southern Eastern Alps , in the Apennines and in the Illyrian mountains. The area includes parts of Switzerland, Italy, Austria, Slovenia, the former Yugoslavia, Albania and Greece. In Austria it occurs only in Carinthia in the Carnic Alps and possibly on the Dobratsch and is considered to be potentially endangered.
The Noric clover grows in the alpine altitudes between 1900 and 2600 m above sea level in mats, pasture lawns and on scree on limestone.
supporting documents
- Siegmund Seybold (Ed.): Schmeil-Fitschen interactive. (CD-Rom), Quelle & Meyer, Wiebelsheim 2001/2002, ISBN 3-494-01327-6 .
Individual evidence
- ↑ Species entry in the ILDIS database , accessed September 14, 2008.
- ^ Manfred A. Fischer , Karl Oswald, Wolfgang Adler: Excursion flora for Austria, Liechtenstein and South Tyrol. 3rd, improved edition. State of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2008, ISBN 978-3-85474-187-9 .
