Galanthus samothracicus
| Galanthus samothracicus | ||||||||||||
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| Galanthus samothracicus | ||||||||||||
| Kit Tan & Burkhard Biel |
Galanthus samothracicus is a species of snowdrop ( Galanthus ) in the Amaryllis family (Amaryllidaceae). The species is only known from the Greek Aegean island of Samothraki and was first described in 2014.
description
Galanthus samothracicus is a perennial plant . The onion is almost spherical to ellipsoid and measures 2 to 2.5 × 1.5 to 2 centimeters. The outer onion skins are thin, paper-like and greyish-brown. The basal leaf sheath is tubular, whitish and measures 2 to 5 × 0.3 to 0.7 centimeters. The bud systems are flattened.
Two to three leaves are formed in winter and spring . These are basal, linear-upright lanceolate and initially upright, but gradually bend downwards over time. They usually measure 26 to 25 (less often from 9 and up to 34) × 0.4 to 1.2 centimeters. The leaves are slightly wider in the middle than in the upper third. The tip of the leaf is pointed to blunt and whitish. The leaves are initially blue-green, the color changes over time towards green. The upper side of the leaf is slightly compressed-concave with a faint or barely visible pale green central stripe. The surface is smooth with a conspicuous central rib on the underside. The leaf margins are curled down a little.
Usually there is only one flower stem , rarely two. This is upright during flowering. It is rarely from 7, usually 16 to 31 centimeters long, longer than the leaves, almost cylindrical and green. The spathe is about 3.5 x 0.4 cm, translucent and membranous. The flower stalk is 20 to 40 (rarely from 15 or up to 50) millimeters long. The flowers are arranged individually, one per stem. They are nodding and fragrant. The outer bracts are (rarely from 16) 20 to 26 × 6.0 to 9.0 millimeters in size, obverse-elliptical and white. Your nail takes up a third of the length. The inner bracts are smaller, but more than half as long as the outer ones. They are (rarely from 8) 11 to 12 × 4 to 6 (rarely up to 8.5) millimeters in size, obverse-shaped, white and striped dark green on the inside. Each of the inner bracts has a bulge and a single, broad, green mark on its outside at its tip. Usually this time it is enlarged on both sides of the bay. It's never narrow V or U-shaped. The stamens are grown at their lower end, pointed and yellow. The ovary is triple, at flowering time 5 to 6 × about 5 millimeters in size and dark green. The capsules are three-chambered, obovate, (rarely from 6) 9.0 to 14.5 × 6.0 to 10.5 millimeters in size and have rounded edges. The seeds are asymmetrically oblong-obovate, 2.2 to 3.6 × 1.3 to 1.6 millimeters in size and have strophiols . The seed coat is reticulated and turns dark brown when ripe.
The number of chromosomes is 2n = 24, the genome size 2C = 51.42 to 52.72 pg.
The flowering time is in the natural habitat in January and February, in the culture in Central Europe, however, it extends from mid-December to the end of February.
Occurrence
Galanthus samothracicus is on the north of the Aegean Sea lying, belonging to Greece island Samothrace endemic . The snowdrops grow in the lowlands between the coast and the foot of the Fengari at altitudes of 5 to 80 meters, sometimes up to 100 meters, on seasonally humid to swampy locations near flowing waters and springs on humus-rich soils. The following species or subspecies were found associated with Galanthus samothracicus : Anemone pavonina , Arum elongatum , Cardamine graeca , Crepis hellenica , Doronicum orientale , Erodium cicutarium , Erophila verna , Geranium pusillum , Geranium robertianum subsp. purpureum , Geranium rotundifolium , Hedera helix , Juncus effusus , Lamium garganicum subsp. striatum , Lamium purpureum , aestivum Leucojum , Luzula forsteri , Melanortocarya obtusifolia , Muscari neglectum , ornithogalum spp., Ranunculus ficaria , Saxifraga hederacea , Scilla bifolia , Senecio vernalis , Senecio vulgaris , Sternbergia lutea , Scandix pecten-veneris , Selaginella denticulata , Smilax excelsa , Taraxacum spp., Theligonum cynocrambe , Veronica cymbalaria , Viola odorata .
Botanical history
In April 2006, during a floristic exploration of the island of Samothraki by Burkhard Biel, some fruiting snowdrops were discovered. The location was northwest of Makrilies in a plane tree forest on the banks of the Xiropotamos . In the years 2009 and 2011, other places where snowdrops grew on the island were found. These are in the area of Xiropotamos in the southwest of Samothraki, at Therma in the north and at Anomeria in the northeast. From morphological and genetic studies (including the size of the genome ) it was concluded that the snowdrops discovered on the island of Samothrace are still an undescribed species. In 2014, they were by Kit Tan and Burkhard Biel as a separate species Galanthus samothracicus first described .
Individual evidence
- ↑ a b c d e f g Kit Tan, Burkhard Biel, Sonja Siljak-Yakovlev: Galanthus samothracicus (Amaryllidaceae) from the island of Samothraki, northeastern Greece . Phytologia Balcanica 20 (1), 2014, pp. 65-70. ( online )
Web links
- Tom Mitchell: Galanthus samothracicus . In: www.revolution-snowdrops.co.uk , accessed on March 21, 2017. Report on an excursion to the snowdrops on Samothrace in January 2016, including pictures of the plants