Chilean stone slice

from Wikipedia, the free encyclopedia
Chilean stone slice
Branches with leaves and male cones of Podocarpus nubigenus

Branches with leaves and male cones of Podocarpus nubigenus

Systematics
Order : Conifers (Coniferales)
Family : Stonecaceae (Podocarpaceae)
Genre : Stone slices ( Podocarpus )
Subgenus : Podocarpus
Section : Australis
Type : Chilean stone slice
Scientific name
Podocarpus nubigenus
Lindl.

The Chilean stone ices ( Podocarpus nubigenus ), also called coastal stone ices, is a species of the genus stone ices ( Podocarpus ) in the stone ices family (Podocarpaceae).

description

Young specimen

Vegetative characteristics

The Chilean stone slice is an evergreen, slow-growing shrub or tree that reaches heights of growth of up to 25 meters or more and chest height diameters (DBH) of up to 2 meters. The upright trunk is straight, cylindrical and can be knot-free up to a height of 15 meters. The trim-colored or purple-brown bark is smooth on young specimens; it turns gray later. On young specimens, the branches are ascending and form a pyramidal treetop . The relatively few branches on old specimens form a more open and irregular treetop. The leafy branches are strong to slender and pencil-shaped.

The terminal buds are relatively small with a length of about 6 millimeters. The upright or somewhat spreading, free bud scales are lanceolate with pointed upper ends.

The stiff, leathery foliage leaves , arranged alternately and spirally on strong branches of adult specimens, are 1.5 to 3 centimeters long and 2 to 4 millimeters wide, linear-lanceolate, straight or slightly crescent-shaped and narrow to a sharply pointed upper one The End.

Generative characteristics

The Chilean stone slice is dioecious, separate sexes ( diocesan ). The flowering period in Patagonia extends from December to January.

The male cones stand in pairs to four per leaf in the upper area of ​​the leafy branches. The male cones are cream-colored and cylindrical with a length of 10 to 20, rarely up to 25 millimeters and a diameter of 2.5 to 3.5 millimeters. The microsporophylls are deltoid with two spherical pollen sacs.

The female cones stand laterally on relatively short stems. The podocarpium thickens to a length of 7 to 8 millimeters and a diameter of 6 to 8 millimeters and is red and turns dark purple in color when ripe. The seed is egg-shaped together with the dark purple-green and when ripe purple-colored Epimatium with a length of 8 to 9 millimeters and a diameter of 6 to 7 millimeters. The seeds ripen in Patagonia from May to August.

Occurrence and endangerment

Podocarpus nubigenus occurs in the southern Chilean regions of northern Magallanes , Aisén del General Carlos Ibañez del Campo , Los Lagos (= region IX to XII) to Patagonia and adjacent areas in the Argentine provinces of Chubut , Neuquén , Río Negro .

Podocarpus nubigenus thrives in very humid, cloud-covered areas. It thrives in mixed temperate rainforests. An example of an ecosystem in which it occurs is the Valdivian rainforest . Podocarpus nubigenus thrives at altitudes of 430 ± 380 (0 to 1000) meters. In the area of ​​distribution there are annual average temperatures of 8.5 ° C, with an average minimum in the coldest month of 1.8 ° C and an annual average precipitation of 2160 millimeters.

In the Red List of Threatened Species of IUCN was Podocarpus nubigenus 2011 as "Near Threatened" = "potentially at risk" rated.

Systematics

The first description of Podocarpus nubigenus was in 1851 by John Lindley in Journal of the Horticultural Society London , Volume 6, page 264. The specific epithet nubigenus means "coming from the clouds" and refers to the location. Synonyms for Podocarpus nubigenus Lindl. are: Nageia nubigena (Lindl.) F.Muell. , Podocarpus nubicola Makoy ex Henk & Hochst. , Podocarpus nubigena Lindl. and Saxegothaea gracilis Gordon & Glend.

use

The wood is of good quality. The heartwood is usually light yellow to yellowish brown. The reddish wood has straight fibers. The wood is very water resistant. It is used in house building and wall cladding. The uses of this beautifully colored wood also range from furniture to sports equipment.

The podocarpium and epimatium (often referred to as "fruit") are edible.

Podocarpus nubigenus is used as an ornamental plant. It does best with some shade from taller trees. It can withstand the lowest temperatures around −8 ° and a few weeks under snow, this corresponds to USDA climate zone 8.

Common names in other languages

Common names in Spanish are: Huililahuani, Mañio, Mañio Hembra, Mañio Macho, Mañiu de la Costa, Mañío de Hojas Punzantes, Pino Amarillo.

swell

literature

Individual evidence

  1. a b c d e f g h i j k Aljos Farjon: A Handbook of the World's Conifers . Revised and Updated ed.,. tape 2 . BRILL, 2017, ISBN 978-90-04-32451-0 , pp. 900–901 ( Podocarpus nubigenus on pp. 900–901 in the Google book search).
  2. a b c d e data sheet at Temperate Plants Database, Ken Fern - temperate.theferns.info .
  3. a b c d e f Bernardo Gut: Trees in Patagonia . Springer Science & Business Media, 2008, ISBN 978-3-7643-8838-6 , pp. 96 ( Podocarpus nubigenus on p. 96 in the Google book search).
  4. a b data sheet at chileflora.com .
  5. a b c Podocarpus nubigenus in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved May 26, 2019.
  6. a b c Christopher J. Earle: Podocarpus nubigenus. In: The Gymnosperm Database. February 28, 2019, accessed May 23, 2019 .
  7. a b Podocarpus nubigenus in the Red List of Threatened Species of the IUCN 2019.1. Listed by: M. Gardner, 2011. Retrieved May 24, 2019.
  8. a b Podocarpus nubigenus at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed on May 26, 2019.
  9. a b c Podocarpus nubigenus at Plants For A Future . Retrieved May 22, 2019.

Web links

Commons : Chilean stone slab ( Podocarpus nubigenus )  - album with pictures, videos and audio files
  • Vascular Plants of the Americas : Podocarpus nubigenus at Tropicos.org. In: 83 . Missouri Botanical Garden, St. Louis
  • Simon Haberle, Keith Bennett, 1999: Late Quaternary Environmental Dynamics of Southwestern Chile. on-line.