Spathiphyllum montanum

Spathiphyllum montanum

Spathiphyllum montanum is a plant of the family Araceae ( Araceae ). It grows as a perennial herbaceous plant and is native to mountain forests of Costa Rica and Panama.

• 5.1 Notes and references

Description

Vegetative characteristics

Spathiphyllum montanum is a perennial herbaceous plant with short rhizome. It leads no milk juice. The two lines on the rhizome stationary blades are 22.5 to 52 (-80 ) cm long stalks. The petiole is below about ( 37 - ) 60-80 per cent of its developed length of sheath-like and has at its upper end a thickening ( geniculum ), which serves as the joint, if necessary. The simple and undivided, ganzrandigen leaf blades are elliptical to oblong - lanceolate or ovate-lanceolate and nearly truncate or seldom thickness taper at the bottom. They are about 22-35 ( -53 ) cm long and 8.5 to 16 (-25 ) cm wide. The leaf blades have both sides of each 12-25 (-28 ) lateral nerves first-order and in parallel other intervening weaker side nerves.

Generative features

The individually standing, bulbous inflorescence is about 15.5 to 61.5 ( -119 ) cm long stalks. The wide-open spathe is the heyday of white with green midrib, then later green completely and remains even after flowering. She is about 12-22 (-25 ) cm long and 4 to 6.6 ( -8.7 ) cm wide, has an elliptical to narrowly ovate or verkehrteifömige shape and running ( 2.5 - ) 3.9 to 7, 8 cm far down on the inflorescence stalk. The uniformly occupied with hermaphrodite flowers spadix is approximately 2.4-4.5 (-10 ) cm long, has about 7-12 (-18 ) mm in diameter and is almost sessile, or to about 0.7 ( -1 in the spathe, 2 ) cm long stalks.

The most six green tepals are not fused together. There are usually six free stamens present. The off-white stamp surmounted with a conical stylus the perianth by about 0.5-2.5 (-4.5 ) mm. The upper permanent, usually dreifächerige ovary has a central angle constant placenta. The fruits are berries that are white when mature.

The plants can bloom almost all year round.

Distribution and habitat

The species occurs in the mountains of Central America, of the Cordillera de Guanacaste in northwestern Costa Rica to the province of Veraguas in central Panama.

Spathiphyllum montanum grows in montane rain forests and cloud forests in approximately (450 - ) 1100-2050 m above sea level.

Taxonomy

Plants of this species in 1960 specifically addressed in the previously last full revision of the genus by George S. Bunting as different, but preliminarily found in anticipation of additional collections made as a high position to form Spathiphyllum wendlandii. In 1976, these plants were then by Richard A. Baker with reference to this revision and based on a Aufsammlung, which he himself had made ​​with William Carl Burger in 1975, as Spathiphyllum wendlandii subsp. montanum formally described. In 1997 this was finally charged by Michael H. Grayum for the independent type. The type locality is approximately 1500 m above sea level near Monte Verde in the Cordillera de Tilarán in northwestern Costa Rica. From Spathiphyllum wendlandii the species differs by shorter leaf sheaths that do not reach the geniculum, as well as by smaller leaves. Spathiphyllum wendlandii and S. montanum be placed within the genus to section Spathiphyllum.

Etymology

The specific epithet montanum (lat. mountain) refers to the presence of this species in mountain forests. The genus name Spathiphyllum consists of spathe, the name for the conspicuous bract, which accompanies the inflorescence of Arum, and the ancient Greek word φύλλον together ( phyllon, dt Journal). The name refers to the fact that in this genus the spathe less different from foliage leaves, as is usual with the arum family.

Swell

• Genaust H. 1996: Etymological Dictionary of the botanical name of the plant. 3rd edition, Birkhauser Verlag, Basel, ISBN 3-7643-2390-6.
• Grayum M. H. 2003: Araceae. In: BE Hammel, Grayum MH, Herrera C., Zamora N. (ed.): Manual de plantas de Costa Rica. Vol II: Gimnospermas y Monocotiledóneas ( Agavaceae - Musaceae ). Missouri Botanical Garden Press, St. Louis, ISBN 1-930723-22-9, pp. 59-200. - S. 178 - Online