Fair skin

from Wikipedia, the free encyclopedia
Fair skin
Hymenocallis caribaea

Hymenocallis caribaea

Systematics
Monocots
Order : Asparagales (Asparagales)
Family : Amaryllis family (Amaryllidaceae)
Subfamily : Amaryllidoideae
Tribe : Hymenocallideae
Genre : Fair skin
Scientific name
Hymenocallis
Salisb.

The genus of beautiful skin ( Hymenocallis ), also called beautiful lilies , belongs to the Amaryllis family (Amaryllidaceae). The wide natural range of the 50 to 65 species lies in the Neotropic .

description

Appearance and leaves

Illustration of Hymenocallis fragrans

Hymenocallis species grow as perennial herbaceous plants . They live as evergreen plants or geophytes and develop onions as persistence organs. The egg-shaped or spherical onions have a tunic (onion skin). There are 2 to 16 leaves formed directly above the bulb , which are rarely stalked. The leaf blades are narrow to broadly tongue-shaped or obscure-lanceolate, rarely ovoid to elliptical.

Inflorescences and flowers

A more or less long, leafless inflorescence stem is formed. Two to three triangular, oval or lance-shaped bracts surround the flowers knopigen protective and hang down in the flower up state. The umbel-shaped inflorescence contains one to 16 mostly sessile, upright or somewhat divergent flowers, each with an often narrow lanceolate bract.

The large, star-shaped, fragrant flowers are radial symmetry and threefold. The six identical bracts are fused at their base to form a more or less long tube. There are six fertile stamens . At Hymenocallis TYPES is particularly striking about the standing of perianth funnel or wheel-shaped corona, which is formed from the overgrown areas of the stamens. The margins of the secondary crown are often toothed or torn. The often long, thread-like, free area of ​​the stamens is bent back or ascending. The pollen is yellow, often gold or orange in color. Three carpels are to one, spherical, ovoid, oblong or pear-shaped, under constant, dreikammerigen ovary grown. Each ovary chamber contains two to ten ovules . The thin stylus ends in a cephalic scar.

Fruits and seeds

The large, green, almost spherical to elongated capsule fruits are triple and leathery. The large seeds are green and fleshy.

Sets of chromosomes

The basic chromosome number is x = 20, 23.

Systematics and distribution

The first description of the genus Hymenocallis was made in 1812 by Richard Anthony Salisbury in Transactions of the Horticultural Society of London , 1, p 338. As lectotype was 1913 Hymenocallis littoralis (Jacq.) Salisb. set. The generic name Hymenocallis is derived from the Greek words hymên for skin and kallos for beautiful, this refers to the flowers. Synonyms for Hymenocallis Salisb. are: Liriopsis Rchb. , Choretis Herb. , Nemepiodon Raf. , Siphotoma Raf. , Tomodon Raf. , Troxistemon Raf.

The genus Hymenocallis belongs to the tribe Hymenocallideae in the subfamily Amaryllidoideae within the family Amaryllidaceae . Some species that were previously classified in the Hymenocallis belong to the closely related genera Ismene Salisb. ex Herb. and Leptochiton Sealy . Some species of the genus Pancratium L. now belong to Hymenocallis .

The neotropical distribution area extends from the southeastern and south-central USA (15 species), over the Caribbean islands and Central America to South America .

Illustration of Hymenocallis harrisiana
Inflorescence from above of Hymenocallis occidentalis
Flowering in detail of Hymenocallis palmeri
Illustration of Hymenocallis rotata
Inflorescence from above of the magnificent fine skin ( Hymenocallis speciosa )
Illustration of Hymenocallis tubiflora

The genus Hymenocallis includes 50 to 65 species:

No longer belonging to Hymenocallis , but to the genus Ismene (selection):

use

The varieties of some species and hybrids are used as ornamental plants in tropical parks and gardens.

swell

Individual evidence

  1. ^ Hymenocallis at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  2. ^ Hymenocallis at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed October 19, 2014.
  3. a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi bj bk bl bm bn bo Rafaël Govaerts (Ed.): Hymenocallis. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved July 27, 2018.
  4. ^ Hymenocallis in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved February 27, 2011.
  5. Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: The great zander. Encyclopedia of Plant Names. Volume 2. Types and varieties. Eugen Ulmer, Stuttgart (Hohenheim) 2008, ISBN 978-3-8001-5406-7 .
  6. Gordon Cheers (Ed.): Botanica. The ABC of plants. 10,000 species in text and images . Könemann Verlagsgesellschaft, 2003, ISBN 3-8331-1600-5 (therein page 460).

Web links

Commons : Beautiful skin ( Hymenocallis )  - Collection of images, videos and audio files