Brodiaea elegans

Brodiaea elegans
	Brodiaea elegans
Systematics
	Monocots
Order :	Asparagales (Asparagales)
Family :	Asparagaceae (Asparagaceae)
Subfamily :	Brodiaeoideae
Genre :	Brodiaea
Type :	Brodiaea elegans
Scientific name
	Brodiaea elegans
	Hoover

Brodiaea elegans is a species of the genus Brodiaea in the asparagus family (Asparagaceae). The two subspecies are only found in the western US states of California and Oregon.

description

Bloom in detail

Vegetative characteristics

Brodiaea elegans grows as a perennial herbaceous plant . Plant tubers are formed as persistence organs . One to six narrow leaves are produced per tuber during the growing season.

Generative characteristics

The strong inflorescence stem is 10 to 50 centimeters long. At the end of the inflorescence stem there is an open, golden inflorescence . The bracts envelop the inflorescence, even while it is still in bud, not completely. There are also cover sheets . The upright flower stalk is 5 to 10 centimeters long.

The hermaphrodite flowers are radial symmetry and threefold. There are two circles, each with three bluish-purple-colored to violet bracts , which are fused at their base. The three outer bracts are slightly narrower than the inner three. The six bluish-purple, bluish-purple, pink-purple or pink bracts are fused together to form an 8 to 19 centimeter long funnel-shaped flower tube that does not open until the fruit is ripe. The corolla is a total of 24 to 38 millimeters long. The free part of the bracts is 15 to 30 millimeters long, spread out and bent back at the upper end. In Brodiaea elegans there are three sterile stamens, i.e. staminodes , that resemble small petals and are opposite the outer bracts , within the bracts . The upright or slightly bent back at the upper end, white or light purple-colored, 6 to 9 millimeters long and relatively wide staminodes stand away from the fertile stamens, but are bent outward at their upper end; the edges are flat or 3/4 rolled up, and the top is rounded. The staminodes and the stamens are about the same length. The three fertile stamens are located opposite the inner bloom and also at the base of the bloom. The base of the 4 to 6 millimeter long stamens is widened, but does not form triangular wings. The size and shape of the stamens and the structures at the base of the stamens are important determinants for the Brodiaea species. The anthers are linear with a length of 4 to 10 millimeters with a rounded upper end. Three carpels are long to a 9 to 15 millimeters, three crests membered ovary grown. The 7 to 15 millimeter long stylus ends in a three-lobed scar .

The egg-shaped capsule fruits open up in the form of fissures (loculicidal). The seeds are black.

Systematics and distribution

The first description of Brodiaea elegans was in 1939 by Robert Francis Hoover in American Midland Naturalist , Volume 22, Issue 3, pages 555-558. A synonym of Brodiaea elegans Hoover is Brodiaea howellii S.Watson non Eastw.

Lincoln Constance - 2289 (HT: UC) is deposited as type material .

Most of the herbarium specimens that WL Jepson (1923-1925) assessed as belonging to Brodiaea coronaria were recognized by Theodore F. Niehaus (1971, 1980) as belonging to Brodiaea elegans .

Two subspecies have been distinguished from Brodiaea elegans since 1971:

Brodiaea elegans Hoover subsp. elegans (Syn .: Brodiaea coronaria var. mundula Jeps. , Brodiaea elegans var. mundula (Jeps.) Hoover ): It occurs in California and western Oregon. It thrives in grasslands, pastures and open woodlands at altitudes from 0 to 2200 meters.
Brodiaea elegans subsp. hooveri T.F.Niehaus (Syn .: Brodiaea hooveri (TFNiehaus) Traub ): It occurs mainly in the Willamette Valley in Oregon. Other locations are not confirmed. It thrives in the grasslands at altitudes from 0 to 100 meters.

Individual evidence

↑ Rafaël Govaerts (Ed.): Brodiaea elegans. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved December 29, 2019.
↑ ^a ^b ^c ^d ^e ^f ^g ^h J. Chris Pires: In: Flora of North America Editorial Committee (Hrsg.): Flora of North America North of Mexico. Volume 26: Magnoliophyta: Liliidae: Liliales and Orchidales , Oxford University Press, New York and Oxford, 2002, ISBN 0-19-515208-5 . Brodiaea elegans , p. 324 - online with the same text as the printed work .
↑ Brodiaea elegans in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved December 29, 2019.
↑ ^a ^b Brodiaea elegans at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed December 29, 2019.
^ ^A ^b Robert E. Preston: A Revision of Brodiaea coronaria (Asparagaceae: Brodiaeoideae): Morphometric Analysis and Recognition of New and Emended Taxa. In: Systematic Botany , Volume 38, Issue 4, 2013, pp. 1012-1028. doi : 10.1600 / 036364413X674913
↑ J. Chris Pires, Robert E. Preston: Brodiaea , 2012: Brodiaea elegans subsp. elegans datasheet in Jepson Flora Project (Ed.): Jepson eFlora .

Web links

Commons : Brodiaea elegans - collection of images, videos and audio files

Data sheet of Brodiaea elegans at Pacific Bulb Society with detailed photos. last accessed on December 29, 2019.

USDA profiles with distribution map.

Digitized herbarium specimens from representatives of the genus Brodiaea .

Data sheet of Brodiaea elegans at Calflora Database with distribution map and photos.

[WCSP-1] Rafaël Govaerts (Ed.): Brodiaea elegans. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved December 29, 2019.

[FoNA-2] ↑ ^a ^b ^c ^d ^e ^f ^g ^h J. Chris Pires: In: Flora of North America Editorial Committee (Hrsg.): Flora of North America North of Mexico. Volume 26: Magnoliophyta: Liliidae: Liliales and Orchidales , Oxford University Press, New York and Oxford, 2002, ISBN 0-19-515208-5 . Brodiaea elegans , p. 324 - online with the same text as the printed work .

[GRIN-3] Brodiaea elegans in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved December 29, 2019.

[Tropicos-4] Brodiaea elegans at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed December 29, 2019.

[Preston2013-5] A ^b Robert E. Preston: A Revision of Brodiaea coronaria (Asparagaceae: Brodiaeoideae): Morphometric Analysis and Recognition of New and Emended Taxa. In: Systematic Botany , Volume 38, Issue 4, 2013, pp. 1012-1028. doi : 10.1600 / 036364413X674913

[Jepson_eFlora2012-6] J. Chris Pires, Robert E. Preston: Brodiaea , 2012: Brodiaea elegans subsp. elegans datasheet in Jepson Flora Project (Ed.): Jepson eFlora .