Halenia weddeliana

• Interesting Facts
• Common Names
• Description
• Biology
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Interesting Facts

Common Names

Description

Family Gentianaceae

Herbs [shrubs or small trees ], annual , biennial, or perennial . Stems ascending , erect , or twining . Leaves opposite, less often alternate or whorled , simple , base connate ; stipules absent. Inflorescences simple or complex cymes, sometimes reduced to sessile clusters , often in a thyrse or 1-flowered. Flowers bisexual , rarely unisexual , 4 or 5 (or 6-8) [-12]-merous. Calyx tubular , obconic, campanulate , or rotate, lobes joined at least basally. Corolla tubular, obconic, salverform , funnelform , campanulate, or rotate, rarely with basal spurs; lobes overlapping to right or rarely valvate in bud; plicae (extensions of the corolla tube between the lobes) present or absent. Stamens inserted on corolla tube or occasionally at sinus between corolla lobes, alternate with lobes; anthers basifixed or dorsifixed , 2-locular. Nectaries absent or attached to ovary base or corolla. Ovary usually 1-locular at least apically, rarely 2-locular due to intrusion of a lamellate placenta into locular cavity . Fruit a 2-valved capsule, rarely a berry. Seeds many or rarely few, small; endosperm abundant [scant in saprophytic genera].

About 80 genera and 700 species: worldwide; 20 genera and 419 species in China, of which two genera and 251 species are endemic.[1]

Genus Halenia

Herbs annual [or perennial ]. Roots slender, fibrous . Sometimes with elongated rhizomes. Leaves opposite [or whorled ]. Inflorescences terminal and axillary , in clusters or sometimes in lax panicles of cymes. Terminal clusters umbel-like, subtended by a whorl of 4 leaves, often on short axillary branches. Flowers 4merous. Calyx lobed nearly to base . Corolla campanulate , lobed to below middle , with spurs near base of corolla tube . Stamens inserted on corolla tube. Ovary 1celled. Style very short. Stigma 2lobed. Capsules ovoid , 2valved, 1.1-1.3 cm, many seeded. Seeds ellipsoid to subglobose; seed coat almost smooth .

About 100 species: mainly in America, a few species in Asia and Europe; two species in China.[2]

Physical Description

Biology

Growth

Sunlight: Sun Exposure: Full Sun .

Taxonomy

Similar Species

Members of the genus Halenia

ZipcodeZoo has pages for 4 species, subspecies, varieties, forms, and cultivars in this genus:

H. deflexa (American Spurred Gentian) · H. deflexa subsp. brentoniana (American Spurredgentian) · H. recurva (Mt. Graham Spurred Gentian) · H. weddeliana (Deers Antlers)

More Info

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• Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books

Further Reading

• Ho Ting-nung; Liu Shang-wu, & Wu Ching-ju in Ho Ting-nung, ed. 1988. Gentianaceae. Fl. Reipubl. Popularis Sin. 62: 1-411.

Notes

Contributors

• Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 11, 2012.

Identifiers

• Biodiversity Heritage Library NamebankID: 1
• Zipcode Zoo Species Identifier: 976995

Footnotes

1. Ting-nung Ho & James S. Pringle "Gentianaceae". in Flora of China Vol. 16 Page 1. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
2. Ting-nung Ho & James S. Pringle "Halenia". in Flora of China Vol. 16 Page 100. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]

©2004-2012 David Stang. All rights reserved.