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Halenia minima

Overview

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Threatened
Threat status

Description

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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]

Habitat

Ecology:
List of Habitats :4.7Grassland - Subtropical/Tropical High Altitude

Taxonomy

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Similar Species

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Members of the genus Halenia

ZipcodeZoo has pages for 89 species, subspecies, varieties, forms, and cultivars in this genus:

H. adpressa · H. alata · H. alleniana · H. apiculata · H. aquilegiella · H. asclepiadea · H. bella · H. bifida · H. brentoniana · H. brevicornis · H. caespitosa · H. campanulata · H. candida · H. chlorantha · H. conzattii · H. corniculata · H. crassiuscula · H. crumiana · H. cuatrecasasii · H. dasyantha · H. decumbens · H. deflexa (American Spurred Gentian) · H. deflexa subsp. brentoniana (American Spurredgentian) · H. deltoidea · H. dombeyana · H. elata · H. elegans · H. elliptica · H. elliptica var. grandiflora · H. euryphylla · H. foliosa · H. gentianoides · H. gigantea · H. gracilis · H. herzogii · H. heterantha · H. hieronymi · H. hintoni · H. hintonii · H. hoppii · H. hygrophila · H. hypericoides · H. japonica · H. kalbreyeri · H. killipii · H. longicaulis · H. longicornu · H. major · H. mathewsii · H. meyeri-johannis · H. micranthella · H. minima · H. multiflora · H. nudicaulis · H. palmeri · H. parviflora · H. pavoniana · H. penduliflora · H. perrottetii · H. plantaginea · H. pringlei · H. pulchella · H. purdieana · H. purpusi · H. pusilla · H. recurva (Mt. Graham Spurred-Gentian) · H. recurvata · H. rhyacophila · H. robusta · H. rothrockii · H. rusbyi · H. schiedeana · H. serpyllifolia · H. shannonii · H. sibirica · H. silenoides · H. spatulata · H. sphagnicola · H. stuebelii · H. taruga-gasso · H. tarugo-gasso · H. tuerkheimii · H. umbellata · H. valerianoides · H. vincetoxicoides · H. viridis · H. weddeliana (Deers Antlers) · H. weddelliana · H. woodsoniana

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 25, 2007:

Identifiers

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]
Last Revised: 2009-07-03