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Gasteranthus macrocalyx

Overview

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Endangered

Threat status

Description

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Family Gesneriaceae

Herbs, shrubs , or rarely trees . Leaves opposite or rarely alternate, whorled or basal, rosette forming; exstipulate ; usually simple , rarely shallowly to deeply lobed , pinnately or rarely palmately veined. Inflorescences usually cymes, rarely racemes , axillary , often near apex and appearing terminal ; usually pedunculate . Flowers perfect , zygomorphic, seldom actinomorphic . Calyx actinomorphic, rarely zygomorphic; usually (4 or) 5-divided. Corolla gamopetalous, zygomorphic, rarely actinomorphic; usually 2-lipped. Fertile stamens 2 or 4, then often didynamous , rarely 5, epipetalous ; anthers free or coherent, thecae 2, parallel, divergent, or divaricate ; staminodes 1-3 or absent. Disc ringlike to cupular, rarely absent. Ovary superior in all Old World taxa [half inferior, or inferior], 1-loculed; gynophore seldom present; placentas (1 or) 2, parietal , rarely 2-loculed, placenta 1 per locule and axile ; ovules numerous , anatropous . Style 1; stigmas 1 or 2. Fruit usually capsular , loculicidal, septicidal , or circumscissile, rarely a berry, indehiscent. Seeds numerous, fusiform to ellipsoid or ovoid , minute, sometimes with appendages at 1 or both ends, with or without endosperm; embryo straight, cotyledons equal or unequal after germination.

About 133 genera and 3000 species: Africa, Central and South America, E and S Asia, S Europe, Oceania; 56 genera (25 endemic) and 442 species (354 endemic) in China.

A few foreign well-known ornamental species are cultivated in China, including the florist's gloxinia, Sinningia speciosa (Loddiges) Hiern, and African violet, Saintpaulia ionantha Wendland.

The two ovary carpels may each produce a stigma; these stigmas are fused into a single structure. Some students of Gesneriaceae have considered the stigma to be single and either simple (capitate) or 2-lobed, whereas others consider each of the two stigmas as units . We have maintained the latter usage , but a family-wide investigation of stigma development is needed. The distinction can be blurred, however, because the stigmas may be completely fused into one with a capitate apex (as in Didymocarpus) or one of the two carpels or stigmas may be aborted resulting in a single stigma that may or may not be 2-lobed.[1]

Habitat

Ecology:
List of Habitats :1.9Forest - Subtropical/Tropical Moist Montane

Taxonomy

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Similar Species

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Members of the genus Gasteranthus

ZipcodeZoo has pages for 61 species, subspecies, varieties, forms, and cultivars in this genus:

G. acropodus · G. acuticarinatus · G. allenii · G. anomalus · G. atratus · G. atrolimbus · G. aurantiacus · G. bilsaensis · G. calcaratus · G. calcaratus subsp. calceolus · G. calcaratus subsp. oncogastrus · G. calceolus · G. caligula · G. carinatus · G. colombianus · G. columbianus · G. corallinoides · G. corallinus · G. crenatus · G. crispus · G. delphinioides · G. delphinoides · G. dressleri · G. ecuadorensis · G. extinctus · G. fuscilimbus · G. giganteus · G. glaber · G. herbaceus · G. imbaburensis · G. imbricans · G. lateralis · G. leopardus · G. macrocalyx · G. maculatus · G. magentatus · G. mutabilis · G. oncogastrus · G. orientandinus · G. osaensis · G. otongensis · G. panamensis · G. pansalamanus · G. pansamalanus · G. pendulus · G. perennis · G. pilosus · G. quitensis · G. reconditus · G. recurvatus · G. rupestris · G. sodiroana · G. sylvarum · G. tenellus · G. ternatus · G. timidus · G. tinctus · G. trifoliatus · G. venustus · G. villosus · G. wendlandianus

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 24, 2007:

Identifiers

Footnotes

  1. Wencai Wang, Kai-yu Pan, Zhen-yu Li, Anna L. Weitzman & Laurence E. Skog "Gesneriaceae". in Flora of China Vol. 18 Page 244. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
Last Revised: 7/2/2009