(Linnaeus 1753) Dumortier 1822 ex Lindberg 1868
Lunularia cruciata, the crescent-cup liverwort, is a liverwort of order Lunulariales, and the only species in the genus Lunularia and family Lunulariaceae. The name, from Latin luna, moon, refers to the moon-shaped gemmacups.
Lunularia occurs commonly in western Europe, where it is native to the region around the Mediterranean. It is also common in California, where it now grows "wild", and is known as an introduced weed in gardens and greenhouses in Australia. Ella Orr Campbell believed that Lunularia was introduced into New Zealand sometime after 1867. In America, the species grows only as a sterile form, easily recognized by the crescent-shaped cups containing asexual gemmae.
The discus-shaped gemmae are readily dislodged from the cups by splashes of rainwater. They can then quickly "take root" and start to grow in suitably damp places, which is why they are so successful in greenhouses.
Lunularia is not purely asexual; it can also reproduce sexually (see illustration) with four archegonia arranged in a cross-shaped head (hence the specific name cruciata) bearing diploid sporophyte plantlets. As in other liverworts, the main plant body or thallus is a haploid gametophyte.
- Edwards, Sean R. (2012). English Names for British Bryophytes. British Bryological Society Special Volume. 5 (4 ed.). Wootton, Northampton: British Bryological Society. ISBN 978-0-9561310-2-7. ISSN 0268-8034.
- Söderström; et al. (2016). "World checklist of hornworts and liverworts". Phytokeys. 59: 1–826. PMC . PMID 26929706. doi:10.3897/phytokeys.59.6261.
- "Part 2- Plantae (starting with Chlorophycota)". Collection of genus-group names in a systematic arrangement. Retrieved 30 June 2016.
- Schuster, Rudolf M. The Hepaticae and Anthocerotae of North America, volume VI, pages 80-91. (Chicago: Field Museum of Natural History, 1992). ISBN 0-914868-21-7.
- Campbell, Ella O. (1965). "Lunularia in New Zealand". Tuatara. 13 (1): 31–41. Retrieved 27 May 2016.
- Lunularic acid, a common endogenous growth inhibitor of liverworts. R. J. Pryce, Planta, 1971, Volume 97, Number 4, pages 354-357, doi:10.1007/BF00390214
|Wikimedia Commons has media related to Lunularia.|
|This bryophyte-related article is a stub. You can help Wikipedia by expanding it.|