Lesson plan
Parnassiaceae
Parnassiaceae Gray were a family of flowering plants in the eudicot order Celastrales. The family is not recognized in the APG III system of plant classification. When that system was published in 2009, Parnassiaceae were treated as subfamily Parnassioideae of an expanded family Celastraceae. The family had only two genera, Lepuropetalon and Parnassia. Lepuropetalon has only one species, Lepuropetalon spathulatum, a winter annual that usually prefers sandy soil. It is one of the smallest of flowering plants, up to 2 cm tall. Lepuropetalon has a disjunct distribution, being known from the southeastern United States and central Chile, but is probably far more common than has been reported. Parnassia is a genus of perennial herbs, up to 60 cm tall, that grow in bogs, marshes, and other wet areas, mostly in cool to cold climates of the north temperate zone. There are at least 70 species. Sixty-three species occur in China and 49 of these occur nowhere else. A second area of diversity for Parnassia is North America and about 9 species occur there. Parnassia palustris is the most well known and widely distributed species. It ranges through most of northern Eurasia, Canada, and the western United States. Parnassia palustris is widely cultivated. About 10 species are known in cultivation, all as ornamentals.
Article summary
Parnassiaceae Gray were a family of flowering plants in the eudicot order Celastrales. The family is not recognized in the APG III system of plant classification. When that system was published in 2009, Parnassiaceae were treated as subfamily Parnassioideae of an expanded family Celastraceae. The family had only two genera, Lepuropetalon and Parnassia. Lepuropetalon has only one species, Lepuropetalon spathulatum, a winter annual that usually prefers sandy soil. It is one of the smallest of flowering plants, up to 2 cm tall. Lepuropetalon has a disjunct distribution, being known from the southeastern United States and central Chile, but is probably far more common than has been reported. Parnassia is a genus of perennial herbs, up to 60 cm tall, that grow in bogs, marshes, and other wet areas, mostly in cool to cold climates of the north temperate zone. There are at least 70 species. Sixty-three species occur in China and 49 of these occur nowhere else. A second area of diversity for Parnassia is North America and about 9 species occur there. Parnassia palustris is the most well known and widely distributed species. It ranges through most of northern Eurasia, Canada, and the western United States. Parnassia palustris is widely cultivated. About 10 species are known in cultivation, all as ornamentals.
Key claims
- publication date: 2009 — source: Wikipedia · confidence 0.95
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- The record states that the publication date is "2009". What evidence would count against this claim?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
- Wikipedia https://en.wikipedia.org/w/index.php?oldid=1354643073
Key claims and bibliography are generated from the same tracked claims and sources as the article page.