Flora of North America North of Mexico

Abstract

The Flora of North America north of Mexico treats all native and naturalized vascular plants and bryophytes in Canada, Greenland, St. Pierre et Miquelon, and the continental United States including the Florida Keys and Aleutian Islands (approximately 18 million square kilometers). It provides accepted names, literature citations, basionyms, synonyms, morphological descriptions, habitat, geographical distribution, conservation or weed status, and a discussion of taxonomic issues for approximately 20,000 species. Of the total 30 volumes anticipated, 18 have been published and one is in press, treating 2021 genera and 12,393 species. For the remaining volumes, 763 genera and 5,008 species have been submitted, and 82 of the 144 families have been submitted in full. Completion is anticipated by the end of 2017. The project is managed by the Flora of North America Association. Content from published volumes is available through eFloras and JSTOR and has been provided to the World Flora informatics team.

Relationships of North American members of Rhodiola (Crassulaceae)

“…integrifolia and R. integrifolia subsp. procera overlap extensively, so our analyses agree with Moran's (2009) (Olfelt et al 2001), so we recommend that the taxon be maintained. Rhodiola integrifolia subsp.…”

“…The most recent evidence supports Linnaeus' classification of Sedum and Rhodiola as distinct genera (Ohba 1980(Ohba , 2003Mayuzumi and Ohba 2004), but there is still confusion about the species delimitations within Rhodiola, as illustrated by the fact that Ohba (2003) recognizes 58 species, while others recognize 90 or more species (Zhengyi and Raven 2001;Li and Zhang 2010). In this paper, we follow Ohba's (2003) taxonomy of the genus because it is the most complete treatment, to our knowledge, and its treatment of the North American Rhodiola corresponds largely with that of the Flora of North America (Moran 2009) and with the data which we present in this paper.…”

RAD sequencing rejects a long‐distance disjunction in Stellaria (Caryophyllaceae) and yields support for a new southern Rocky Mountains endemic

“…Stellaria L. (Caryophyllaceae) is a cosmopolitan genus of up to ~120 species (Morton, ). Species in this lineage occupy a broad range of habitats but are most diverse in upper montane environments and are typical elements of arctic‐alpine floras worldwide, especially in western North America and eastern Asia, which represent two centers of diversity for the genus (Schischkin, ; Shilong & Rabeler, ; Morton, ; M. Sharples & E. Tripp, in revision). Whereas many among the species of Stellaria are restricted to one major phytogeographical area such as the Tibetan Plateau, New Zealand, or the southern Andes, others have been noted by prior authors for exhibiting long‐distance biogeographical disjunctions.…”

“…Whereas many among the species of Stellaria are restricted to one major phytogeographical area such as the Tibetan Plateau, New Zealand, or the southern Andes, others have been noted by prior authors for exhibiting long‐distance biogeographical disjunctions. These include hypotheses of disjunctions between North America and South America (Morton, ), between Oceania and Patagonia (Webb & al., ), as well as between central Asia and the southern Rocky Mountains (Weber, ). One particularly marked example of long‐distance disjunction in Stellaria figured starkly in a major biogeographical hypothesis put forward by Weber () to explain floristic connections between central Asia and the southern Rocky Mountains, connections first remarked upon by J.D.…”

“…Among the most notable of disjunctions between the mountains of central Asia and the southern Rocky Mountains is that of Stellaria irrigua Bunge (Weber, , ; Morton, ). Stellaria irrigua was described in 1835 from the Altai Mountains of southern Siberia.…”