recognized families (Malvaceae in the narrow sense) forms a monophyletic group (C. Bayer et al. 1999; W. S. Alverson et al. 1999) and the monophyly of an
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Cornus subg. Thelycrania Linnaeus Sp. Pl. 1: 117. 1753. Zack E. Murrell, Derick B. Poindexter Common names: Dogwood Etymology: Latin cornu, horn, alluding to
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Man. Cult. Trees ed. 2, 363. 1940. James B. Phipps Endemic Basionym: Crataegus sect. Rotundifoliae Eggleston in B. L. Robinson and M. L. Fernald, Manual
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monophyletic group, with Schoenoxiphium as a sister group. The investigations differ in their placement of subg. Vignea; some place it as a sister group to subg
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and evolution of heterostyly. Syst. Bot. 34: 386–405. McDill, J. R. and B. B. Simpson. 2011. Molecular phylogenetics of Linaceae with complete generic
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1997; A. B. Doweld 2001). T. B. Patterson (1998), K. Kubitzki et al. (1990+, vol. 3), W. S. Judd et al. (1999), R. F. Thorne (2000), and T. B. Patterson
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North America this section is represented by B. glandulosa, B. pumila, and B. nana. Birches are a difficult group taxonomically because of their high vegetative
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and, as postulated by V. Bittrich (1993), the two may form a monophyletic group. Results from preliminary molecular studies by M. Nepokroeff et al. (2002)
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al. 2001b; Simmons 2004; Zhang L. B. and Simmons 2006). Including Parnassiaceae within Celastraceae follows APGIII (Angiosperm Phylogeny Group 2009). Glossopetalon
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traditional infrageneric groups, in many cases correlated with geographic distribution. A seventh clade, represented by the type group and based on P. vulgaris
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Keener 1981). A. G. Jones (1980) treated the group as a subgenus within Aster in a broad sense. G. L. Nesom (1994b) proposed subgeneric status for the virguloid
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Subsecunda Linnaeus Sp. Pl. 2: 1106. 1753. , Gen. Pl. ed. 5, 487. 1754 ,. Cyrus B. McQueen†, Richard E. Andrus Etymology: Greek sphagnos, an unknown plant Treatment
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analyses, it was included in the Malpighiales in 1998 (Angiosperm Phylogeny Group 1998, 2003, 2009). The Malpighiales clade was first identified by M. W. Chase
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(including n Mexico) Species ca. 250 (224 in the flora). Eriogonum is the basal group of subfam. Eriogonoideae. Like all of its related genera, Eriogonum is a
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and a small group of species of uncertain placement. Among the North American species, C. pringlei and C. wrightii belong to the latter group, and C. arizonica
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×vailiae Linnaeus Sp. Pl. 1: 475. 1753. , Gen. Pl. ed. 5, 213. 1754. James B. Phipps Common names: Hawthorn aubépine Etymology: Greek Krataigon, thorn,
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is of critical diagnostic importance. Four primary hair groups are recognized by B. Eriksen and B. A. Jurtzev (1999): straight (or curved), crispate (short
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lineage within the Pooideae (Soreng and Davis 1998; Grass Phylogeny Working Group 2001) that is more closely related to the Meliceae than the core pooid tribes
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Show Lower Taxa Poaceae tribe Arundineae Burmeist. Grass Phylogeny Working Group, Kelly W. Allred Treatment appears in FNA Volume 25. Treatment on page 6
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treatment follows those by B. Maguire (1947, 1951) and M. F. Baad (1969) of Arenaria sect. Eremogone. The Eremogone “group” is morphologically distinctive
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