The American Loti with Special Consideration of a Proposed New Section, Simpeteria

Ottley, Alice M.

doi:10.2307/2804746

Cited by 26 publications

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“…Floral asymmetry is characteristic for some larger clades of Fabaceae, such as Senna and Chamaecrista in caesalpinioids, in which the flowers are more or less open but corolla, androecium and gynoecium (enantiostyly) can be involved in asymmetry (Tucker, 1996;Gottsberger & Silberbauer-Gottsberger, 1988;Marazzi et al, 2006Marazzi et al, , 2007Marazzi & Endress, 2008), and Delonix, in which the androecium base with the access to the nectar is asymmetric (Troll, 1951;Endress, 1994); in Papilionoideae the flowers of Phaseoleae are largely asymmetric by sometimes extensive torsion of the keel (Troll, 1951;Brizuela et al, 1993;Endress, 1994;Etcheverry et al, 2008), or in certain Vicieae the keel is asymmetric without torsion (the asymmetry arising late in development), as in Lathyrus species (Teppner, 1988;Westerkamp, 1993;Prenner, 2003) and Ottleya (Ottley, 1944;Sokoloff, 1999;Sokoloff et al, 2007); asymmetry in the androecium is present in early development of Fig. 6 Occurrence of different floral asymmetry patterns across angiosperms (cladogram from APG, 2003, with change of "Nymphaeaceae" to "Nymphaeales", to include Hydatellaceae, according to Saarela et al, 2007).…”

Section: Systematic Distribution Of Floral Asymmetry Across Angiospermsmentioning

confidence: 96%

The Immense Diversity of Floral Monosymmetry and Asymmetry Across Angiosperms

Endress

2012

Bot. Rev.

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Floral monosymmetry and asymmetry are traced through the angiosperm orders and families. Both are diverse and widespread in angiosperms. The systematic distribution of the different forms of monosymmetry and asymmetry indicates that both evolved numerous times. Elaborate forms occur in highly synorganized flowers. Less elaborate forms occur by curvature of organs and by simplicity with minimal organ numbers. Elaborate forms of asymmetry evolved from elaborate monosymmetry. Less elaborate form come about by curvature or torsion of organs, by imbricate aestivation of perianth organs, or also by simplicity. Floral monosymmetry appears to be a key innovation in some groups (e.g., Orchidaceae, Fabaceae, Lamiales), but not in others. Floral asymmetry appears as a key innovation in Phaseoleae (Fabaceae). Simple patterns of monosymmetry appear easily "reverted" to polysymmetry, whereas elaborate monosymmetry is difficult to lose without disruption of floral function (e.g., Orchidaceae). Monosymmetry and asymmetry can be expressed at different stages of floral (and fruit) development and may be transient in some taxa. The two symmetries are most common in bee-pollinated flowers, and appear to be especially prone to develop in some specialized biological situations: monosymmetry, e.g., with buzz-pollinated flowers or with oil flowers, and asymmetry also with buzz-pollinated flowers, both based on the particular collection mechanisms by the pollinating bees. Floral monosymmetry has developed into a model trait in evo-devo studies, whereas floral asymmetry to date has not been tackled in molecular genetic studies.

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Section: Systematic Distribution Of Floral Asymmetry Across Angiospermsmentioning

confidence: 96%

The Immense Diversity of Floral Monosymmetry and Asymmetry Across Angiosperms

Endress

2012

Bot. Rev.

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“…Herbarium soecimens of Canadian soecies of Lotrls were borrowed'from the following ~a n a d i a n herbaria: (Ottley 1923;Abrams 1944;Hitchcock et al 1961). With the exception of L. krylooii, synonymy has been given only for the nomenclature encountered on the herbarium sheets in our study.…”

Section: Methodsmentioning

confidence: 99%

“…In North America, Ottley (1944) reported the occurrence of the only natural hybrids between a few species of the southwestern United States. In North America, Ottley (1944) reported the occurrence of the only natural hybrids between a few species of the southwestern United States.…”

Section: Introductionmentioning

confidence: 99%

The biosystematics of the genus Lotus (Leguminosae) in Canada. I. Cytotaxonomy

Zandstra¹,

Grant²

1968

Can. J. Bot.

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A morphological and cytological study of native and introduced Lotus species found in Canada has been conducted on both living material and on over 600 herbarium specimens from 20 Canadian and American herbaria. Illustrations of flowers, seed, ovaries and styles, habit, and geographical distribution for each species are given. Five native species, L. denticulatus (E. Drew) Greene (annual (0, 2n = 12), and L . tenlris Waldst. et Kit. (P, 0 , 212 = 12) were found in Canada. Chromosome numbers are reported for the first time for L . formosissimus, L. tnicrarzthlrs, and L. pinrzat~rs. Drawings of karyotypes and idiograms based on chromosome analyses are presented. Morphological observations made include style shape, pollen size and shape, seed size, number of flowers, length of standard, calyx index (length of calyx/length of calyx tube), length of peduncle, length of legume, length of petiole, and central leaflet index (leaflet lengthlleaflet width). Results of hydrocyanide tests on leaves of the native species were negative. The relationships of the different taxa are discussed and it is considered that both the North American and Old World species should be included in a single genus Lotus.

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“…1 have studied the fertile (and often even fruiting) intermediates between 0. wrightii and o. oroboides, between o. oroboides and 0. greenei, between 0. wrightii and 0. greenei, between 0. utahensis and 0. wrightii, between 0. rigida and 0. greenei, and between 0. rigida and 0. nivea. OTTLEY (1944) reported several other hybrids. The hybrids of 0. rigida are often distinguishable due to the papillose seeds, and those of 0.greenei possess as a rule the indumentum of patent hairs.…”

Section: Figmentioning

confidence: 98%

“…the group (as Lotus sect. Simpeteria O'ITLEY), provided an important revision of its species (OTTLEY 1944). and drew the attention to the flower symmetry as a taxonomic character in Papilionaceae-Loteae (OTTLEY 1923: 207).…”

Section: Figmentioning

confidence: 99%

Ottleya, a new genus of Papilionaceae — Loteae from North America

Sokoloff

1999

Feddes Repertorium

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A new genus, Ottleya gen. nov., is described from North America. The genus Ottleya corresponds to Lotus group Simpeteria of ISELY's (1981) classification and comprises 12 species: O. argyraea comb, nov., O. flexuosa comb. nov., O. grandiflora comb. nov., O. greenei comb. nov., O. intricata comb. nov., O. mearnsii comb. nov., O. nivea comb. nov., O. oroboides comb. nov., O. rigida comb. nov., O. strigosa comb, nov., O. utahensis comb. nov. and O. wrightii comb. nov. restricted to SW part of the USA, N and Central Mexico.

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The American Loti with Special Consideration of a Proposed New Section, Simpeteria

Cited by 26 publications

References 0 publications

The Immense Diversity of Floral Monosymmetry and Asymmetry Across Angiosperms

The Immense Diversity of Floral Monosymmetry and Asymmetry Across Angiosperms

The biosystematics of the genus Lotus (Leguminosae) in Canada. I. Cytotaxonomy

Ottleya, a new genus of Papilionaceae — Loteae from North America

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