Floral anatomy ofHypseocharis (Oxalidaceae) with a discussion on its systematic position

Devi, Dharmasoth Rama

doi:10.1007/bf00937953

Cited by 10 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The petals are contort in those genera of Geraniaceae that have otherwise polysymmetric flowers (Geranium, Monsonia) (Eichler, 1878), and also in Hypseocharitaceae (Devi, 1991) and Ledocarpaceae (Knuth, 1931).…”

Section: Malpighialesmentioning

confidence: 99%

The Immense Diversity of Floral Monosymmetry and Asymmetry Across Angiosperms

Endress

2012

Bot. Rev.

View full text Add to dashboard Cite

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.

show abstract

Section: Malpighialesmentioning

confidence: 99%

The Immense Diversity of Floral Monosymmetry and Asymmetry Across Angiosperms

Endress

2012

Bot. Rev.

View full text Add to dashboard Cite

show abstract

“…Nectar secretion associated with the adaxial sepal has long been assumed for Pelargonium (Eichler, 1878;Knuth, 1912). Although a distinct gland was described later on (Japp, 1909;Labbé, 1964), hardly any similarities between the nectaries of Pelargonium and the rest of the Geraniaceae were identified (Kumar, 1976;Devi, 1991). Link (1989) proposed a first idea of derivation of the nectaries of the Geraniaceae in the classical sense from each other.…”

Section: Common Patterns In Divergent Floral Nectariesmentioning

confidence: 99%

Geraniales flowers revisited: evolutionary trends in floral nectaries

Jeiter

Weigend

Hilger

2016

Ann Bot

View full text Add to dashboard Cite

show abstract

“…Cronquist (1981) considered the genus as a link between the Oxalidaceae and Geraniaceae, while Boesewinkel (1988) analyzed the seed structure and affirmed that the genus is closer related to Geraniaceae than to Oxalidaceae. Subsequent studies on floral anatomy demonstrated that Hypseocharis should be placed in Geraniaceae (Devi, 1991). Price and Palmer (1993) confirmed that placement with molecular data (rbcL-phylogeny) and Palazzesi et al (2012) retrieved Hypseocharis as sister to core-Geraniaceae and suggested resurrecting the family Hypseocharitaceae Wedd.…”

Section: Introductionmentioning

confidence: 74%

Taxonomical revision of the genus Hypseocharis in Peru and Bolivia

et al. 2020

View full text Add to dashboard Cite

In the present study we revised the genus Hypseocharis in Bolivia and Peru. A total number of 105 herbarium specimens were revised to evaluate the morphological diversity across the range of the genus. In a subset of 24 complete individuals a multivariate morphometric analysis was performed to evaluate the morphological characters historically used to differentiate the “species” of the genus Hypseocharis. A revision of the herbarium material indicated that there are no sharp lines dividing the different “species” with the only exception of H. tridentata. The multivariate analysis indicated that H. bilobata, H. malpasensis and H. pedicularifolia all occupy the same morphospace as H. pimpinellifolia and there are no individual morphological characters or suites of characters permitting the differentiation of distinct taxa. This confirms earlier findings from Argentina: There are only two species in the genus, widespread Hypseocharis pimpinellifolia and H. tridentata. Hypseocharis pilgeri, originally described from Peru, can also not be differentiated from H. pimpinellifolia. We propose the recognition of only two species: H. pimpinellifolia with variously pinnate to bipinnate leaves with a terminal leaflet at most marginally larger than the lateral ones, flowers with 15 anthers and capsular fruits as differing from H. tridentata with pinnate leaves with the terminal leaflet much larger than the lateral ones, flowers with 5 anthers and schizocarpic fruits. Hypseocharis pimpinellifolia is a widespread and polymorphic species, ranging from Ancash (Peru) to La Rioja (Argentina) and comprises forms with white, yellow, orange, and red corollas and with simply pinnate to very finely bipinnate leaves.

show abstract

Floral anatomy ofHypseocharis (Oxalidaceae) with a discussion on its systematic position

Cited by 10 publications

References 1 publication

The Immense Diversity of Floral Monosymmetry and Asymmetry Across Angiosperms

The Immense Diversity of Floral Monosymmetry and Asymmetry Across Angiosperms

Geraniales flowers revisited: evolutionary trends in floral nectaries

Taxonomical revision of the genus Hypseocharis in Peru and Bolivia

Contact Info

Product

Resources

About