Floral ontogeny in Sophoreae (Leguminosae: Papilionoideae): II. <i>Sophora</i> sensu lato (Sophora group)

Tucker, Shirley C.

doi:10.1002/j.1537-2197.1994.tb15456.x

Cited by 21 publications

(21 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The 23 genera of nonpapilionoid types listed by Pennington et al (2000) can be classified into two groups: one group with zygomorphic flowers but atypical among papilionoids in having only one petal or more than ten stamens (e.g., Amburana, Ateleia, Bobgunnia, Bocoa, Cyathostegia, Exostyles, and Swartzia) and one group with radially symmetrical flowers (e.g., Acosmium, Amphimas, Cadia, Cyathostegia, Dicraeopetalum, Harleyodendron, Holocalyx, Lecointea, Lovanafia, Myrocarpus, and Zollernia). The Cadia/Calpurnia clade is sister to Sophora, a genus with papilionoid flowers (Tucker, 1994). However, in several Sophora species and other zygomorphic papilionoids (Tucker, 1984(Tucker, , 1985(Tucker, , 1987(Tucker, , 1989(Tucker, , 1993(Tucker, , 1994Tucker and Stirton, 1991) flowers appear radially symmetrical at midstage.…”

Section: Discussionmentioning

confidence: 99%

“…The Cadia/Calpurnia clade is sister to Sophora, a genus with papilionoid flowers (Tucker, 1994). However, in several Sophora species and other zygomorphic papilionoids (Tucker, 1984(Tucker, , 1985(Tucker, , 1987(Tucker, , 1989(Tucker, , 1993(Tucker, , 1994Tucker and Stirton, 1991) flowers appear radially symmetrical at midstage. Zygomorphy is expressed late in ontogeny in all of these taxa.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Floral ontogeny in Sophoreae(Leguminosae: Papilionoideae). III. Radial symmetry and random petal aestivation in Cadia Purpurea

Tucker

2002

American J of Botany

Self Cite

View full text Add to dashboard Cite

Floral organogeny and development are described in Cadia purpurea, a legume with radial symmetry, unstable petal aestivation, and free organs, all unusual features among papilionoids. Flowers are usually solitary or, rarely, in few-flowered racemes. No bracteoles are formed. The order of organ initiation is unidirectional in each whorl, and the carpel initiates directly after petal initiation.The petal primordia remain small until all other floral organs have initiated, enlarged, and differentiated. Petal aestivation is variable, unlike the great majority of papilionoid flowers. Petal margins of Cadia grow straight outward rather than some petal margins curving inward inside the adjacent petal as is the case in other papilionoids. When adjacent growing petal margins of Cadia meet, chance determines which petal becomes positioned inside the other. Hence, the pattern of petal aestivation is random.Key words: aestivation; Cadia; Fabaceae; floral development; flower; Leguminosae; Papilionoideae; radial symmetry; Sophoreae.Cadia belongs to papilionoid tribe Sophoreae, long considered one of the most basal but heterogeneous tribes of papilionoid legumes (Polhill, 1981(Polhill, , 1994. The tribe has recently been shown to be nonmonophyletic (Herendeen, 1995;Doyle et al., 2000;Ireland, Pennington, and Preston, 2000) and is currently in the process of dismemberment, with certain woody taxa of sophoroids appearing to be more closely related to some elements of tribes Swartzieae, Dalbergieae, and others (Ireland, Pennington, and Preston, 2000;Pennington et al., 2000Pennington et al., , 2001. Recent molecular-based analyses (Doyle et al., 2000;Pennington et al., 2000Pennington et al., , 2001 place Cadia as sister to Calpurnia (tribe Podalyrieae) but embedded within a clade containing other sophoroid taxa. Cadia, a genus of small shrubs from Arabia, Madagascar, and eastern Africa, has long been of interest because of its radial floral symmetry and atypically unstable petal aestivation (van der Maesen, 1970;Tucker, 1984Tucker, , 1987, in contrast to the prevailingly uniform, descending cochleate aestivation of nearly all other Papilionoideae.The tribe Sophoreae sensu Polhill (1981Polhill ( , 1994 includes the putatively least specialized and most plesiomorphic taxa of the large subfamily Papilionoideae of legumes. As originally conceived by Bentham (1841) the tribe was considered transitional between papilionoids and the subfamily Caesalpinioideae. The emphasis on the heterogeneity in Sophoreae (Polhill, 1981) prompted examination of the pollen structure (Ferguson, Schrire, and Shepperson, 1994), endothecial characters (Manning and Stirton, 1994), and wood (Gasson, 1994). Because of the recent surge in interest in taxa of Sophoreae sensu lato (s.l.), the floral ontogeny of Cadia purpurea Ait. is presented, together with updated comments on its putatively plesiomorphic character states. MATERIALS AND METHODSYoung inflorescences and flower buds of all sizes were collected and preserved in formalin-acetic acid-70% ethyl alcohol ...

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Floral ontogeny in Sophoreae(Leguminosae: Papilionoideae). III. Radial symmetry and random petal aestivation in Cadia Purpurea

Tucker

2002

American J of Botany

Self Cite

View full text Add to dashboard Cite

show abstract

“…Vogel: Mansano 50, Brazil, São Paulo, Campinas, Campus da UNICAMP. One species of each was considered representative because floral development in a genus usually does not vary significantly among species (see Tucker [1994], which compares development of several species of Sophora). Identifications were made by the first author.…”

Section: Methodsmentioning

confidence: 99%

“…Floral ontogeny has been studied in other Swartzieae sensu Polhill (1994) (on Ateleia, Tucker [1990]; on Swartzia, Tucker [1987]; Tucker [unpublished data] on Swartzia, Cyathostegia, Baphiopsis, Mildbraediodendron) and Sophoreae sensu Polhill (1994) (Tucker, 1993(Tucker, , 1994(Tucker, , 2002. None of the Lecointea clade sensu Herendeen (1995) has been available for floral ontogenetic study until now.…”

mentioning

confidence: 99%

Floral ontogeny of Lecointea, Zollernia, Exostyles, and Harleyodendron (Leguminosae: Papilionoideae: Swartzieae s.l)

Mansano

Tucker

Tozzi

2002

American J of Botany

Self Cite

View full text Add to dashboard Cite

Floral initiation and development were examined using scanning electron microscopy in Exostyles venusta, Harleyodendron unifoliolatum, Lecointea hatschbachii, and Zollernia ilicifolia. Common features include (1) unidirectional sepal initiation, (2) simultaneous petal initiation, (3) unidirectional initiation of each stamen whorl (except in the antesepalous whorl in Lecointea and Exostyles), (4) overlap in time of initiation of the two stamen whorls, and (5) initiation of the carpel concurrently with petals. Significant developmental features include (1) the first sepal median abaxial in all except Lecointea where it is non-median abaxial; (2) intraspecific variation in petal aestivation in Exostyles, Harleyodendron, and Lecointea; (3) initiation of antepetalous stamens before the antesepalous ones in Zollernia, Exostyles, and Lecointea; and (4) ovule initiation before the carpel margins are fused in Exostyles. The stamen sequence has not been found in any other legumes. The following late developmental events distinguish the four genera from each other: copious hairs hold the anthers together as a domelike structure at anthesis in Harleyodendron; zygomorphy in Zollernia results from differing petal reflexion; late hypanthium in Exostyles, Lecointea, and Holocalyx (no hypanthium in Harleyodendron or Zollernia); and reflexed sepal lobes in Exostyles, Harleyodendron, and Zollernia but not in Holocalyx and Lecointea. The genera studied here are ontogenetically more similar to taxa of Sophoreae than to other Swartzieae that have been investigated. None of the taxa studied here has a ring meristem, the structure that characterizes the remaining swartzioid taxa studied elsewhere.

show abstract

“…Os estádios que resultam na formação dos órgãos florais podem ser divididos em (a) iniciais ou organogenéticos -determinação da localização de órgãos, do número de órgãos de cada tipo e da coordenação de sua iniciação; (b) intermediários ou de formação -diferenciação de formas, ou seja, durante este período os órgãos florais começam a expressar as suas formas, todos os órgãos já se encontram formados; e (c) finais ou de diferenciação -diferenciação de células e especializações (Tucker 1987(Tucker , 1990(Tucker , 1993(Tucker , 1994.…”

Section: -Introduçãounclassified

Desenvolvimento floral de Parkia multijuga e Stryphnodendron adstringens, espécies andromonoicas de Leguminosae (Mimosoideae)

Pedersoli¹

View full text Add to dashboard Cite

Flowers and flower buds of various sizes were collected and processed for observations in scanning electron microscopy (SEM) and light microscopy (LM). The development of floral organs begins with the emergence of five sepal primordia in the floral meristem from the abaxial side (P. multijuga) and from the adaxial side (S.adstringens) in which in some buds, a sixth primordia arises late; five petal primordia simultaneously in P. multijuga and bidirectionally in S. adstringens, a carpel primordium emergence concomitantly to five antesepalous stamens primordia in P. multijuga, and after the petal formation in S. adstringens, and five antepetalous stamen primordium. In the final stages of the development, the stamens initiated in two whorls, one outer (antesepalous) and the other innermost (antepetalous), are arranged in a single whorl. However, the antesepalous stamens, which emerged first, are a little more elongated than the antepetalous ones. In P. multijuga the fillets join in the base while its elongation, forming a tube, which thereafter becomes adnate to the petals. In hermaphrodite flowers, in both species, the carpel primordium emerges, stretches, the carpel cleft closes and, soon after, the style begins its differentiation. In staminate flowers, the carpel primordium begins and stretches, but the carpel cleft does not close and the carpel does not end its development. In the mature stage, the hermaphrodite flowers present fully differentiated stigmas, while in the staminate flowers, the carpel primordium remains as a rudiment at the base of the bud. In this case, there is no initiation of any ovule. We conclude that staminate flowers in both species arise by carpel abortion and not from inception, alike the other members of Mimosoideae.

show abstract

Floral ontogeny in Sophoreae (Leguminosae: Papilionoideae): II. Sophora sensu lato (Sophora group)

Cited by 21 publications

References 10 publications

Floral ontogeny in Sophoreae(Leguminosae: Papilionoideae). III. Radial symmetry and random petal aestivation in Cadia Purpurea

Floral ontogeny in Sophoreae(Leguminosae: Papilionoideae). III. Radial symmetry and random petal aestivation in Cadia Purpurea

Floral ontogeny of Lecointea, Zollernia, Exostyles, and Harleyodendron (Leguminosae: Papilionoideae: Swartzieae s.l)

Desenvolvimento floral de Parkia multijuga e Stryphnodendron adstringens, espécies andromonoicas de Leguminosae (Mimosoideae)

Contact Info

Product

Resources

About