Diplopterys A. Juss.

de Almeida, Rafael F., de Morais, Isa L., Alves-Silva, Thais, Antonio-Domingues, Higor & Pellegrini, Marco O. O., 2024, A new classification system and taxonomic synopsis for Malpighiaceae (Malpighiales, Rosids) based on molecular phylogenetics, morphology, palynology, and chemistry, PhytoKeys 242, pp. 69-138 : 69-138

2.9. 6. Diplopterys A. Juss. in Deless., Icon. Sel. Pl. 3: 20, pl. 33. 1837.

Figs 8 S , 9 O , 11 A

= Jubistylis Rusby , Mem. New York Bot. Gard. 7: 273. 1927. Type species: Jubistylis mollis Rusby [= Diplopterys lutea (Ruiz ex Griseb.) W. R. Anderson & C. Davis ].

Type species.

Diplopterys paralias A. Juss. [= Diplopterys pauciflora (G. Mey.) Nied. ]

Notes.

Diplopterys comprises 31 currently accepted species (11 threatened species; Suppl. material 1) of shrubs or lianas endemic to rainforests, savannas, and seasonally dry tropical forests from Mexico (North America) to Argentina (South America; POWO 2024). For an identification key for all species of Diplopterys , see Gates (1982).

Figures

Figure 8. Sepals, glands, and petals of Malpighiaceae flowers A sepals with rounded apex of Hiptage benghalensis and sessile sepal gland B sepals with acute apex of Christianella multiglandulosa and sessile sepal glands C sepals with acute apex of Byrsonima gardneriana and sessile sepal glands D stalked sepal glands of Heladena multiflora E white petals of Acmanthera latifolia F pale yellow glands of Bunchosia glandulifera G yellow glands of Mcvaughia sergipana H pale green glands of Bronwenia megaptera I green glands of Camarea axillaris J yellow and deflexed petals of Byrsonima sericea K white glands of Acmanthera parviflora L pink glands of Heteropterys rubiginosa M brown glands of Amorimia pellegrinii N red glands of Niedenzuella poeppigiana O yellow and patent petals of Ptilochaeta bahiensis P oval petal limb of Galphimia gracilis Q elliptic petal limb of Heteropterys oberdanii R obovate petal limb of Bronwenia megaptera S pubescent petal surface of Diplopterys bahiana T orange-red petals of Tetrapterys phlomoides U entire margin of the petal of Heteropterys oberdanii V erose margin of the petal of Bronwenia megaptera W fimbriate margin of the petal of Schwannia schwannioides X dentate margin of the petal of Peixotoa hispidula Y glandular-fimbriate margin of the petal of Alicia anisopetala Z lilac petals of Mascagnia lilacina (A, C, F – H, I, J, L – S, U – W by R. F. Almeida; B, N, T, Y by M. O. O. Pellegrini; D by A. Francener; E by R. Goldenberg; Z by O. J. A. Ayala).

Figure 9. Androecium and gynoecium of Malpighiaceae A stamen of Banisteriopsis multifoliolata showing filament in green, anther in orange, glandular connective in blue, and pollen sacs in yellow B scanning electron micrograph of an anther of Banisteriopsis multifoliolata C SEM of a pollen grain of Banisteriopsis multifoliolata showing colpi in blue and endoaperture in red D heteromorphic stamen ring with 10 fertile stamens of Banisteriopsis multifoliolata E homomorphic stamen ring of Bronwenia megaptera with 10 fertile stamens F heteromorphic stamen ring of Peixotoa hispidula showing 5 fertile stamens and 5 staminodes in yellow G 6 fertile and free stamens of Schwannia hexandra H gynoecium of Banisteriopsis multifoliolata showing ovary in lilac, styles in blue and stigmas in yellow I uncinate apex of styles of Amorimia septentrionalis J truncate style apex of Amorimia rigida K subulate apex of style of Byrsonima sericea L 3 parallel and erect styles of Bronwenia megaptera M single curved style of Schwannia hexandra N 3 divergent styles of Stigmaphyllon blanchetii with foliate apices O 3 erect, slightly curved, and pubescent styles of Diplopterys lutea P 3 divergent styles of Stigmaphyllon lalandianum with reduced foliate apices Q 3 divergent styles of Stigmaphyllon glabrum without foliate apex (all line drawings by K. Souza; SEMs by R. F. Almeida; all scales: 1 mm, except for the pollen grain: 10 µm).

Figure 11. Types of winged schizocarpic fruits in Malpighiaceae A single dorsal winged mericarp of Diplopterys pubipetala showing lateral wings B detail of part of the winged mericarp of Banisteriopsis argyrophylla C, D 1 dorsal winged mericarp (s) of Heteropterys byrsonimifolia E winged mericarp of Peixotoa catharinensis showing lateral winglets F winged mericarp of Amorimia candidae with two lateral wings more developed than the reduced dorsal wing G winged mericarp of Lophopterys floribunda H winged mericarp of Carolus chasei with two lateral wings more developed (dorsal wing absent) I winged mericarp of Mascagnia sepium with 1 lateral orbicular wing J winged mericarp of Tetrapterys phlomoides with 4 free, lateral wings (superior ones longer, inferior ones shorter) K winged mericarp of Glicophyllum cardiophyllum with 4 free, lateral wings (superior ones shorter, inferior ones longer) L winged mericarp of Niedenzuella acutifolia with 4 free, equalling lateral wings M winged mericarp of Hiptage benghalensis with three free, lateral wings more developed (photographs A by A. Popovkin; B, E, I, J by M. O. O. Pellegrini; C, D, F, H, K, L by R. F. Almeida; G by G. Shimizu; M by G. Cahyadi).