Ptilochaeta Turcz., Bull. Soc. Imp. Naturalistes

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

2.4. 3. Ptilochaeta Turcz., Bull. Soc. Imp. Naturalistes Moscou 16: 52. 1843.

Fig. 8 O

Type species.

Ptilochaeta bahiensis Turcz.

Notes.

Ptilochaeta comprises only three currently accepted species (no threatened species; Suppl. material 1) of trees endemic to the seasonally dry tropical forests of Argentina, Bolivia, Brazil, and Paraguay, South America ( POWO 2024). After carefully analysing all type specimens of this genus, Ptilochaeta densiflora Nied. is proposed here as a new synonym of Ptilochaeta nudipes Griseb. An identification key for most species of Ptilochaeta can be found in Almeida et al. (2020) for Brazil.

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).