Passiflora

Mezzonato-Pires, Ana Carolina, Bernacci, Luís Carlos, Teixeira, Gabriel Henrique Gomes De Souza Freitas, Cruz, Priscila de Freitas, Pacheco, Georgia, Mendonça, Cláudia Barbieri Ferreira & Gonçalves-Esteves, Vania, 2025, Palynological characterization and taxonomical delimitation of the subgenera within Passiflora L. (Passifloraceae: Malpighiales), the largest genus of lianas in the Neotropics, European Journal of Taxonomy 981, pp. 239-264 : 249

Passiflora subgenus Deidamioides (Harms) Killip

Figs 5–6

Passiflora subgenus Deidamioides (Harms) Killip ( Killip 1938: 25). — Passiflora section Deidamioides Harms ( Harms 1923: 58).

(6 spp.)

Taxonomic description

Vines slender to woody; monoecious; tendrils missing or present (in most species), entire, adhesive disks present or absent; stipules minute (0.1–4 × 0.1–2 mm); glands 2–4–6, at the base of the lamina, below the lamina, near the base or middle of the petiole, or distributed in pairs near the petiole; leaves single, entire, or 5–9-composite; ocelli absent; main rib 1; inflorescences 1-flowered, 2-flowered, or racemose; bracts 3, very narrow (up to 2 mm), generally short (up to 5(7) mm) but longer in P. contracta Vitta (up to 20 mm), bracteoles present; hypanthium shortly campanulate, campanulate to infundibuliform; flowers whitish, white-green, yellow, with corona whitish to yellowish, reddish, lilac, and orange; sepals 5; petals 5; corona with 2–5 series of filaments; operculum plicate or not, apex laciniate, fimbriate; nectariferous disk present or absent; limen tubular, cupuliform, membranaceous; trochlea present or absent, stamens 5; styles 3–4, stigmas 3–4; fruit a berry ( Fig. 5 ).

Pollen description

Pollen grains medium or large; isopolar; subprolate, oblate-spheroidal, or prolate-spheroidal; polar area small; amb subcircular or subtriangular; 6-colporate; colpi long and narrow; endoapertures 3, lalongate, one for each pair of colpi or endoapertures 6, circular, one for each colpus; pontopercula 3, mesocolpia 3; sexine semitectate (muri continuous or discontinuous, simplicolumellate; lumina small (1.0–10.4 µm); bacula present). Sexine as thick as or thicker than nexine, total exine 2.4–5.6 µm ( Fig. 6 ).

Figures

Fig. 5. External morphology of Passiflora subgen. Deidamioides (Harms) Killip. A. Climbing habit of P. deidamioides Harms. B. Leaf blade of P. deidamioides Harms. C. Flower ofP. contracta Vitta. D. Blades and petiole glands of P. contracta Vitta. E. Detail of the inflorescence of P. contracta Vitta. F. Fruit of P. contracta Vitta. G. Flower of P. deidamioides Harms. Photographs were taken by A.C. Mezzonato.

Fig. 6. Pollen grains of Passiflora subgen. Deidamioides (Harms) Killip. A–D. P. contracta Vitta (S.C.San’Ana et al. 265, MBM). E–H. P. deidamioides Harms (F.R.G. Salimena et al. s.n., CESJ 27554). Polar view (A, E–F), equatorial view (B–C, G), detail of ornamentation (D, H). Abbreviations: en = endoaperture; mes = mesocolpium; pt = pontoperculum; arrowheads = apertures. Scale bars: A–C, E–G = 10 µm; D, H = 2 µm.