Passiflora

Passiflora subgenus Astrophea (DC.) Mast. Figs 2–3 Passiflora subgenus Astrophea (DC.) Mast. (Masters 1871: 629). — Passiflora section Astrophea DC. (de Candolle 1822: 435). (69 spp.) Taxonomic description Vines slender to woody, shrubs, or trees; monoecious; tendrils absent or present (in most species), entire, without adhesive disks; stipules minute, most often deciduous; glands 2, at or near the apex or on the abaxial surface at the leaf–petiole junction; leaves simple, entire, ocelli absent; main rib 1; inflorescences 1-flowered, 2-flowered, or racemose; bracts 3, minute, most often deciduous; hypanthium cylindrical, cylindrical-campanulate, funnelform, or campanulate; flowers whitish, yellowish-orange, pink, or orange to reddish-orange, corona of the same color; sepals 5; petals 5; corona with (1)2–many series of filaments; operculum erect or flexed, tubular or not, papillate or not, fimbriate, lacerate, laciniate, flabellate; nectariferous disk absent; limen absent; trochlea present or absent, stamens 5; styles 3, stigmas 3; fruit a berry (Fig. 2). Pollen description Pollen grains medium or large; isopolar; subprolate, oblate-spheroidal, or prolate-spheroidal; polar area small or large; amb subcircular, circular, or subtriangular; 6-colporate; colpi short or long, narrow or wide; endoapertures 3, lalongate, one for each pair of colpi; pontopercula 3; mesocolpia 3; sexine diversely ornamented, intectate (granulate-baculate-spinulose), partially tectate, muri around apertures in higher or lower amounts; sexine duplicolumellate, with lumina lacking; pila and bacula present and very conspicuous or pila densely distributed and conspicuous and bacula sparsely distributed, or semitectate (muri continuous or discontinuous, simplicolumellate or duplicolumellate; lumina large (11.3–24.5 µm) or small (1.2–8.6 µm); bacula and/or pila present or absent). Sexine thicker than nexine, total exine 1.9–7.6 µm (Fig. 3).