Passiflora tessmannii Harms, Notizbl. Bot. Gart. Berlin-Dahlem 9: 978. 1926.

Mezzonato-Pires, Ana Carolina, Milward-de-Azevedo, Michaele Alvim, Mendonca, Claudia Barbieri Ferreira & Goncalves-Esteves, Vania, 2018, Taxonomy, palynology and distribution notes of seven species of Passiflora L. (Passifloraceae s. s.) newly recorded from Brazil, PhytoKeys 95, pp. 1-14 : 8-10

Passiflora tessmannii Harms, Notizbl. Bot. Gart. Berlin-Dahlem 9: 978. 1926. Figs 2M, N , 3K, L

Descriptions.

Lianas; tendrils absent. Stipules not seen. Petioles with two glands on the terminal end of the adaxial side. Blades 6.2-11 × 4-8 cm, chartaceous, elliptic to ovate to oblong-elliptic, apex emarginate, mucronate, base cuneate to round, abaxially puberulous, adaxially glabrous, except for the midvein; margins revolute, non-undulate, glands not seen; 10-14 pairs of secondary veins, arcuate. Bracts diminute, triangular, alternate. Flowers arranged in pairs, hypanthium campanulate-cylindric; sepals linear-lanceolate, green; petals linear-lanceolate, white; corona with 2 series of filaments, white at base, yellowing at mid length, with vinaceous spots at apex, filaments of first series linear, apex widely falcate, attenuate, filaments of second series subulate, apex acute; operculum straight, with irregular slits, non-tubular, included, filaments with fimbriate apex, papillose; androgynophore with trochlea; ovary oblongoid to obovoid, velutine to pilose, with hairs restricted to the veins. Fruits 6.3-6.4 × 2.3-2.4 cm, ellipsoid, puberulous.

Palynology.

Pollen grains medium-sized (ca. 46.0 µm), oblate spheroidal, 6-colporate, colpi long, narrow, three endoaperture lalongate (ca. 4.3 × 20.4 µm) unique for each pair of ectoaperture, sexine reticulate, heterobrochate; muri (ca. 1.0 µm) simple columellate, sinuous, continuous, with perforations, without high columellae, not apparent, tectum surface slightly curved, lumina not ornamented, small (ca. 2.4 µm diam.) (Fig. 3K, L ).

Specimens examined.

BRAZIL. Amazonas: Manaus, Igarape do Crespo , [3°6'7"S, 60°1'30"W], 04 Sep 1945 [fl], A. Ducke 1749 (IAN, NYBG, R); Itacoatiara-Manaus, Reserva Florestal Ducke, km 26, 2°53'0"S, 59°58'0"W, 10 Oct 1995 [bt, fl], C.A. Sothers and E.da C. Pereira 612 (INPA, MBM, MG, UEC); km 26, 2°53'0"S, 59°58'0"W, 27 Nov 1996, [bt, fl], M.J.G. Hopkins et al. 1609 (IAN, INPA, NYBG, SP, UB); next to road the Acará, [3°8'35"S, 58°26'39"W], 19 Dec 1997 [bt, fl], M.A.D. Souza and M.J.G. Hopkins 514 (INPA, SPF) .

Distribution and ecology.

It is known for Ecuador and Peru, being herein recorded for the state of Amazonas, municipality of Manaus, localities of Igarapé do Crespo and Adolpho Ducke Forest Reserve. It is found growing in lowland forests and Terra Firme and Campinarana formations, in sandy soils, reaching 18 m.

Taxonomic comments.

Passiflora tessmannii belongs to P. subg. Astrophea sect. Pseudoastrophea . Until the present study, the Brazilian specimens of P. tessmannii were erroneously identified as P. hexagonocarpa , due to conflicting taxonomic characters. This confusion caused this species to be treated as P. hexagonocarpa in the Flora da Reserva Ducke (Hopkins and Sousa 1999). Passiflora tessmannii possesses conical trochlea with undulated margins, corona clearly composed of two series, outer filaments linear in shape, with apex widely falcate and attenuate and inner filaments subulate. The pollen grains possess reticulate sexine with small lumina, similarly to most species of P. subg. Astrophea sect. Pseudoastrophea and, according to Mezzonato-Pires et al. (2017), the pollen is included in the type IV pollen group.

Figures

Figure 2. Illustrations of leaves and flowers in longitudinal section. A, B Passiflora amoena (S. V. Costa Neto et al. 2818, HAMAB) C, D Passiflora fuchsiiflora (S. Sakagawa et al. 248, INPA) E, F Passiflora jussieui (D. C. Daly et al. 7423, UPCB) G, H Passiflora ovata (S. Sakagawa et al. 668, INPA) I, J Passiflora plumosa (C. A. Cid et al. 561, MG) K, L Passiflora quelchii (R. C. Forzza et al. 8321, RB) M, N Passiflora tessmannii (C. A. Sothers & E. C. Pereira 612, INPA).

Figure 3. Photomicrographs and electron photomicrographs of pollen grains of the species of Passiflora. A, B Passiflora amoena C, D Passiflora fuchsiiflora E, F Passiflora jussieui G, H Passiflora ovata I, J Passiflora quelchii K, L Passiflora tessmannii A, C, E, G, K general aspect of polar view B, F, H, I, L general aspect of equatorial view, D and J ornamentation detail. Scale bars: 10 µm (C, E, F, G, H, I, K, L); 5 µm (A, B, J); 1 µm (D).