Duguetia salicifolia R.E.Fr.

Authority

Maas, Paulus J. M., et al. 2003. (Annonaceae). Fl. Neotrop. Monogr. 88: 1-274 pp. (Published by NYBG Press)

Family

Annonaceae

Scientific Name

Duguetia salicifolia R.E.Fr.

Type

Type: Brazil. São Paulo, Serra do Mar, Fazenda Campo Grande, 18 Nov 1892 (fl, fr), Edwall 1988 (holotype, S; isotypes, B, C).

Description

Species Description - Tree or shrub, 2.5-15 m tall. Young twigs and petioles totally covered with stellate scales 0.1-0.3 mm in diam. Petioles 1-5 mm long, 1-1.5 mm in diam. Lamina narrowly elliptic, 7-12 cm long, 2-3.5 cm wide, leaf index 2.9-3.9, chartaceous, blackish grey to dull green above, dull, pale brown to greyish brown below, glabrous above, rather densely to densely (or sparsely) covered with stellate scales 0.1-0.5 mm in diam. below, base acute, apex acute to acuminate (acumen to 10 mm long), primary vein impressed above, secondary veins curved, 13-16 on either side of primary vein, raised above, angles with primary vein 65-75°, loopforming at right to acute angles, loops distinct, smallest distance between loops and margin 2-5 mm, tertiary veins raised above. Inflorescences among leaves, leaf-opposed, 1-2-flowered, to sometimes 5-flowered in succession. Indument: pedicels and outer side of bracts, sepals, and petals densely covered with stellate scales 0.2-0.5 mm in diam., inner side of sepals and petals densely covered with stellate hairs 0.1-0.5 mm in diam., inner 1/4 to 1/5 of sepals sparsely so to glabrous, inner 1/4 to 1/6 of petals glabrous. Peduncle 0-1 mm long. Sympodial rachis to 3 mm long. Pedicels 5-10 mm long, 1-2 mm in diam., fruiting pedicels to 20 mm long, to 7 mm in diam. Upper bract at 1/2 to 1/3 of base of pedicel, very broadly triangular-ovate, 1-2 mm long, caducous. Flower buds broadly to very broadly triangular-ovoid, acute. Flowers greenish yellow in vivo. Sepals connate for 15-20%, triangular-ovate to broadly triangular-ovate, 9-11 mm long, 7-8 mm wide, acute. Petals subequal, rhombic-obovate, 16-22 mm long, 7-11 mm wide, acute to apiculate, inner base of inner petals callóse, grooved. Stamens 0.8-1.1 mm long, color unknown, apex of connective discoid, slightly umbonate, 0.5-0.7 x 0.3-0.4 mm, papillate. Carpels 2-2.5 mm long, ovary densely covered with stellate scales, stigma glabrous. Fruit brown in vivo, subglobose, 5.5-8 cm in diam., basal collar composed of 10-15 connate, sterile carpels, 15-30 mm in diam., slightly protruding below the fruit, fertile carpels 60-100, narrowly obtrulloid to obtrulloid, 20-35 mm long, 10-25 mm in diam., free, areoles shallowly to very shallowly pyramidal, 5-8 mm high, obtuse, with a hard, sharp-pointed apex ca. 5 mm long, prominently 5-6-ribbed, verrucose, totally covered with brownish, stellate scales 0.1-0.2 mm in diam. Seeds ellipsoid, 15-22 mni long, 12-16 mm in diam., rounded, yellowish brown, shiny.

Discussion

Duguetia salicifolia, a species restricted to the Brazilian state of São Paulo, is distinguished by small leaves with a rather dense to dense indument of stellate scales on the lower side, and by the very large fruit (to 8 cm in diam.) with very distinct, sharp-pointed carpels.

Distribution

Endemic to the Brazilian state of São Paulo. In montane rain forest; on lateritic soil. At elevations from 800-1100 m. Flowering from September to December, fruiting in April, September, and November.

Brazil South America| São Paulo Brazil South America|