Duguetia salicifolia R.E.Fr.
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Authority
Maas, Paulus J. M., et al. 2003.
(Annonaceae). Fl. Neotrop. Monogr. 88: 1-274 pp. (Published by NYBG Press) -
Family
Annonaceae
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Scientific Name
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Type
Type: Brazil. São Paulo, Serra do Mar, Fazenda Campo Grande, 18 Nov 1892 (fl, fr), Edwall 1988 (holotype, S; isotypes, B, C).
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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.
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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.
He and Maas (1993) pointed out the likeness between D. salicifolia, D. microphylla, and D. riedeliana. Further notes concerning D. salicifolia are found in the chapter on Internal Relationships (Fig. 37, cluster 4). -
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|