Monographs Details:
Authority:
Rohwer, Jens G. 1993. Lauraceae:. Fl. Neotrop. Monogr. 60: 1-332. (Published by NYBG Press)
Rohwer, Jens G. 1993. Lauraceae:
Family:
Lauraceae
Lauraceae
Synonyms:
Nectandra purusensis Coe-Teix.
Nectandra purusensis Coe-Teix.
Description:
Species Description - Trees, to 30 m, rarely shrubs. Branchlets 5 cm below terminal bud (2.3-)3.2-5(-6.5) mm in diam., initially (often very pronounced) irregularly angular but sometimes quickly becoming terete, with short, ± appressed hairs, moderately dense or sparser immediately below the terminal bud, quickly becoming sparse to glabrous, at the very tip occasionally with a few longer (up to 0.8 mm), ± ascending hairs; terminal buds ± elongate, (3-)6-12 mm long, 1.2-2.5 mm thick, not rarely sprouting at anthesis, densely covered with short to long (up to 0.8 mm), appressed hairs. Petioles 9-24(-30) mm long, 1.5-3.5 mm thick, ± roundish below, slightly convex to shallowly canaliculate above, indument ± as on twigs but sometimes clearly denser above, (sub) glabrescent. Leaves alternate, usually (oblanceolate to oblong, rarely elliptic, widest 2/5-2/3 from the base, (12-)15-32(-44) cm long, (3.5-)4-12 (-16) cm wide, 2.4-4.7(-5.5) times longer than wide, tip ± acuminate (acumen short to long and narrow), base acute to attenuate, rarely obtuse, margin flat to bent down, rarely slightly recurved, midrib ± distinctly convex above, usually in a slight impression, very prominent below, secondary veins (7-)9-11(-13) pairs, diverging at (35-)40-70°, in mid-lamina running at an angle of (20-)25-45(-50)° to the midrib, the distal ones often loop-connected near the margin, level to impressed above, sometimes convex, prominent below, tertiary venation scalariform, rarely with a few, short intersecondaries, levello very slightly raised above, ± raised below. Indument consisting of short, appressed hairs, plus sometimes a few longer hairs (up to 0.6 mm) on veins, in young leaves sparse to subglabrous above, often slightly denser on veins, ± sparse below, often slightly denser along the veins, sometimes with tufts of often slightly reddish, ± erect hairs (up to 0.6 mm) in the axils of the secondary veins, older leaves glabrescent above, indument scarcely changed to subglabrous below. Gland dots at least in young leaves usually visible to distinct on both sides, in mature leaves often scarcely to not at all visible. Inflorescences in the axils of distal foliage leaves, occasionally pseudoterminal (terminal bud displaced to a lateral position), (0.9-)1.3-3(-3.4) mm in diam. at the base, on a twig of (2-)2.5-5(-6.5) mm diam., (3.5-)7-18(-22) cm long, reaching ca. 1/5-3/4 the length of the subtending leaf; peduncle (2-)3.5-9.5(-11) cm long, i.e., ca. 1/2-3/5 the length of the inflorescence, lateral branches 2-5(-6) below the terminal cluster of cymes, branched (1-)2-5 times, indument on peduncle ± as on twigs, ± sparse, closer to the flowers changing into a dense, ± whitish indument of short, appressed to ± ascending hairs. Pedicels (1.5-)2.3-9(-14) mm long, 0.4-0.9 mm thick. Flowers (6.5-)7.5-12(-14) mm in diam., tepals ± elliptic to elongate-obovate, ca. (3-)3.3-5(-7) mm long and ca. (1.7-)2.2-3 (-4) mm wide, heavily papillose on the inside surface. Stamens ca. 1.4-2.2 mm long including a filament of up to 0.3 mm length, anthers papillose, rather elongate, in the first whorl ± ovate with a ± parabolic sterile tip, in the second whorl ovate to trullate with an acute to parabolic tip, in the third whorl elongate pentagonal, obovate, or almost rectangular, with an obtuse to truncate tip. Staminodes reaching ca. 1/3-3/5 the length of the stamens, triangular to slightly clavate, papillose, occasionally very indistinctly glandular on adaxial side, united with the inner stamens only at the very base. Pistil ca. 1.9-3.2 mm long, ovary ± ellipsoid, glabrous or rarely with a few hairs, style ca. as long as the ovary to clearly longer (by ca. 1/2), glabrous to papillose. Receptacle cupshaped (or ellipsoid inch bases of stamens and staminodes), glabrous or with some tightly appressed hairs inside. Berry ellipsoid, ca. 1317 mm long, 10-11 mm in diam., cupule deeply bowl-shaped, ca. 10-14 mm in diam. and ca. 4-7.5 mm high, pedicel ± slightly thickened.
Species Description - Trees, to 30 m, rarely shrubs. Branchlets 5 cm below terminal bud (2.3-)3.2-5(-6.5) mm in diam., initially (often very pronounced) irregularly angular but sometimes quickly becoming terete, with short, ± appressed hairs, moderately dense or sparser immediately below the terminal bud, quickly becoming sparse to glabrous, at the very tip occasionally with a few longer (up to 0.8 mm), ± ascending hairs; terminal buds ± elongate, (3-)6-12 mm long, 1.2-2.5 mm thick, not rarely sprouting at anthesis, densely covered with short to long (up to 0.8 mm), appressed hairs. Petioles 9-24(-30) mm long, 1.5-3.5 mm thick, ± roundish below, slightly convex to shallowly canaliculate above, indument ± as on twigs but sometimes clearly denser above, (sub) glabrescent. Leaves alternate, usually (oblanceolate to oblong, rarely elliptic, widest 2/5-2/3 from the base, (12-)15-32(-44) cm long, (3.5-)4-12 (-16) cm wide, 2.4-4.7(-5.5) times longer than wide, tip ± acuminate (acumen short to long and narrow), base acute to attenuate, rarely obtuse, margin flat to bent down, rarely slightly recurved, midrib ± distinctly convex above, usually in a slight impression, very prominent below, secondary veins (7-)9-11(-13) pairs, diverging at (35-)40-70°, in mid-lamina running at an angle of (20-)25-45(-50)° to the midrib, the distal ones often loop-connected near the margin, level to impressed above, sometimes convex, prominent below, tertiary venation scalariform, rarely with a few, short intersecondaries, levello very slightly raised above, ± raised below. Indument consisting of short, appressed hairs, plus sometimes a few longer hairs (up to 0.6 mm) on veins, in young leaves sparse to subglabrous above, often slightly denser on veins, ± sparse below, often slightly denser along the veins, sometimes with tufts of often slightly reddish, ± erect hairs (up to 0.6 mm) in the axils of the secondary veins, older leaves glabrescent above, indument scarcely changed to subglabrous below. Gland dots at least in young leaves usually visible to distinct on both sides, in mature leaves often scarcely to not at all visible. Inflorescences in the axils of distal foliage leaves, occasionally pseudoterminal (terminal bud displaced to a lateral position), (0.9-)1.3-3(-3.4) mm in diam. at the base, on a twig of (2-)2.5-5(-6.5) mm diam., (3.5-)7-18(-22) cm long, reaching ca. 1/5-3/4 the length of the subtending leaf; peduncle (2-)3.5-9.5(-11) cm long, i.e., ca. 1/2-3/5 the length of the inflorescence, lateral branches 2-5(-6) below the terminal cluster of cymes, branched (1-)2-5 times, indument on peduncle ± as on twigs, ± sparse, closer to the flowers changing into a dense, ± whitish indument of short, appressed to ± ascending hairs. Pedicels (1.5-)2.3-9(-14) mm long, 0.4-0.9 mm thick. Flowers (6.5-)7.5-12(-14) mm in diam., tepals ± elliptic to elongate-obovate, ca. (3-)3.3-5(-7) mm long and ca. (1.7-)2.2-3 (-4) mm wide, heavily papillose on the inside surface. Stamens ca. 1.4-2.2 mm long including a filament of up to 0.3 mm length, anthers papillose, rather elongate, in the first whorl ± ovate with a ± parabolic sterile tip, in the second whorl ovate to trullate with an acute to parabolic tip, in the third whorl elongate pentagonal, obovate, or almost rectangular, with an obtuse to truncate tip. Staminodes reaching ca. 1/3-3/5 the length of the stamens, triangular to slightly clavate, papillose, occasionally very indistinctly glandular on adaxial side, united with the inner stamens only at the very base. Pistil ca. 1.9-3.2 mm long, ovary ± ellipsoid, glabrous or rarely with a few hairs, style ca. as long as the ovary to clearly longer (by ca. 1/2), glabrous to papillose. Receptacle cupshaped (or ellipsoid inch bases of stamens and staminodes), glabrous or with some tightly appressed hairs inside. Berry ellipsoid, ca. 1317 mm long, 10-11 mm in diam., cupule deeply bowl-shaped, ca. 10-14 mm in diam. and ca. 4-7.5 mm high, pedicel ± slightly thickened.
Discussion:
Uses. The wood is used in (interior) construction.Nectandra pulverulenta is recognized by its mostly large, nearly glabrous leaves, nearly glabrous twigs, and by the relatively large flowers with a dense, ± whitish indument on the outside. From N. hihua, which also may show the above characters, N. pulverulenta is easily separated by its rather elongate anthers with their locules entirely in the lower half, and by the rather long style.The closest relatives of Nectandra pulverulenta are N. heterotricha and N. canescens. The former looks almost like a small-leaved form of N. pulverulenta, except for the dense indument on the upper surface of its young leaves. Nectandra canescens also shows this dense indument, but differs from both N. heterotricha and N. pulverulenta by an abruptly obtuse leaf base and by a denser, longer, and more erect indument on the young twigs. There are, however, a few intermediates between N. pulverulenta and N. canescens. Irwin 48232 from Amapa is reminiscent of Nectandra canescens in having many long, ± ascending hairs on its twigs and on the veins of its leaves, but it shows the attenuate leaf base of N. pulverulenta. In Kubitzki 75-67 the indument is only slightly denser than usual in N. pulverulenta, but the leaf base is abruptly if indistinctly obtuse. Amaral 369 is somewhat intermediate but still more similar to N. pulverulenta in both of these characters. It differs, however, from all other collections of this species by a distinctly longer and more spreading indument on the flowers.
Uses. The wood is used in (interior) construction.Nectandra pulverulenta is recognized by its mostly large, nearly glabrous leaves, nearly glabrous twigs, and by the relatively large flowers with a dense, ± whitish indument on the outside. From N. hihua, which also may show the above characters, N. pulverulenta is easily separated by its rather elongate anthers with their locules entirely in the lower half, and by the rather long style.The closest relatives of Nectandra pulverulenta are N. heterotricha and N. canescens. The former looks almost like a small-leaved form of N. pulverulenta, except for the dense indument on the upper surface of its young leaves. Nectandra canescens also shows this dense indument, but differs from both N. heterotricha and N. pulverulenta by an abruptly obtuse leaf base and by a denser, longer, and more erect indument on the young twigs. There are, however, a few intermediates between N. pulverulenta and N. canescens. Irwin 48232 from Amapa is reminiscent of Nectandra canescens in having many long, ± ascending hairs on its twigs and on the veins of its leaves, but it shows the attenuate leaf base of N. pulverulenta. In Kubitzki 75-67 the indument is only slightly denser than usual in N. pulverulenta, but the leaf base is abruptly if indistinctly obtuse. Amaral 369 is somewhat intermediate but still more similar to N. pulverulenta in both of these characters. It differs, however, from all other collections of this species by a distinctly longer and more spreading indument on the flowers.
Distribution:
French Guiana South America| Ecuador South America| Pastaza Ecuador South America| Peru South America| Amazonas Peru South America| Cusco Peru South America| Junín Peru South America| Loreto Peru South America| Madre de Dios Peru South America| San Martín Peru South America| Brazil South America| Acre Brazil South America| Amapá Brazil South America| Amazonas Brazil South America| Mato Grosso Brazil South America| Pará Brazil South America| Bolivia South America| Pando Bolivia South America|
French Guiana South America| Ecuador South America| Pastaza Ecuador South America| Peru South America| Amazonas Peru South America| Cusco Peru South America| Junín Peru South America| Loreto Peru South America| Madre de Dios Peru South America| San Martín Peru South America| Brazil South America| Acre Brazil South America| Amapá Brazil South America| Amazonas Brazil South America| Mato Grosso Brazil South America| Pará Brazil South America| Bolivia South America| Pando Bolivia South America|
Common Names:
anu-sili, bois du tangara, lagarto moena, moena, moena amarilla, moena hoja ancha, louro abac-ate
anu-sili, bois du tangara, lagarto moena, moena, moena amarilla, moena hoja ancha, louro abac-ate