Nectandra wurdackii C.K.Allen & Barneby
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Authority
Rohwer, Jens G. 1993. Lauraceae:
. Fl. Neotrop. Monogr. 60: 1-332. (Published by NYBG Press) -
Family
Lauraceae
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Scientific Name
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Type
Type. Peru. Loreto: Prov. Alto Amazonas, along Río Marañon near Teniente Pinglo, just above Pongo de Manseriche, 250-300 m, 4-7 Oct 1962 (fl, fr imm), Wurdack 2099 (holotype, NY; isotypes, F, US).
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Description
Latin Diagnosis - A congeneribus combinatione foliorum an-gustissime lanceolatorum vel sublinearium cum antheris apice manifesto productis recedit.
Species Description - Shrubs (type specimen from a 3 m shrub; or trees?). Branchlets 5 cm below terminal bud 1.5-2.7 mm in diam., very slightly angular, with pale, short, appressed hairs, initially sparse to intermediate, quickly becoming sparser, older twigs roundish, subglabrescent; terminal buds very narrow, sprouting in the type, with a whitish cover of short, appressed hairs. Petioles 616 mm long, 0.8-1.4 mm thick, roundish and irregularly longitudinally ridged below, ± flat above, with a central ridge or a central furrow, with short, appressed hairs, denser above than below. Leaves alternate, very narrowly lanceolate to almost linear, widest ca. 1/4 from the base to slightly below the middle, 11-22 cm long, 1.1-2.8 cm wide, 6.7-11.3 times longer than wide, the tip tapering towards a very long acumen, base narrowly acute to attenuate, margin very narrowly bent down to slightly recurved, rarely almost flat, midrib slightly convex to prominent above, sometimes in a very slight impression, prominent below, secondary veins (very) slightly convex and often very slightly impressed above, raised below, 6-9 pairs, diverging at 30-40°, in mid-lamina running at an angle of 15-25° or rarely almost parallel to the midrib, tertiary venation finely scalariform, relatively inconspicuous, level or very slightly raised above, slightly raised below, finer venation almost as (little) distinct as the tertiaries. Indument consisting of short, ± appressed hairs, ± sparse from the beginning but slightly denser below than above, older leaves glabrescent above or with some persistent hairs on midrib, indument becoming only slightly sparser but very inconspicuous below. Gland dots moderately distinct in young leaves, later scarcely visible. Inflorescences in the axils of distal leaves, 0.8-1.2 mm in diam. at the base, on a twig of 1-2.8 mm diam., 2.5-7.5 cm long, reaching 1/4-2/5 the length of the subtending leaf; peduncle 1.3-4.5 cm long, i.e., 1/2 to 3/5 the length of the inflorescence, lateral branches 2-4 below terminal cyme, branched (l-)2 times, indument consisting of short, ± appressed hairs, sparse on peduncle, becoming denser closer to the flowers. Pedicels 1-2.3 mm long, 0.50.7 mm thick. Flowers ca. 6-7 mm in diam., tepals ± elliptic to obovate, ca. 2-2.8 mm long and ca. 1.6-2 mm wide, distinctly papillose on the inside surface. Stamens ca. 1-1.5 mm long including the very short filament, anthers papillose, distinctly prolonged beyond the pollen sacs, pentagonal to ovate-elliptic in the first whorl, with an obtuse tip, trullate in the second whorl, with a narrowly acute tip, the third whorl elliptic to roundish-rectangular with an obtuse to broadly rounded tip. Staminodes relatively large, reaching 1/2-2/3 the length of the stamens, thick and papillose, with a constricted base. Pistil ca. 1-1.2 mm long, ovary depressed subglobose and glabrous, style very short, glabrous or slightly papillose. Receptacle hemispherical, with a few very inconspicuous, tightly appressed hairs inside. Berry (known only immature) elliptic, already 9-12 mm long, 5-7 mm in diam., cupule bowl-shaped, ca. 6 mm in diam. and ca. 2.5 mm deep, margin entire.
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Discussion
The most striking character of Nectandra wurdackii is its extremely narrow leaves, which are reminiscent of N. microcarpa or of the most narrow leaved forms of N. cuspidata. Nectandra wurdackii differs from both of these species (and from N. angustifolia, which has more linear leaves still) by having the connective of the anthers very strongly protruding beyond the pollen sacs.
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Distribution
Known only from the type collection.
Peru South America| Loreto Peru South America|