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2015
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| Online Access: | https://doi.org/10.5281/zenodo.17612496 |
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| author | Maas, P. J. M. Westra, L. Y. T. Guerrero, S. Arias Lobão, A. Q. Scharf, U. Zamora, N. A. Erkens, R. H. J. |
| author_facet | Maas, P. J. M. Westra, L. Y. T. Guerrero, S. Arias Lobão, A. Q. Scharf, U. Zamora, N. A. Erkens, R. H. J. |
| contents | <p><b>165. <i>Guatteria trichostemon</i> R.E.Fr. — Fig. 81; Map 37</b></p><p><i>Guatteria trichostemon</i> R.E.Fr. (1939) 474, f. 24e. — Type: <i>Krukoff 8862</i> (holo S; iso BM, F, G, K, LE, MO, NY, P, U, US), Brazil, Amazonas, Basin of Rio Solimões, Mun. São Paulo de Olivença, Basin of Creek Belém, 26 Oct.–11 Dec. 1936.</p><p>Tree c. 20 m tall, c. 7.5 cm diam; young twigs rather densely covered with curly, erect and appressed, brown hairs, soon glabrous. <i>Leaves</i>: petiole 5–7 mm long, c. 1 mm diam; lamina narrowly elliptic, 6–10 by 2–3 cm (leaf index 2.6–3), chartaceous, not verruculose, shiny, dark blackish brown above, dark brown below, glabrous, but primary vein densely covered with erect, brown hairs above, sparsely to rather densely covered with curly, erect and appressed, brown hairs below, base attenuate, apex acuminate (acumen 5–10 mm long), primary vein impressed above, secondary veins distinct, 10–12 on either side of primary vein, raised above, smallest distance between loops and margin 2–4 mm, tertiary veins raised above, reticulate. <i>Flowers</i> solitary in axils of leaves; pedicels 25–30 mm long, c. 0.5 mm diam, rather densely covered with curly, erect and appressed, brown hairs, articulated at 0.3–0.5 from the base, bracts c. 5, soon falling, not seen; flower buds depressed ovoid; sepals free, broadly ovate-triangular, 3–5 by 3–5 mm, apical part reflexed, outer side rather densely covered with appressed hairs; petals colour not recorded, oblong-elliptic, 7–10 by 4–5 mm, outer side densely covered with curly, erect and appressed, brown hairs; stamens c. 1 mm long, connective shield hairy. <i>Monocarps</i> and <i>seed</i> not seen.</p><p>Distribution — Amazonian Brazil (Amazonas).</p><p>Habitat & Ecology — In non-inundated forest.At an elevation of c. 100 m. Flowering: October to December; fruiting: unknown.</p><p>Vernacular names — None.</p><p>Note — <i>Guatteria trichostemon</i>, only known from the type collection, is well recognizable by its attenuate leaf base, long and slender pedicels, and a hairy connective shield. Fries placed this species in the small sect. <i>Trichostemon</i> (together with <i>G. foliosa</i>, <i>G</i>. <i>maypurensis</i> and <i>G. polyantha</i>), which had as its main features a hairy connective shield, small leaves and long-stipitate monocarps. He compared <i>G. trichostemon</i> with <i>G. stenopetala</i>, but from that species it clearly differs by thinner and distinctly attenuate leaves.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_17612496 |
| institution | Zenodo |
| language | |
| publishDate | 2015 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Guatteria trichostemon R. E. Fr. Flowering 1939 Maas, P. J. M. Westra, L. Y. T. Guerrero, S. Arias Lobão, A. Q. Scharf, U. Zamora, N. A. Erkens, R. H. J. Biodiversity Taxonomy Plantae Tracheophyta Magnoliopsida Magnoliales Annonaceae Guatteria Guatteria trichostemon <p><b>165. <i>Guatteria trichostemon</i> R.E.Fr. — Fig. 81; Map 37</b></p><p><i>Guatteria trichostemon</i> R.E.Fr. (1939) 474, f. 24e. — Type: <i>Krukoff 8862</i> (holo S; iso BM, F, G, K, LE, MO, NY, P, U, US), Brazil, Amazonas, Basin of Rio Solimões, Mun. São Paulo de Olivença, Basin of Creek Belém, 26 Oct.–11 Dec. 1936.</p><p>Tree c. 20 m tall, c. 7.5 cm diam; young twigs rather densely covered with curly, erect and appressed, brown hairs, soon glabrous. <i>Leaves</i>: petiole 5–7 mm long, c. 1 mm diam; lamina narrowly elliptic, 6–10 by 2–3 cm (leaf index 2.6–3), chartaceous, not verruculose, shiny, dark blackish brown above, dark brown below, glabrous, but primary vein densely covered with erect, brown hairs above, sparsely to rather densely covered with curly, erect and appressed, brown hairs below, base attenuate, apex acuminate (acumen 5–10 mm long), primary vein impressed above, secondary veins distinct, 10–12 on either side of primary vein, raised above, smallest distance between loops and margin 2–4 mm, tertiary veins raised above, reticulate. <i>Flowers</i> solitary in axils of leaves; pedicels 25–30 mm long, c. 0.5 mm diam, rather densely covered with curly, erect and appressed, brown hairs, articulated at 0.3–0.5 from the base, bracts c. 5, soon falling, not seen; flower buds depressed ovoid; sepals free, broadly ovate-triangular, 3–5 by 3–5 mm, apical part reflexed, outer side rather densely covered with appressed hairs; petals colour not recorded, oblong-elliptic, 7–10 by 4–5 mm, outer side densely covered with curly, erect and appressed, brown hairs; stamens c. 1 mm long, connective shield hairy. <i>Monocarps</i> and <i>seed</i> not seen.</p><p>Distribution — Amazonian Brazil (Amazonas).</p><p>Habitat & Ecology — In non-inundated forest.At an elevation of c. 100 m. Flowering: October to December; fruiting: unknown.</p><p>Vernacular names — None.</p><p>Note — <i>Guatteria trichostemon</i>, only known from the type collection, is well recognizable by its attenuate leaf base, long and slender pedicels, and a hairy connective shield. Fries placed this species in the small sect. <i>Trichostemon</i> (together with <i>G. foliosa</i>, <i>G</i>. <i>maypurensis</i> and <i>G. polyantha</i>), which had as its main features a hairy connective shield, small leaves and long-stipitate monocarps. He compared <i>G. trichostemon</i> with <i>G. stenopetala</i>, but from that species it clearly differs by thinner and distinctly attenuate leaves.</p> |
| title | Guatteria trichostemon R. E. Fr. Flowering 1939 |
| topic | Biodiversity Taxonomy Plantae Tracheophyta Magnoliopsida Magnoliales Annonaceae Guatteria Guatteria trichostemon |
| url | https://doi.org/10.5281/zenodo.17612496 |