Guatteria fractiflexa Maas & Westra
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publication ID |
https://doi.org/10.3767/000651915X690341 |
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persistent identifier |
https://treatment.plazi.org/id/038387AD-FF81-8535-AE3A-69A39D93F923 |
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treatment provided by |
Felipe |
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scientific name |
Guatteria fractiflexa Maas & Westra |
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69. Guatteria fractiflexa Maas & Westra View in CoL — Fig. 36b View Fig , 40 View Fig ; Map 16
Guatteria fractiflexa Maas & Westra in Erkens et al. (2008) 491,f. 9. — Type: Christenhusz & Cárdenas-Ramires 2110 (holo U; iso LZ,TUR,USM), Peru, San Martín , Cerro Guayrapurina,top of the ridge,steep southfacing slope, 1300 m, 14 Aug. 2002.
Liana, shrub, or small tree to c. 4 m tall, diam not recorded; young twigs mostly with a zigzag pattern, sparsely covered with appressed hairs, soon glabrous. Leaves: petiole 3–5 mm long, 1–2 mm diam; lamina narrowly elliptic, 6–15 by 1.5–5 cm (leaf index 3–6), coriaceous, not verruculose, dull, grey- ish green above, pale brown below, glabrous above, except for some hairs along primary vein, sparsely to rather densely covered with appressed hairs below, base acute to obtuse, slightly oblique, apex long-acute to acuminate (acumen to c. 10 mm long), primary vein impressed above, secondary veins indistinct, 13–20 on either side of primary vein, flat above, smallest distance between loops and margin 1–2 mm, tertiary veins flat above, reticulate. Flowers solitary in axils of leaves; pedicels 10–25 mm long, 1–1.5 mm diam, densely covered with erect to appressed, brown hairs, articulated at 0.2–0.6 from the base, bracts 5–6, soon falling, not seen; flower buds broadly ovoid; sepals free to basally connate, broadly ovate-triangular, 5–6 by 5–5.5 mm, appressed, outer side densely covered with erect to appressed, brown hairs; petals pale yellow to yellow in vivo, narrowly elliptic to narrowly elliptic-obovate, 13–15 by 5–6 mm, outer side densely covered with erect to appressed, brown hairs; stamens c. 1.5 mm long, connective shield papillate to glabrous. Monocarps black in vivo (according to the label of Rodriguez et al. 2740), not seen. Seed not seen.
Distribution — Amazonian Ecuador (Zamora-Chinchipe), Peru (Amazonas, Huánuco, San Martín ).
Habitat & Ecology — In low, primary forest, with many epiphytes, and with a thick layer of moss, roots and leaves, on sandstone soil.At elevations of 320–2190 m. Flowering: Febru- ary, May, June, August, November; fruiting: unknown.
Vernacular names — Not recorded.
Notes — Guatteria fractiflexa is with G. scandens (and sometimes G. beckii , G. flexilis and G. synsepala ) one of the five liana species in the genus. A noteworthy feature is the zigzag pattern of the lateral (plagiotropic) branchlets, most extreme in Amazonian Peru (Amazonas and San Martín ), but less pro- nounced in collections from Peru, Huánuco (Schunke V. 10299) and Ecuador, Zamora-Chinchipe (JØrgensen et al. 2304).
Pirie et al. 130 ( Peru, Amazonas; sterile liana) should be men- tioned here: it resembles collections of G. fractiflexa , but it differs by branchlets, petioles and lower leaf sides all densely covered with erect hairs to c. 1 mm long. We have decided to leave it out as the number of collections of G. fractiflexa is too low to have a good picture of the variability of this curious species.
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