Prestoea carderi
Prestoea (pres-toh-EH-ah) carderi (kahr-DEH-ree) | |||||||
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![]() Mt Warning Caldera, Nth NSW, Australia. Photo by Pete. | |||||||
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Contents
Habitat and Distribution
Colombia, Ecuador, Peru, and Venezuela. Cordillera Central and Oriental inDescription
Stems cespitose with 1 or 2 well-developed stems, or occasionally appearing solitary and then with basal shoots, 0.5-4 m tall, 3-4 (-10) cm in diam., brown, occasionally procumbent. Leaves 3-6 ( -10), spreading. regularly pinnate or occasionally simple; sheath open and not forming a crownshaft, somewhat persistent, 30-60 cm long including a ligule to 5 cm long, reddish, fibrous distally at margins; petiole (0.3-) 0.9-2.5 m long, ± terete, densely covered with appressed, peltate-lacerate scales, glabrescent, or glabrous; rachis 1-2.4 m (22-48 cm in simple leaves) long, with scales like those of petiole; pinnae (on pinnate leaves) 13-36 (-54) on each side, regularly arranged and horizontally spreading in the same plane, subopposite or alternate, linear-lanceolate, aristate, with prominent midvein and lateral veins, midvein lacking scales abaxially, with punctations abaxially, basal pinna 32-60 x (0.2-) 1-1.5 cm; middle pinnae 35-70 (-90) x 2-4.5 (-6) cm; apical pinna 17-35 x 1-4 cm; simple leaves obovate, 38-87 cm long, 20-28 cm wide, bifid apically, with 16-20 main veins per side. Inflorescences racemose, interfoliar, erect in bud and at anthesis, arching in fruit; peduncle (0.4)-0.8-1 .4 m long, 4-10 (-20) mm in diam., terete; prophyll 18- 55 cm long, 1.5-5 cm wide; peduncular bract (0.6-) 1-2.2 m long including a 5-6 cm long umbo, persistent; rachis 18-66 cm long, densely to moderately covered with reddish brown, branched hairs; rachilae (7-) 21-59 (-l01), 8.5-27 cm long proximally, 4-10 cm long distally, about 1 mm in diam. at anthesis, 1.5-1.7 mm in diam. In fruit, slightly zig-zag, angular and almost rectangular in cross section, tending to be distichously arranged, especially distally, densely to moderately covered with clusters of reddish brown, branched hairs (occasionally glabrous); flowers in triads on proximal about ½, rachillae, paired or solitary staminate distally, the triads tending to distichously arranged on the rachillae; triad bracteole low, rounded to prominent, deltate, to 1 mm long; first flower bracteole obscure, second and third bracteoles ± equal, rounded, 0.5 mm long; staminate flowers 3.5-5.5 mm long; sepals triangular, 1-1.5 mm long, keeled; petals ovate, 2.5- 5 mm long; stamens arranged on a short receptacle; filaments 1.5 mm long, linear, flattened; anthers 1-2 mm long; pistillode 0.5- 1 mm long, trifid at apex; pistillate flowers 2-3.5 mm long; sepals widely ovate, 1.5-2 mm long, fleshy; petals triangular, 1-3.5 mm long; staminodes digitate. Fruits globose, 0.7-1 cm in diam., the stigmatic remains lateral; epicarp purpleblack, minutely tuberculate; seeds globose; endosperm ruminate; eophyll bifid. (Gloria Galeano & A. Henderson, Flora Neotropica Monograph 72)/Palmweb.
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This species, perhaps more than any other, illustrates local variation in Prestoea and associated taxonomic problems. Local forms are usually well-separated geographically, but it is not clear if this apparent disjunction is real or an artefact of incomplete sampling and/or deforestation in intervening areas. In Venezuela (Yaracuy) there are populations with robust, racemose, markedly tomentose inflorescences with prominent rachilla bracteoles. In the Colombian Andes there are populations with simple leaves and others with pinnate leaves, but both types have a more delicate inflorescence than the form from Yaracuy. Similar pinnate-leaved plants occur in Ecuador, but here there is some variation in inflorescences. Balslev & Henderson 60648 has racemose inflorescences and almost corymobse inflorescences on the same plant. In Peru (Amawnas) a few specimens from the Serranía de Bagua have very small, simple leaves and small inflorescences with rather few rachillae. Chamaedorea pinnatifrons from the same locality is also dwarf in size. Finally, in the southern part of the range of the species, in Peru, are populations with the robust, markedly tomentose inflorescences, similar to the ones that occur in Yaracuy. We have chosen to recognize all these local variants as belonging to the same species, even though several of them have already been described as distinct species; many more collections are needed to resolve infraspecific variation. (Gloria Galeano & A. Henderson, Flora Neotropica Monograph 72)/Palmweb. |
Culture
Cold Hardiness Zone: 10b
Comments and Curiosities
A smallish, clustering palm with slender stems to 4 m (13 ft.) tall, each holding a small crown of flat, pinnate or rarely simple and entire leaves. The flower stalks stand erect among the leaves. It is found from the eastern Andes in central Peru north to the Cordillera de la Costa in Venezuela, where it grows in montane rainforests between 1000 and 2000 m (3300 and 6600 ft.). Although it would make a lovely ornamental for humid warm temperate and tropical areas, it has hardly been introduced into cultivation. (RPS.com)
- IMAGE GALLERY
External Links
References
Phonetic spelling of Latin names by edric.
Special thanks to Geoff Stein, (Palmbob) for his hundreds of photos.
Special thanks to Palmweb.org, Dr. John Dransfield, Dr. Bill Baker & team, for their volumes of information and photos.
Glossary of Palm Terms; Based on the glossary in Dransfield, J., N.W. Uhl, C.B. Asmussen-Lange, W.J. Baker, M.M. Harley & C.E. Lewis. 2008. Genera Palmarum - Evolution and Classification of the Palms. Royal Botanic Gardens, Kew. All images copyright of the artists and photographers (see images for credits).
Gloria Galeano & A. Henderson, Flora Neotropica Monograph 72
Many Special Thanks to Ed Vaile for his long hours of tireless editing and numerous contributions.