Geonoma maxima subsp. chelidonura (Spruce) Henderson, 2011
Henderson, Andrew, 2011, A revision of Geonoma (Arecaceae), Phytotaxa 17, pp. 1-271 : 99-100
publication ID |
https://doi.org/ 10.11646/phytotaxa.17.1 |
DOI |
https://doi.org/10.5281/zenodo.5609059 |
persistent identifier |
https://treatment.plazi.org/id/FA4887FA-247C-BD24-FF37-DD941BDAA042 |
treatment provided by |
Plazi |
scientific name |
Geonoma maxima subsp. chelidonura (Spruce) Henderson |
status |
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37d. Geonoma maxima subsp. chelidonura (Spruce) Henderson View in CoL , comb. & stat. nov.
Basionym: Geonoma chelidonura Spruce (1871: 111) View in CoL . Geonoma maxima var. chelidonura (Spruce) Henderson (1995: 279) View in CoL . Type: BRAZIL. Amazonas: Rio Uaupés, November 1852, R. Spruce 73 (holotype K!).
Geonoma tuberculata Spruce (1871: 112) View in CoL . Geonoma spruceana subsp. intermedia var. tuberculata Trail (1876: 329) View in CoL . Type: BRAZIL. Amazonas: Rio Negro, no date, R. Spruce 18 (holotype K!).
Geonoma densiflora Spruce (1871: 112) View in CoL . Type: BRAZIL. Amazonas: São Gabriel, near Gama’s sitio, March 1852, R. Spruce 30 (holotype K!).
Geonoma personata Spruce (1871: 112) View in CoL . Type: BRAZIL. Amazonas: Serra of São Gabriel, June 1852, R. Spruce 34 (holotype K!).
Geonoma densiflora var. monticola Spruce (1871: 118) View in CoL . Type: BRAZIL. Amazonas: São Gabriel, June 1852, R. Spruce 33 (holotype K!).
Geonoma spruceana Trail (1876: 328) View in CoL . Type: BRAZIL. Pará: Lago Juruty, 3 April 1874, J. Trail 1002/XXIV (holotype K!, isotype BM!).
Geonoma spruceana subsp. spruceana var. heptasticha Trail (1876: 329) View in CoL . Type: BRAZIL. Amazonas: Rio Negro at Assutuba, 6 July 1874, J. Trail 1007/XCIII (holotype K!, isotype BM!).
Geonoma spruceana subsp. intermedia View in CoL var. m ajor Trail (1876: 330). Type: BRAZIL. Amazonas: Rio Solimões, Coary, 16 October 1874, J. Trail 984/CXLIV (holotype K! isotypes BM!, NY!).
Geonoma juruana Dammer (1907: 119) View in CoL . Type: BRAZIL. Acre: Rio Juruá, Juruá-mirim, August 1901, E. Ule 5744 (holotype B, destroyed, isotypes F!, MG!).
Geonoma longisecta Burret (1930a: 257) View in CoL . Type: PERU. Loreto: Iquitos, 4 May 1925, G. Tessmann 5087 (holotype B, destroyed, isotype, NY!).
Geonoma parvisecta Burret (1930b: 1018) View in CoL . Type: BRAZIL. Amazonas: Rio Negro, São Pedro do Uaupés, 23 September 1928, P. Luetzelburg 22278 (holotype B, destroyed, isotypes M!, NY!).
Leaves undivided or irregularly pinnate (sometimes with 1-veined pinnae present), not plicate; rachis 24.7(7.3–63.0) cm long; pinnae 3(1–10) per side of rachis; basal pinna 4.3(0.2–20.0) cm wide, forming an angle of 44(10–87)° with the rachis. Inflorescences rachillae 15(4–36).
Distribution and habitat:— From 2°03’N– 11°45’S and 55°00’– 75°50’W in the central–western Amazon region of Venezuela, Colombia, Brazil, Peru, and Bolivia at 160(48–525) m elevation in lowland rainforest ( Fig. 25 View FIGURE 25 ).
This is the most variable subspecies with several local morphotypes.
Some specimens (large fruit morphotype) in the western part of the range in Peru and Colombia, especially from around Iquitos in Peru, have larger fruits (mean fruit length 14.0 mm, mean fruit diameter 11.0 mm) than those of other specimens (mean fruit length 11.0 mm, mean fruit diameter 8.2 mm).
Specimens ( parvisecta morphotype) from scattered areas in Colombia, Venezuela, Peru, and Brazil, especially in the upper Rio Negro region, often in black water river areas on sandy soils (campina, catinga), are smaller than others and often have undivided leaves. The types of Geonoma chelidonura and G. parvisecta are of this morphotype.
Most specimens (e.g., Henderson 1517, Trail 989, 991, 998, 1002, 1005, 1007)(intermediate morphotype) from the eastern part of the range in Brazil, occurring in flooded areas near the main Amazon river (várzea), have 1-veined pinnae interspersed between the wider basal and apical pinnae, and in some cases resemble the sympatric subsp. compta .
A few specimens from widely scattered localities (Balick 942, Gruezmacher 45, Kuhlmann 1237, Le Fiell 4, Moore 8428, Pipoly 15638, Prance 7596, Rimachi 10965, 11275, Rudas 3101)( densiflora morphotype) in Peru, Colombia, Venezuela, and Brazil (including an unmapped specimen, Kuhlmann 1237, from “ Tocantins ”, Pará) have thinner textured, sigmoid pinnae, few, thicker rachillae, and persistent pistillate flowers. The types of G. densiflora , G. densiflora var. m onticola, and G. personata have these kinds of leaves and inflorescences. The specimens often occur sympatrically with subsp. chelidonura and subsp. compta and may be of hybrid origin.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Order |
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Family |
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Genus |
Geonoma maxima subsp. chelidonura (Spruce) Henderson
Henderson, Andrew 2011 |
Geonoma longisecta
Burret, M. 1930: 257 |
Geonoma parvisecta Burret (1930b: 1018)
Burret, M. 1930: 1018 |
Geonoma juruana
Dammer, U. 1907: 119 |
Geonoma spruceana
Trail, W. 1876: 328 |
Geonoma spruceana subsp. spruceana var. heptasticha
Trail, W. 1876: 329 |
Geonoma spruceana subsp. intermedia
Trail, W. 1876: 330 |
Geonoma tuberculata
Trail, W. 1876: 329 |
Spruce R. 1871: 112 |
Geonoma densiflora
Spruce R. 1871: 112 |
Geonoma personata
Spruce R. 1871: 112 |
Geonoma densiflora var. monticola
Spruce R. 1871: 118 |