Desmoncus mitis subsp. ecirratus Henderson, Phytotaxa 35: 33 (2011)

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Distribution

Map uses TDWG level 3 distributions (https://github.com/tdwg/wgsrpd)
Bolivia present (Henderson, A. 2011: A revision of Desmoncus (Arecaceae). – Phytotaxa 35: 1-88)A
Brazil North present (Henderson, A. 2011: A revision of Desmoncus (Arecaceae). – Phytotaxa 35: 1-88)A
Brazil West-Central present (Henderson, A. 2011: A revision of Desmoncus (Arecaceae). – Phytotaxa 35: 1-88)A
Peru present (Henderson, A. 2011: A revision of Desmoncus (Arecaceae). – Phytotaxa 35: 1-88)A
From 3°30'-10°58'S and 56°00'-73°14'W in the south-central Amazon region of Peru (Ucayali), Brazil (Acre, Amazonas, Mato Grosso, Rondônia) and Bolivia (Beni, Pando) with an outlier in Peru (Loreto) at 177(120-300) m elevation in lowland rainforest (Henderson, A. 2011: A revision of Desmoncus (Arecaceae). – Phytotaxa 35: 1-88)A

Discussion

  • Name excluded by Henderson (Henderson, A. 2011: A revision of Desmoncus (Arecaceae). – Phytotaxa 35: 1-88)A
  • Taxonomic notes:-This taxon was mistakenly referred to by Henderson (1995) as Desmoncus mitis var. leptoclonos, based on D. leptoclonos Dammer. However, this name is pre-occupied by D. leptoclonos Drude.
    Subspecific variation:-The outlying specimen (Asplund 14687) from Loreto, Peru, has much wider pinnae than other specimens. Some specimens are described on labels as being non-climbers. On some specimens (e.g., Moreno 163, Schunke 15033, Nee 34990, Forero 6384) there are some leaves with weakly developed cirri as well as leaves with the more usual poorly-developed cirri; on a few other specimens there are weakly developed cirri. Specimens from the eastern part of the range, from eastern Acre, Rondônia, Mato Grosso, and adjacent Bolivia usually have 2 pinnae per side of the shorter rachis, and these have very few spinules at the bases. Specimens from the western part of the range, from western Acre and adjacent Peru tend to have 3 pinnae per side of the longer rachis, and usually have spinulose pinnae bases. These specimens overlap with those of D. mitis subsp. leptospadix. (Henderson, A. 2011: A revision of Desmoncus (Arecaceae). – Phytotaxa 35: 1-88)A

Description

  • Leaf sheaths non-spiny, rarely sparsely spiny; rachises 20.9(8.0-41.0) cm long; pinnae ovate, 3(2-5) per side of rachis; cirri usually absent, the rachis terminating beyond the distalmost pair of pinnae in a short 'stub'. (Henderson, A. 2011: A revision of Desmoncus (Arecaceae). – Phytotaxa 35: 1-88)A

Bibliography

    A. Henderson, A. 2011: A revision of Desmoncus (Arecaceae). – Phytotaxa 35: 1-88