Dypsis henrici J.Dransf., Beentje & Govaerts, Palms (1999+) 50: 184 (2006)

Primary tabs

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Madagascarpresent (World Checklist of Arecaceae)B
SE Madagascar. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Discussion

  • Very close to D. commersoniana and possibly not distinct. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Biology And Ecology

  • Forest; 60-300 m. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Conservation

  • Unknown. Not seen for over sixty years. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Uses

  • Not recorded. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Description

  • Palm 2-3 m, very slender. LEAVES 4 or more in the crown; sheath c. 6.6 cm, with oblique opening, with minute auricles to 2 mm high,red-brown, with scattered scales; petiole 5-6 cm long, c. 2 mm diam., with scattered scales; rachis 17-18 cm long, c. 2 mm diam., with scattered scales; leaflets 2-5 on each side of the rachis, in 2 sub-opposite groups distant for 2.8-5 cm, proximal 8-9 x 0.7-1 cm, median 10-13 x 0.9-1.2 cm, the top pair forming a flabellum 12.5-14 x 9 cm, connate for 4.5-5.5 cm, the lobes 8-9 x 2.5-2.6 cm, proximal leaflets with 1 main vein, acuminate, distal leaflets with 6 main veins, the apices truncate and dentate, also the distal outer margins dentate, all leaflets glabrous or with a few scattered scales proximally. INFLORESCENCE c. 34 cm, branched to 2 orders; peduncle c. 19 cm long, distally 1.5-2 mm diam., with scattered scales; prophyll 13-16 x cm, with scattered scales, open for the distal 5 cm or near the apex only; peduncular bract deciduous, inserted at 9 cm from the base of the peduncle; rachis c. 10 cm, with scattered scales, with c. 2 branched and 10 unbranched first order branches, the proximal with 2 rachillae each; rachillae 5.5-8 cm long, 1 mm diam., minutely puberulous but glabrescent, with distant superficial triads. STAMINATE FLOWERS with sepals 0.5-0.6 x 0.7-1 mm; petals 1.8-2.1 x 1.2-1.3 mm, striate; stamens 6, slightly biseriate (offset 0.25 mm), filaments 1- mm long, the base slightly triangular, the distal part thin, anthers 1-1.3 x 0.4-0.5 mm, dorsifixed, versatile, the locules parallel and acute; pistillode 0.8-0.9 x 0.3-0.4 mm. PISTILLATE FLOWERS unknown. FRUIT unknown. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Materials Examined

  • Tolanaro: Manantantely forest, Sept. 1928 (fl.), Humbert 5817 (Holotype P). (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Bibliography

A. J. Dransfield & H. Beentje, The Palms of Madagascar. 1995
B. World Checklist of Arecaceae