Dypsis linearis Jum., Ann. Inst. Bot.-Géol. Colon. Marseille , III, 6(1): 35 (1918)

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Content

Distribution

Map uses TDWG level 3 distributions (https://github.com/tdwg/wgsrpd)
Madagascar present (World Checklist of Arecaceae)B
Only known from the Anove River near Soanierana-Ivongo. (Dransfield, J. & Govaerts, R. 2006: Nomenclatural note - correcting errors in Palms of Madagascar)A

Discussion

  • The need for the new name, Dypsis anovensis, is a consequence of the inclusion of Neophloga in Dypsis. Dypsis anovensis is known only from its type. The combination of slender, linear leaflets and small sparsely branched inflorescence is paralleled by D. cookei from high elevation forest on Marojejy; however, the leaflet texture of the latter is different and there are consistently more leaflets on each side of the rachis, that dry dark rather than pale green. Some of the dimensions mentioned by Jumelle suggest that he had more mature inflorescences at hand than the one preserved on the type sheet in P. (Dransfield, J. & Govaerts, R. 2006: Nomenclatural note - correcting errors in Palms of Madagascar)A

Biology And Ecology

  • Rain forest at low elevation. (Dransfield, J. & Govaerts, R. 2006: Nomenclatural note - correcting errors in Palms of Madagascar)A

Conservation

  • Presumed extinct. Not seen for more than eighty years. Most of the forest has disappeared from the Anove River mouth. (Dransfield, J. & Govaerts, R. 2006: Nomenclatural note - correcting errors in Palms of Madagascar)A

Uses

  • Not recorded. (Dransfield, J. & Govaerts, R. 2006: Nomenclatural note - correcting errors in Palms of Madagascar)A

Description

  • Slender forest undergrowth palm to 2 m tall. STEM c. 7 mm diam. (not exceeding 3 cm, fide Jumelle). LEAVES c. 6 in crown (7-8, fide Jumelle); sheaths 6.5 cm long, c. 7 mm diam., covered in caducous chocolate-coloured scales; petiole 8-15 cm long, c. 2.5 mm wide near base, covered in a thick layer of caducous pale brown scales; rachis 9-10 cm; leaflets 3-4 on each side of the rachis, ± regularly arranged, drying pale green, up to 2.5 cm distant, the longest to 25 cm long, c. 4-12 mm wide, mostly composed of a single fold, both surfaces with scattered punctiform scales, abaxially with broad bands of caducous brown scales. INFLORESCENCE interfoliar, in bud much shorter than the leaves, but one dead inflorescence axis suggesting eventually as long as leaves (to 45 cm fide Jumelle), branching to 1 order only; peduncle 21 cm; prophyll to 8 x 0.4 cm, membranous; peduncular bract exceeding prophyll by 9.5 cm, otherwise similar (exceeding prophyll by 23 cm fide Jumelle); rachis c. 5 cm (8-12 cm, fide Jumelle) with rather dense brown scales; rachillae probably c. 14, c. 2 cm long, c. 0.5 mm diam., rather sparsely scaly, triads c. 0.5 mm apart in immature inflorescence, rachilla bract entire, inconspicuous. STAMINATE FLOWERS in very young bud, all parts at an early state of development; stamens 3 antepetalous. (Dransfield, J. & Govaerts, R. 2006: Nomenclatural note - correcting errors in Palms of Madagascar)A

Materials Examined

  • Soanierana-Ivongo: near to River Anove, Sept. 1912 (buds), Perrier 12066 (holotype P). (Dransfield, J. & Govaerts, R. 2006: Nomenclatural note - correcting errors in Palms of Madagascar)A

Bibliography

    A. Dransfield, J. & Govaerts, R. 2006: Nomenclatural note - correcting errors in Palms of Madagascar
    B. World Checklist of Arecaceae