Difference between revisions of "Dypsis"
in C. F. P. von Martius et al., Historia Naturalis Palmarum 3: 180. 1838.
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|accepted_name=Dypsis | |accepted_name=Dypsis | ||
| − | |accepted_authority=Noroña ex Martius | + | |accepted_authority=Noroña ex Martius |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
| − | |title=in C. F. P. von Martius et al.,Historia Naturalis Palmarum | + | |title=in C. F. P. von Martius et al., Historia Naturalis Palmarum |
|place=3: 180. 1838 | |place=3: 180. 1838 | ||
|year=1838 | |year=1838 | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Dypsis | name=Dypsis | ||
| − | + | |authority=Noroña ex Martius | |
| − | |authority=Noroña ex Martius | ||
|rank=genus | |rank=genus | ||
|parent rank=subtribe | |parent rank=subtribe | ||
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|distribution=Native to Africa (Madagascar and adjacent islands). | |distribution=Native to Africa (Madagascar and adjacent islands). | ||
|reference=None | |reference=None | ||
| − | |publication title=in C. F. P. von Martius et al.,Historia Naturalis Palmarum | + | |publication title=in C. F. P. von Martius et al., Historia Naturalis Palmarum |
|publication year=1838 | |publication year=1838 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V22/V22_11.xml |
|subfamily=Arecaceae subfam. Arecoideae | |subfamily=Arecaceae subfam. Arecoideae | ||
|tribe=Arecaceae tribe Areceae | |tribe=Arecaceae tribe Areceae | ||
Latest revision as of 21:29, 5 November 2020
Trunks erect, clustered, less than 15 cm diam., clustering, erect, with conspicuous nodal rings, unarmed, occasionally branching near base. Leaves: leaf bases unarmed, yellowish, forming distinct crownshaft; blade pinnate [undivided], unarmed; plication reduplicate; segments lanceolate, evenly spaced, strongly ascending; apices acuminate. Inflorescences axillary below crown of leaves, paniculate, with 3 orders of branching; prophyll small; peduncular bracts caducous, tubular. Flowers unisexual, sessile, in triads of 1 pistillate flower flanked by 2 staminate flowers. Staminate flowers: sepals 3, imbricate, free; petals 3, briefly connate basally, valvate; stamens 6, free; anthers dorsifixed; pistillode present. Pistillate flowers: sepals 3, imbricate, free; petals 3, imbricate, free; staminodes 6, minute; pistil 1; ovules 1; stigmas 3. Fruits drupes, ellipsoid; exocarp yellow, smooth; mesocarp fleshy; endocarp thin, fibrous, terete in cross section. Seeds ovoid; endosperm homogeneous; embryo subbasal; eophyll 2-cleft; segments lanceolate.
Distribution
Native to Africa (Madagascar and adjacent islands).
Discussion
Dypsis is a morphologically diverse genus restricted to Madagascar and adjacent islands. The genus has recently been revised and substantially expanded by J. Dransfield and H. J. Beentje (1995b). The most familiar species, D. lutescens (H. Wendland) Beentje & J. Dransfield, is hardly representative of the astonishing diversity in growth form, leaf shape, floral details, and fruit morphology found in the genus.
Species 140 (1 in the flora).
Selected References
None.