1
<taxonx xmlns:
dc=
"http://digir.net/schema/conceptual/darwin/core/2.0" xmlns:
mods=
"http://www.loc.gov/mods/v3" xmlns:
xsi=
"http://www.w3.org/2001/XMLSchema-instance">
4 <mods:titleInfo><mods:title>The Palms of Madagascar
</mods:title></mods:titleInfo>
6 <mods:namePart type=
"family">Dransfield
</mods:namePart>
7 <mods:namePart type=
"given">J.
</mods:namePart>
8 <mods:namePart type=
"family">Beentje
</mods:namePart>
9 <mods:namePart type=
"given">H.
</mods:namePart>
12 <mods:dateIssued>1995</mods:dateIssued>
13 <mods:publisher>Royal Botanic Gardens, Kew and The International Palm Society
</mods:publisher>
18 <treatment rank=
"species">
20 <name>Dypsis mcdonaldiana
</name>
21 <author>Beentje
</author>
22 <citation>in J.Dransfield
& H.Beentje, Palms of Madagascar:
245 (
1995)
</citation>
23 <type>Madagascar, Andohahela; Beentje and Andriampaniry;
4591</type>
24 <type_loc>Holotype K; isotypi MO, P, TAN
</type_loc>
26 <div type=
"introduction"><p>Named after the company that funded HB for four years of the project on Madagascar palms: McDonald's Restaurants (UK). This is in the tradition of Linnaeus, the father of Botany, who named taxa after his benefactors (and nasty weeds after his enemies, so we have to add that this is a beautiful palm!).
</p></div>
27 <div type=
"etymology"><p></p></div>
28 <div type=
"vernacular"><p>Not recorded.
</p></div>
29 <div type=
"diagnosis"><p>D. scottianae versosimiliter affinis sed inflorescentia robustiore rachillis longioribus distincta.
</p></div>
30 <div type=
"description"><p>Clustering or subcolonial palm in groups of
8-
20. STEMS
3-
5 m,
1-
3 cm diam.; internodes
1-
5 cm, brown, more distally green. LEAVES
7-
10, spiral, flushed reddish when young; sheath
12-
20 cm, pale green with distal red-brown pubescence, with tiny rounded ligules, the outer sheaths half open; petiole
5-
10 cm long,
4-
9 x
2-
4 mm diam., abaxially with scattered scales, adaxially flat with sharp edges; rachis
37-
90 cm, abaxially with scattered scales, in mid-leaf keeled,
3-
5 mm diam.; leaflets
12-
21 on each side of the rachis, regular or slightly irregular (in mid-leaf
2-
4 cm apart), with top flabellum, the proximal
14-
28 x
0.3-
1.5 cm, median
21-
43 x
1.6-
2.4 cm, distal
0.8-
29 x
0.8-
2.9 (-
7) cm, the distal pair joined for up to
7.5 cm and at the apex dentate over a width of
3-
15 mm, main veins
1-
3 (to
6 in the distal ones), apices attenuate, unequally bifid, no ramenta or scales. INFLORESCENCE (interand) infra-foliar,
45-
90 cm, branched to
2 orders; peduncle
18-
33 cm, proximally
5-
8 x
2-
3 mm, distally
4-
7 x
2-
6 mm diam., with sparse red-brown scales; prophyll
16-
27 x
0.9-
1 cm, borne at
4-
8 cm above the base of the peduncle, with scattered scales, split in the distal
1-
4 cm only; peduncular bract deciduous, not seen; rachis
16-
27 cm, glabrous or nearly so, with
4-
6 (-
16) branched and
11-
13 unbranched first order branches, the proximal of these to
8 cm long with up to
8 rachillae; rachillae
4-
20 cm,
1-
1.5 mm diam., puberulous to glabrous. STAMINATE FLOWERS unknown. PISTILLATE FLOWERS with sepals
0.8-
1 x
1-
1.2 cm; petals
1.6-
2.5 x
1.5-
1.8 cm; staminodes not seen; ovary subglobose, c.
1.5 mm high, c.
1.3 mm diam., with a trifid stigma. FRUIT red,
6-
9 x
3-
4 mm; remnant sepals
1 x
1 mm, petals
2.2-
2.4 x
1.8 mm, with lower part imbricate and minutely ciliate, upper part valvate and triangular; endocarp fibrous, fibres not anastomosing. SEED with homogenous endosperm. EOPHYLL bifid.
</p></div>
31 <div type=
"distribution"><p>Only known from the mountains of SE Madagascar.
</p></div>
32 <div type=
"biology_ecology"><p>Lowland or submontane rain forest edge; slight midslope or wet valley bottom among boulders;
300-
1100 m.
</p></div>
33 <div type=
"conservation"><p>Vulnerable. Restricted to a small area, which is only partially protected.
</p></div>
34 <div type=
"uses"><p>Not recorded.
</p></div>
35 <div type=
"discussion"><p>Probably closest to D. scottiana, but with more robust inflorescences with longer rachillae. The (Guillaumet) specimen from the highest ele-
36 vation has much shorter and scaly rachillae while the lowland ones have longer glabrous ones.
37 Close to this species is Bosser
18599 from Vondrozo: W of Vondrozo, alt.
700 m, Dec.
1963 (bud); the sheath is longer (
29 cm), the petiole shorter (
5 mm), the rachis is
28 cm with only
6 leaflets on each side; the peduncle is
68 cm, but the rest of the inflorescence is similar.
</p></div>
38 <div type=
"materials_examined"><p>Tolanaro: E slopes of N part of Anosy chain, Nov.
1971 (old infl.), Guillaumet
3980 (P); Andohahela, col Tanatana, Dec.
1989 (y.fr.), Dransfield et al. JD6782 (K, TAN);
13km N of Ezoambo, March
1992 (fr.), Beentje
& Andriampaniry
4591 (K, MO, P, TAN, type).
</p></div>