Acalypha nusbaumeri I.Montero & Cardiel, 1169
|
publication ID |
https://doi.org/ 10.5252/adansonia2023v45a26 |
|
persistent identifier |
https://treatment.plazi.org/id/C00D879E-FFEA-536D-20A9-FACE8864FC91 |
|
treatment provided by |
Plazi |
|
scientific name |
Acalypha nusbaumeri I.Montero & Cardiel |
| status |
|
37. Acalypha nusbaumeri I.Montero & Cardiel View in CoL
PhytoKeys 140: 69 ( Montero Muñoz et al. 2020b). — Type: Mada - gascar. Reg. Sava [Prov. Antsiranana], sous-préfecture de Vohemar, commune rurale de Daraina, forêt de Bekaraoka, partie nord, 13°06’S, 49°42’E, 177 m, 13.II.2004, L. Nusbaumer & P. Ranirison LN1169 (holo-, G[G00028080]; iso-, K, MO, P[P01152829, P05547228]). ICONOGRAPHY. — Montero Muñoz et al. (2020b); Figs 57H View FIG ; 69A. ETYMOLOGY View FIG . — The epithet honors Louis Nusbaumer, researcher and curator at the Conservatoire et Jardin botaniques de la Ville de Genève, Switzerland. Nusbaumer works on the systematics, phylogeny, biogeography, and conservation of Malagasy plants and is also the collector, with Patrick Ranirison, of the type specimen of this species.
DISTRIBUTION AND HABITAT. — Endemic to Madagascar (Sava). Mainly in dry deciduous forest. On basement rocks. Altitudinal range 200-351 m ( Fig. 58 View FIG ).
PRELIMINARY CONSERVATION ASSESSMENT. — Acalypha nusbaumeri is only known from one collection from Loky-Manambato site (see assessment of A. menavody ). Its EOO could not be calculated; its AOO is estimated to be 8 km 2. Acalypha nusbaumeri is assigned a preliminary conservation status of Critically Endangered: CR B2ab(ii,iii).
MATERIAL EXAMINED. — 1 collection. Madagascar: Nusbaumer, L. LN 1169 (G[G00028080], K, MO, P[P05547228, P 01152829]) .
DESCRIPTION
Shrubs, probably deciduous, to 0.8 m tall, divaricately branched, monoecious. Branches blackish, pubescent with simple, curved, antrorse trichomes, glabrous when mature. Axillary buds spherical, to 1 mm diameter, perulate, perules 2, imbricate, membranous, brownish, external perule dentate, sparsely hairy. Stipules to 2 mm long, triangular-lanceolate, midrib prominent, sparsely hairy with simple, short, erect trichomes. Petioles slender, 2-3.5(-4.5) cm long, indumentum similar to that on young branches. Leaf blades 5-8.5 × 2.5-5 cm, ovate-lanceolate to elliptic-lanceolate, thin-membranous; base obtuse to rounded; apex subacuminate, acumen to 0.5 mm long, rounded, mucronate; margin crenate-serrate, teeth rounded; upper and lower surfaces subglabrous, with some simple, short, curved, antrorse trichomes on veins; axils of secondary veins with sparsely hairy, pocket-shaped domatia; venation actinodromous, basal veins 3 or 5, secondary veins 3-4 per side. Stipels absent. Inflorescences spiciform, androgynous, axillary, to 1.7 cm long, mostly male with 1 female bract at base; peduncle thick, to 5 mm long, indumentum similar to that on young branches. Female segment: bract 1, sessile, enlarging in fruit to 2 × 2.5 mm, orbicular-reniform, translucent, subglabrous, with simple, short trichomes on teeth and veins; margin crenate, central tooth not prominent; bracteoles to 0.5 mm long, linear-lanceolate, sparsely hairy with simple, short trichomes, margin with some sessile glands. Male segment persistent, to 0.7 cm long; bracts to 0.5 mm long, triangular, ciliate. Male flowers: pedicel to 0.5 mm long, sparsely hairy; buds c. to 0.8 mm diameter, glabrous, papillose. Female flowers 1 per bract, sessile; sepals 3, to 1 mm long, lanceolate, ciliate with simple, short trichomes; ovary to 1 mm diameter, 3-lobed, densely papillose, papillae minute, surface hispid; styles 3, to 3.5 mm long, distinct, sparsely hairy, each divided into 8-10 slender segments. Allomorphic flowers not seen. Capsules (immature) to 2 mm diameter, echinate, projections to 1 mm long, surface sparsely hairy with simple, short erect trichomes c. 0.5 mm long. Seeds too young to describe.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.