Canarium subtilis Daly, Raharim. &amp; Federman 2015, sp. nov.
Creators: name: Daly, Douglas C.
name: Raharimampionona, Jeannie
name: Federman, Sarah
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Sapindales
Burseraceae
Canarium
Canarium subtilis

description: <i>Canarium subtilis</i> Daly, Raharim. &amp; Federman, sp. nov. (Figs 1; 30) <i>Small to medium-sized tree, leaves</i> c. <i>2-jugate, stipules</i> c. <i>3 mm long, leaflets glabrous, the apex gradually and broadly acuminate and the base symmetric, secondary veins in 6-10 pairs, the spacing decreasing toward apex and base; distinguished from</i> C. pallidum <i>Daly, Raharim. &amp; Federman</i> <i>, sp. nov. by the petiole 1.8-2 (vs 2.5-3.5) mm long, stipules subulate (vs ovate in</i> C. pallidum, <i>sp. nov.), leaflets drying dark brown above (vs whitish-green), terminal leaflet smaller than the laterals, on leaflet adaxial surface the secondary and higher-order veins impressed (vs narrowly prominent), and inflorescence axes with sparse ascending golden hairs to 0.35 mm long and not lenticellate (vs subglabrous and with elongate lenticels).</i> TYPUS. <i>—</i> <b>Madagascar</b>. Toamasina, Maroantsetra, Ambinanitelo, Marovovonana, Ambodivato, 420 m, 15°18’13”S, 49°33’13”E, 21.XI.2002, <i>P. Antilahimena, G.E. Schatz &amp; Niovoson 1450</i> (holo-, NY!; iso-, MO, P[P05280197]!, TAN). PARATYPI. <i>—</i> Toamasina, Analanjirofo, Maroantsetra, Antsirabesahatany, Anjiahely, Vohitaly Forest, 600 m, 15°26’22”S, 49°32’03”E, 29.XII.2002, <i>P. Antilahimena 1650</i> (NY). DISTRIBUTION AND ECOLOGY. — <i>Canarium subtilis</i>, sp. nov. appears to be restricted to a small area near Maroantsetra. It is a modestsized tree known to date from disturbed moist forest at 420-600 m elevation. Fruiting Nov.-Dec. ETYMOLOGY. — The specific epithet refers to the understated morphology of this taxon. DESCRIPTION Trees, reproductive size 14-20 m <i>×</i> 14-40 cm diam. Leaves 16- 28 cm long, 2-jugate; petiole 1.8-2 cm long, petiole and rachis glabrous or with scattered thick appressed hairs to 0.05 mm long, also scattered elongate raised lenticels; stipules 6-10 mm from petiole insertion, <i>c.</i> 3 mm long, subulate, fleshy, surfaces with scattered fine appressed pale golden hairs to 0.1 mm long, scar 1.5 mm long; all lateral petiolules 6-8 mm long, terminal one 18-22 mm long, petiolules canaliculate, lateral pulvinuli conspicuous; basal leaflets 2.5-4.5 <i>×</i> 1.5-2.2 cm, elliptic to ovate, other laterals 4-9 <i>×</i> 1.7-3.2 cm, elliptic, terminal one 4.5-8.1 <i>×</i> 1.9-3.5 cm, oblanceolate to elliptic; leaflet apex gradually (sometimes abruptly) and broadly short-acuminate, the acumen 2-5 mm long; leaflet base symmetrical, cuneate to acute; margin flat, leaflets chartaceous, drying dark brown, glossy (at least abaxially); secondary vein framework festooned-brochidodromous, secondaries in 6-10 pairs, discolorous, nearly straight, spacing decreasing toward apex and base, angle nearly perpendicular and increasing slightly toward apex, perpendicular epimedial tertiaries (and a few intersecondaries) present; intercostal tertiaries irregularreticulate, quaternaries regular-polygonal; on abaxial side all veins narrowly prominent, surface glabrous or with scattered capitate glands; on adaxial side the midvein narrowly prominulous but sunk in a groove, rest of veins impressed, surface glabrous. Flowers unknown. Infructescences 6-9 cm long, with few fruits, axes with sparse ascending golden hairs to 0.35 mm long; fruiting pedicel 4-5 <i>×</i> 2-3 mm, cylindrical or slightly clavate; fruiting calyx 5-6 mm long, not cupular, the lobes 2-3 mm long. Fruits 2-2.8 <i>×</i> 1.9-2.4 cm, broadly ovoid to subglobose, apex obtuse or rounded, sometimes the tip apiculate, the base truncate, the surface glabrous or with scattered capitate glands, maturing fruits with scattered light-colored pustules. NOTES <i>Canarium subtilis</i>, sp. nov. is distinguished from <i>C. manongarivum</i>, sp. nov. in the discussion under the latter species and from <i>C. pallidum</i>, sp. nov. in the discussion under that species.
description: Published as part of <i>Daly, Douglas C., Raharimampionona, Jeannie &amp; Federman, Sarah, 2015, A revision of Canarium L. (Burseraceae) in Madagascar, pp. 277-345 in Adansonia 37 (2)</i> on page 342, DOI: 10.5252/a2015n2a2, http://zenodo.org/record/5208903