Anthurium victorii Nadruz & Cath.

CATE Araceae, 17 Dec 2011. araceae.e-monocot.org

Distribution

Presently known as endemic and rare in the Alto da Serra biological station, with a single locality of occurrence. A greater volume of collections is necessary for a real delimitation of A. victorii.

General Description

Herbaceous terrestrial. STEM erect; internodes 0.5-0.95 cm long; cataphylls castaneous, lightly decomposed at apex, castaneous and slightly decomposed towards the base of the stem, 3.6-4.2 cm long; prophylls castaneous, lightly decomposed at apex, castaneous and slightly decomposed towards the base of the stem, 2-2.3 cm long; sheaths 1.2-1.5 cm long. LEAVES with petiole greenish, cylindrical being lightly flattened at the apical extremity, 17.7-28 X 0.15-0.3 cm; geniculum vinaceous on young leaf, concolorous to lightly clearer and thicker than petiole, flattened adaxially with subacute margins, 1.6-2 cm long; blades lightly chartaceous, deflexed, greenish lightly discolorous, sagittate, apex rostrate, shortly apiculate, base cordate, sinus parabolic, 13.7-19.85 x 5.85-11 cm at the point of junction of the petiole with the base of the foliar blade; midrib acute on both surfaces; basal veins 2, the most external ending in the lowermost part of the blade, the innermost ending at the margin in the basal 1/4-1/3 of the blade, lobes rounded and directed outwards; primary lateral veins weakly impressed adaxially, weakly prominent abaxially, 5 on both sides; collecting veins starting from the base of blade, 0.45-0.7 cm away from the margin. INFLORESCENCE with peduncle cylindrical, greenish, lightly vinaceous to greenish, 21.05-24.1 x 0.2 cm; spathe membranaceous, perpendicular, subdeflexed, rolled down, lanceolate, greenish with a vinaceous base, persistent, forming an obtuse to almost right angle with the peduncle, 2.9 x 0.55 cm; spadix rose, greenish-rose to greenish-stramineous after anthesis, funneled, stipitate, 3.2-4.5 x 0.3-0.35 cm, stipe vinaceous to greenish, 0.3-0.8 cm long; flowers in primaly spiral 4-5, in secondary spiral 3, tepa Is vinaceous, yellowish-vinaceous to stramineous at start of fructification (with castaneous stamens), cucullate, lightly rugose, externally acute, internally convex, 0.11 x 0.1-0.15 cm, androecium with stamens opposite the anterior and posterior tepals with thickened filaments, convex ventrally and concave dorsally, stamens opposite to the lateral tepals with thin filaments of parallel margins, 0.15 x 0.08-0.1 cm; gynoecium with ovary oblong, sessile, with a prominent vinaceous stigma, with punctuations concentrated at apex, bilocular, 1 ovule per locule, enveloped by a sticky hyaline mucilage, placentation apical, 0.15 x 0.11 cm; berries immature, greenish-vinaceous to vinaceous.

Habitat

Terrestrial species, growing in hillside Atlantic Forest above 850 m, in shady and humid places.

Reproduction

Up to the moment flowers known in March, periodical collections being recommended to confirm a longer period of flowering and fruiting.