Revision of Otoba (Myristicaceae) Author Jaramillo-Vivanco, Tatiana S. 0000-0003-3310-8002 Jardín Botánico de Quito, Pasaje # 34, Rumipamba E 6 - 264 y Av. Shyris, Interior Parque La Carolina, Quito, 170135, Pichincha, Ecuador. tatiana.jaramillo@gmail.com Author Balslev, Henrik 0000-0002-7101-7120 Henrik Balslev, Ecoinformatics and Biodiversity, Department of Biology, Aarhus University building, 1540, Denmark. henrik.balslev@bios.au.dk text Phytotaxa 2020 2020-05-04 441 2 143 175 http://dx.doi.org/10.11646/phytotaxa.441.2.3 journal article 10.11646/phytotaxa.441.2.3 1179-3163 13872038 Otoba vespertilio Santamaría & Jiménez (2019: 371) . ( Fig. 13 ) Type:— COSTA RICA . Limón : Cantón de Talamanca: Refugio de Vida Silvestre Gandoca-Manzanillo, Caribe sur, [ASACODE] San Miguel, de la estación 1 km al sur, 9°37′00”N , 82°41′00”W , 50–100 m , Apr 1997 , Aguilar et al. 5024 , staminate ( holotype : MO nv). Tree to 25 m tall; branchlets terete, usually ferruginous, pubescent, glabrescent; petiole 0.80–2.00 × 0.06–0.10 mm , not winged; lamina 5.3–12.5 × 2.0–3.5(−4.8) cm, usually ferruginous when dry, glabrescent below; secondary veins 6–8 per side; intramarginal veins absent. Staminate inflorescence with pedicel 2.0– 3.6 mm long; partial inflorescences 1-3, pubescent, ca. 20-flowered; umbelliform parts alternate; 3–5-flowered; bracteoles absent. Staminate flowers with pedicel 3 mm long; perianth 2–3 mm long, inner surface smooth; androecium 1–2 mm long; filament column bottle-shaped, fused; anthers globose to sub-globose, apex obtuse, basally attached to the filaments apex, ca. 0.2–0.3 mm long. Pistillate inflorescence similar to staminate; bracteoles not seen. Pistillate flowers similar to staminate, but with perianth 2–3 mm long; gynoecium ca. 1.8 × 0.7 mm ; ovary glabrous, ovate 1.8 × 0.7 mm , short-stalked; stigma subsessile, bilobed, stigmatic lobes ca. 0.2 mm long. Infructescence with 1–2 fruits. Fruit 2.2–2.7 × 1.6–1.7 cm , subglobose, apex acute to obtuse; pericarp 1.3–1.8 mm thick; aril orange, reddish when dry, waxy; seed 1.8–1.9 × ca. 1.7 cm , apical prickle slightly present. FIGURE 14. Distribution of Otoba parvifolia . Representative specimens examined:— COSTA RICA . Limón : Fila Carbón, ca. 6 km Oeste de Home Creek, 9°40′10”N , 82°50′35”W , 1991, Hammel et al. 18120 ( CR , MEXU , MO , USJ nv). PANAMA . Bocas del Toro : East 1.5 miles off road from divide to Chiriquí Grande, 1984, D’Arcy 16381 ( INPA , MO nv). Distribution:— A narrow endemic on the Caribbean side of Costa Rica and Panamá ( Fig. 15 ), where it has been reported at 0– 800 m . Conservation status:— Not evaluated. Notes:— All morphological characteristics and distribution data taken from Santamaría-Aguilar et al. (2019) . Otoba vespertilio shares its range with O. acuminata . Specimens of O. vespertilio had been included in O. acuminata before O. vespertilio was described as new ( Santamaría-Aguilar et al. 2019 ), but they differ in several morphological characteristics like lamina colour below (whitish, somewhat pubescent, in O. acuminata vs. ferruginous, glabrescent, in O. vespertilio ), indument of the gynoecium (pubescent in O. acuminata vs. glabrous in O. vespertilio ) and the colour of the aril (white-yellow in O. acuminata vs. orange-reddish in O. vespertilio ).