A New Species of Jacquinia (Theophrastaceae) from Veracruz, Mexico

Abstract

Jacquinia morenoana, a new species of Theophrastaceae from the northern coast of the state of Veracruz, Mexico, is described. A discussion of its affinities with J. macrocarpa Cavanilles subsp. macrocarpa, based on the habitat and morphological characters, is presented. RESUMEN. Se describe como especie nueva a Jacquinia morenoana (Theophrastaceae) de la costa norte del estado de Veracruz, Mexico. Se discuten sus afinidades con J. macrocarpa subsp. macrocarpa, se indica el hAbitat y se discuten las caracterfsticas morfol6gicas que las distinguen. While reviewing material of Theophrastaceae from Veracruz, Mexico, in several herbaria (CHAPA, ENCB, MEXU, NY, US, and XAL), a specimen with glandular hairs on the flowers was detected; this character had not been previously reported for the genus Jacquinia. The material is described and illustrated below as a new species. Jacquinia morenoana Castillo-C. & Medina, sp. nov. TYPE: Mexico. Veracruz: Barra de Cazones, on the pasture near the beach, Municipio of Cazones, elevation 10 m, 20 June 1986, S. Vargas 91 (holotype, XAL). Figure 1. Frutex perennis, 3 m altus. Ramorum terminalium nodi bracteae cumulatis, primordia meristematica ramorum recentium tegentibus, 1--4 mm longis, triangularibus, pubescentibus. Folia maximam partem ad nodos cumulata, lanceolata usque ad oblanceolata, 2.0-7.5 cm longa, 0.62.2 cm lata ad medium, apice acuta, subinde suborbicularia, in spinam rigidam terminantia. Inflorescentia terminalis, racemosa, 6-9 flora, pedicello 0.7-1.6 cm longo, ad basim bracteole triangularem vel squamiformem ferenti. Flores hermaphroditi, bilobulati, campanulati, aurantiaco-rubri, carnosi, 7 mm longi, pubescentes, pilos glandulosos ferentes, glandulis nigris. Fructus globosus usque ad leviter conicus, saepe truncatus, apice acuto, rigido, valido, cicatricem circularem ad pistilli basem ferens, ad apicem niger, 2.3-3.7 cm longus, 1.5-2.3 cm latus, viridis, aurantiacus, nitens, in sicco corrugatus. Perennial shrub, 3 m tall; terminal branches pubescent with simple hairs, with dark brown longitudinal lines that give a corrugated aspect, bracteolate, the bracts 2.5 mm long, lanceolate, pubescent, ciliate. Leaf-buds perulate, bracts 1-4 mm long and 0.7-1.0 mm broad at base, lanceolate, ciliate, triangular, with two transverse lines, pubescent. Leaves 2.0-7.5 cm long, 0.6-2.2 cm broad in the middle, spaced and clustered along the branches, rigid, coriaceous, lanceolate to obovate-lanceolate, apex acute, occasionally ending with an obtuse, rigid spine, 2.0-3.5 mm long, brownish green, base decurrent and thick, margin revolute and thick; abaxial surface glabrous, punctate, lineolate when dry, giving a corrugated aspect, costa prominent; upper surface mainly glabrous, gray when dry, shiny, evidently penninerved, punctate, costa pubescent at base; petiole 1-2 mm long. Inflorescences terminal racemes, 6-9-flowered; peduncle 2.5-5.0 cm long, corrugated, pilose, lignified, with bracts at the base; pedicel 0.7-1.6 cm long, broadened toward the apex, corrugated, with a triangular bracteole near the base, pilose, ciliate, apically acute with a black line on the base. Flowers hermaphroditic, orange-red, 7 mm long; calyx cupular, corrugated, glabrous, sepals 5, 3.0 x 3.3 mm, suborbicular, imbricate, the margin thin, membranous, glabrous, entire; corolla campanulate, 5-lobed, the tube 5 mm long, lobes 4 x 4 mm, corrugated, with glandular hairs internally, outer surface covered with hairs tipped with a dark to black gland, inner corolla appendices 5, 1.5-2.0 x 2.5 mm, alternate to corolla lobes, on top of corolla tube; stamens 5, foliaceous, adnate to the middle of corolla tube, filament 5 x 0.8 mm, anthers extrorse, dithecal, 2.5 x 1.5 mm; style 2 mm long, stigma capitate, with 5 terminal divisions, ovary 1.5 mm broad. Fruit 2.3-2.7 cm long, 1.5-2.3 cm broad, globose to slightly conical, frequently flattened, apex acute, rigid, hard, with a circular callus at the base of the remains of the style, green, yellow, or orange, tip black, shiny, corrugated; seeds 8 mm long, 6.5 mm broad, immersed in a brown mucilaginous endocarp, flat, shiny, corrugated, brown. Habitat. Jacquinia morenoana is found in remnants of semi-evergreen seasonal forest. It is abundant locally, at elevations of 10-290 m; associated species include Acacia cornigera (L.) Willdenow, NovoN 8: 129-132. 1998. This content downloaded from 157.55.39.94 on Sat, 19 Nov 2016 04:22:58 UTC All use subject to http://about.jstor.org/terms