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Family:

Ericaceae (Magnoliophyta)

Primary Citation:

J. Arnold Arbor. 62: 346. 1981

Accepted Name:

This name is currently accepted.

Type Specimens:

Specimen 1: Holotype -- A. H. Liogier

Description:

Description: Evergreen shrub or small tree to ca. 3 m tall, with grayish, longitudinally furrowed bark; twigs moderately angled, slender, sparsely lepidote, otherwise glabrous to sparsely pubescent; buds ovoid, 1-2 x 0.8-1.5 mm. Leaf blades elliptic to slightly obovate, or nearly orbicular, 2.3-6(-8) x 1-3(-5) cm, ± flat to slightly recurved, quite coriaceous, ca. 0.33-0.43 mm thick; base narrowly cuneate to rounded; apex acute to rounded or truncate; margin plane to slightly revolute, apical portion ± obscurely and irregularly toothed (to clearly and irregularly toothed), basal portion entire or nearly so; venation brochidodromous, 3° veins ± reticulate; adaxial surface lepidote but scales usually quickly deciduous, sparsely pubescent on basal portion of midvein, 3° veins obscure to slightly visible (2° veins depressed); abaxial surface moderately lepidote, otherwise glabrous, the 3° and higher order veins obscure to very slightly raised but not forming dense, fine, raised network, the 2° veins usually at least slightly raised and clearly visible; scales rust colored but becoming whitish with age, persistent to deciduous, ca. 0.07-0.14 mm in diameter, entire to erose; petiole 2-9 mm long, lepidote, otherwise adaxially pubescent; flower buds ± intermixed with vegetative buds. Inflorescences fasciculate, ca. 4- to 12-flowered; pedicels clearly articulated with calyx, slender, 6-15 mm long, lepidote, otherwise sparsely pubescent; bracteoles ± opposite, basal, narrowly triangular, 0.8-1.5 mm long; floral bracts to ca. 1.3 mm long. Flowers (4-)5-(-6)-merous; calyx lobes triangular, with acuminate apices, 1-2 x 1-2 mm, adaxial surface sparsely pubescent, especially near apex, abaxial surface lepidote, otherwise glabrous to sparsely pubescent; corolla urceolate, uniformly pink (white and pink-tinged), 3.5-4.5 x 3.5-5 mm, abaxially sparsely lepidote; filaments roughened, 2-3 mm long, essentially unappendaged; anthers 1-1.3 mm long; ovary lepidote, otherwise pubescent, placentae ± subapical. Capsules ± globose or very short-ovoid, 3-4.5 x 4-5 mm, slightly lepidote, otherwise moderately to densely pubescent, the pale, very thick sutures separating as unit from adjacent valves; seeds 1.3-2 mm long.

Distribution: Endemic to the Dominican Republic, and known only from Loma la Sabrosa (in thickets in Pinus occidentalis forest) and Loma de la Sal and Loma La Golondrina (in moist cloud forest) in the Cordillera Central, at ca. 1300-1500 m elev.

Type: Dominican Republic. Loma La Sabrosa, S of Rancho del Medio Mata Grande, San José de las Matas, 1500 m, 5-9 Nov 1968, Liogier 13476 (holotype, NY; isotype, US).

Illustration: Judd (1995), fig. 11.

Flora and Monograph Treatment(s):

Lyonia alainii Judd: [Article] Luteyn, James L., et al. 1995. Ericaceae, Part II. The Superior-Ovaried Genera (Monotropoideae, Pyroloideae, Rhododendroideae, and Vaccinioideae P.P.). Fl. Neotrop. Monogr. 66: 560.