Taxon Details: Lyonia stahlii Urb.
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Narratives:
Family:
Ericaceae (Magnoliophyta)
Ericaceae (Magnoliophyta)
Scientific Name:
Lyonia stahlii Urb.
Lyonia stahlii Urb.
Primary Citation:
Symb. Antill. (Urban) 5: 453. 1908
Symb. Antill. (Urban) 5: 453. 1908
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description: Evergreen shrub to moderate-sized tree to 6(-10) m tall, with brownish to gray, longitudinally furrowed bark; twigs slightly to moderately angled, slender, sparsely to moderately lepidote, otherwise subglabrous to slightly (moderately) pubescent; buds ovoid, 0.8-2.5 x 0.8-2 mm. Leaf blades elliptic to ovate, obovate, or nearly orbicular, 1.7-6.5(-9) x 0.7-4(-5.2) cm, ± flat to slightly abaxially curved, coriaceous, ca. 0.2-0.36 mm thick; base narrowly cuneate to rounded (very slightly cordate); apex acuminate, to acute, rounded, or truncate; margin plane to slightly revolute, the apical portion strongly to obscurely and irregularly toothed to entire, the basal portion entire to irregularly and obscurely toothed; venation brochidodromous, 3° veins ± reticulate; adaxial surface lepidote but scales usually quickly deciduous, sparsely to moderately pubescent on midvein, especially basal portion, the 3° and higher order veins visible to obscure, the 2° veins prominent to obscure, sometimes depressed; abaxial surface moderately lepidote, otherwise glabrous (sparsely pubescent on midvein only, near petiole), the 3° and higher order veins obscure to very slightly raised, not forming dense, fine, raised network, the 2° obscure to slightly raised and visible; scales rust colored, persistent to deciduous, ca. 0.1-0.34 mm in diameter, erose to entire; petiole 2-10 mm long, lepidote, otherwise pubescent adaxially or all around; flower buds ± intermixed with vegetative buds. Inflorescences fasciculate, 4- to 16-flowered; pedicels clearly articulated with calyx, slender, 4-11 mm long, lepidote, otherwise glabrous to densely pubescent; bracts ± opposite, basal or nearly so, narrowly triangular, 0.9-2 mm long; floral bracts to ca. 2 mm long. Flowers 4- or 5-merous; calyx lobes triangular, with acuminate apices, 0.7-1.5(-2) x 0.6-1.3 mm, adaxial side glabrous or sparsely pubescent, especially near apex, abaxial side lepidote, otherwise glabrous to sparsely pubescent; corolla cylindrical, white (pink tinged toward mouth), 4-8.5 x (2-)2.5-4 mm, abaxially sparsely lepidote; filaments roughened, 3-5 mm long, unappendaged; anthers 0.7-1.5 mm long; ovary lepidote, otherwise pubescent, placentae ± subapical. Capsules ellipsoid to ovoid, (3-)3.5-6 x 1.7-3.5(-4) mm, slightly lepidote, otherwise sparsely pubescent, especially near base, the pale, very thick sutures separating as unit from adjacent valves; seeds 1.5-3 mm long.
Distribution: Hispaniola and Puerto Rico, in open forests of Pinus occidentalis, thickets, and cloud forests of various mountain ranges, at ca. (500-)1100-2100(-2300) m elev.
Key to the Varieties of Lyonia stahlii:1. Leaves entire to obscurely (occasionally clearly) toothed, secondary
veins obscure to slightly depressed; flowers mainly 5-merous,
corolla 4-6 mm long; Puerto Rico ................. var. stahlii
. Leaves irregularly toothed or notched, secondary veins often
depressed; flowers 5- and/or 4-merous, corolla (5.5-)6-8.5 mm
long; Hispaniola ............... var. costata
Description: Evergreen shrub to moderate-sized tree to 6(-10) m tall, with brownish to gray, longitudinally furrowed bark; twigs slightly to moderately angled, slender, sparsely to moderately lepidote, otherwise subglabrous to slightly (moderately) pubescent; buds ovoid, 0.8-2.5 x 0.8-2 mm. Leaf blades elliptic to ovate, obovate, or nearly orbicular, 1.7-6.5(-9) x 0.7-4(-5.2) cm, ± flat to slightly abaxially curved, coriaceous, ca. 0.2-0.36 mm thick; base narrowly cuneate to rounded (very slightly cordate); apex acuminate, to acute, rounded, or truncate; margin plane to slightly revolute, the apical portion strongly to obscurely and irregularly toothed to entire, the basal portion entire to irregularly and obscurely toothed; venation brochidodromous, 3° veins ± reticulate; adaxial surface lepidote but scales usually quickly deciduous, sparsely to moderately pubescent on midvein, especially basal portion, the 3° and higher order veins visible to obscure, the 2° veins prominent to obscure, sometimes depressed; abaxial surface moderately lepidote, otherwise glabrous (sparsely pubescent on midvein only, near petiole), the 3° and higher order veins obscure to very slightly raised, not forming dense, fine, raised network, the 2° obscure to slightly raised and visible; scales rust colored, persistent to deciduous, ca. 0.1-0.34 mm in diameter, erose to entire; petiole 2-10 mm long, lepidote, otherwise pubescent adaxially or all around; flower buds ± intermixed with vegetative buds. Inflorescences fasciculate, 4- to 16-flowered; pedicels clearly articulated with calyx, slender, 4-11 mm long, lepidote, otherwise glabrous to densely pubescent; bracts ± opposite, basal or nearly so, narrowly triangular, 0.9-2 mm long; floral bracts to ca. 2 mm long. Flowers 4- or 5-merous; calyx lobes triangular, with acuminate apices, 0.7-1.5(-2) x 0.6-1.3 mm, adaxial side glabrous or sparsely pubescent, especially near apex, abaxial side lepidote, otherwise glabrous to sparsely pubescent; corolla cylindrical, white (pink tinged toward mouth), 4-8.5 x (2-)2.5-4 mm, abaxially sparsely lepidote; filaments roughened, 3-5 mm long, unappendaged; anthers 0.7-1.5 mm long; ovary lepidote, otherwise pubescent, placentae ± subapical. Capsules ellipsoid to ovoid, (3-)3.5-6 x 1.7-3.5(-4) mm, slightly lepidote, otherwise sparsely pubescent, especially near base, the pale, very thick sutures separating as unit from adjacent valves; seeds 1.5-3 mm long.
Distribution: Hispaniola and Puerto Rico, in open forests of Pinus occidentalis, thickets, and cloud forests of various mountain ranges, at ca. (500-)1100-2100(-2300) m elev.
Key to the Varieties of Lyonia stahlii:
Flora and Monograph Treatment(s):
Lyonia stahlii Urb.: [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.
Lyonia stahlii Urb.: [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.