84 NORTH AMERICAN FLORA [VotumE 29 
ruptly pointed, or acute, entire or denticulate, abruptly narrowed, truncate, or subcordate at 
the base, glabrous or canescent or tomentose beneath, sometimes only along the midrib, at 
maturity, rather long-petioled; panicles 3-8 cm. long, the rachis and pedicels densely fine- 
pubescent, tomentose, canescent, or tomentulose, with or without some glandular hairs; calyx 
4-6 mm. wide, the lobes suborbicular to orbicular-ovate, obtuse; corolla 7-8 mm. long, or rarely 
larger; stamens 3.5-4 mm. long, the filaments villous; ovary pubescent; berries globose or 
depressed, 8-12 mm. long, red. 
TYPE Locality: Near Xalapa, Vera Cruz. 
DistRIBUTION: Western Texas, Mexico, and Guatemala. 
ILLUSTRATIONS: H. B. K. Nov. Gen. & Sp. 3: pl. 260 (Arbutus densiflora); Novi Comm. Acad. 
Bonon. 4: pl. 42 (Arbutus rubescens); Sarg. Silva pl. 232; Sarg. Man. f. 587; Britton, N. Am. Trees 
f. 694 (Arbutus texana). 
4, Arbutus prunifolia Klotzsch, Linnaea 24: 73. 1851. 
A shrub or small tree, the branchlets becoming glabrous or nearly so; leaves bright-green, 
the blades oblong, oblong-ovate, or ovate, 3-8 cm. long, obtuse or acute, pubescent when 
young, becoming glabrous and reticulate-veiny above, often permanently pubescent beneath, 
serrate or crenate-serrulate, abruptly narrowed or rounded at the base, rather long-petioled; 
panicles few- or many-flowered, 3-7 cm. long, the rachis and pedicels finely pubescent; calyx 
5.5~6.5 mm. wide, the lobes ovate, obtuse or acutish; corolla 6-7 mm. long; stamens 3~3.5 
tom. long, the filaments villous; berries subglobose, 9-12 mm. long, red; berries globular, 
10-13 mm. in diameter, red, granular-papillose. 
“TypH Locarity: Near Real del Monte, Hidalgo. 
DistRrBuTiIon: Central Mexico. 
5. Arbutus spinulosa Mart. & Gal. Bull. Acad. Brux. 9!: 532. 
1842, 
A shrub; branchlets puberulent or finely pubescent; leaves bright-green, the blades oblong- 
lanceolate or oblong, varying to oblong-ovate, or obovate, 4-7 cm. long, or rarely larger, 
acutish, acute, or abruptly short-acuminate, slightly reticulate and ultimately glabrous above, 
more or less tomentulose beneath, serrate, with the teeth sometimes spine-tipped, abruptly 
narrowed or rounded at the base, relatively short-petioled, sometimes very short-petioled; 
panicles mostly 2-5 cm. long, often clustered, the rachis and pedicels finely pubescent; calyx 
4-5 mm. wide, the lobes triangular, acute or acuminate; corolla 6-7 mm. long; stamens 2.5-3 
mm. long, the filaments villous; berries not seen. 
TYPE LOCALITY: Michoacan. 
DISTRIBUTION: Western Mexico. 
6. Arbutus mollis H. B. K. Nov. Gen. & Sp. 3: 280. 1819. 
A tree, the branchlets finely soft-pubescent; leaves deep-green, the blades oblong, often 
narrowly so, varying to broadest above or below the middle, 4-11 cm. long, or sometimes 
individually smaller, acute or obtuse, serrulate or shallowly serrate, finely and thinly pubescent 
above, reddish or brownish, canescent-tomentose beneath, attenuate or rounded at the base, 
rather long-petioled; panicles densely flowered, 3-6 cm. long, clustered, the rachis and pedicels 
tomentulose; calyx 6-7 mm. wide, the lobes ovate, obtuse or acutish; corolla 8-9 mm. long; 
stamens 3.5—4 mm. long, the filaments villous; berries not seen. 
Tyee LocaLity: Near Guanajuato, Guanajuato. 
DISTRIBUTION: Central Mexico. 
ILLUSTRATION: Bot. Mag. pl. 4595. 
7, Arbutus laurina Mart. & Gal. Bull. Acad. Brux. 9!: 535. 1842. 
A tree, the branchlets glabrous or puberulent, red; leaves deep-green, the blades ovate- 
oblong to oblong, 2-9 cm. long, obtuse or acutish, serrate with cartilaginous-tipped teeth, 
glabrous and somewhat shining above, pubescent, especially along the midrib, beneath, 
abruptly narrowed or rounded at the base, rather long-petioled ; panicles 4-8 cm. long, clustered, 
