8 NORTH AMERICAN FLORA [Vorume 29 
than the flowering pedicels; pedicels stout, as long as the calyx or shorter; calyx-segments 
villous, oblong, 4-5 mm. long; petals white, obovate, a little longer than the sepals, nearly entire; 
style about 3 mm. long; capsule densely villous, 4-5 mm. thick. 
Tyre Locaity: Summits of the Blue Mountains, Jamaica. 
Distrisution: Known only from the type locality. . 
17. Clethra cubensis A. Rich. in Sagra, Hist. Cuba 11: 75. 1850. 
Clethra byrsonimoides Griseb. Mem. Am. Acad. II. 8: 170. 1860. 
A shrub 1.5-2.5 m. high, the twigs densely brown-villous. Leaves subcoriaceous, 
elliptic to obovate; 10 cm. long or less, 2-5 em. wide, obtuse, apiculate or acute at the apex, 
obtuse or acutish at the base, low-serrate with gland-tipped teeth or subentire, glabrous above, 
pubescent on the veins beneath, finely reticulate-veined on both sides, the stout villous petioles 
2 cm. long or less; racemes several, clustered at the ends of the twigs, densely brown-villous, 
7-10 em. long; pedicels villous, 2~4 mm. long; bracts linear-lanceolate, villous, about as long 
as the pedicels; calyx-segments oblong, obtuse, tomentose, 2.5-3 mm. long; petals obovate, 
obtuse, white, entire or erose, a little longer than the sepals; style very short; capsule de- 
pressed, sunken at the top, 5 mm. broad, finely tomentose. 
TYPE LocaLity: Mt. Mogote, 1380 meters altitude, province of Santiago de Cuba, Cuba. 
DISTRIBUTION: Mountains of Oriente, Cuba. 
18. Clethra Alcoceri Greenm. Proc. Am. Acad. 41: 240. 1905. 
A small tree, with densely brown-tomentulose twigs. Leaves elliptic-lanceolate to oblong- 
obovate, sttbcoriaceous, 14 cm. long or less, 2-6 cm. wide, obtuse, mucronate, or short-acumi- 
nate at the apex, narrowed but obtuse at the base, low-dentate or denticulate with gland- 
tipped teeth, dark-green, minutely stellate-pubescent or becoming glabrate above, paler, 
finely stellate-pubescent and sparingly brown-pubescent on the prominent veins beneath, 
the stout brown-pubescent petioles about 1 cm. long; racemes several, densely tomentose- 
pubescent, 1-2 dm. long; pedicels only 1-3 mm. long; flowers nodding; calyx about 3 mm. 
long, its segments ovate, obtuse, densely tomentulose; petals obovate, obtuse, subfimbriate; 
ovary densely pubescent; filaments glabrous. 
TVPE LOCALITY: Barranca near Trinidad Iron Works, Hidalgo, 
DISTRIBUTION: Known only from the type locality. 
19. Clethra bracteata Griseb. Fl. Brit. W. Ind. 141. 1859. 
A shrub, the twigs and inflorescence densely brown-tomentose or villous. Leaves elliptic 
to oblong-obovate, firm in texture, acute, denticulate, 6-10 cm. long, glabrous above, sparingly 
pubescent beneath, the tomentose petioles 2 cm. long or less; racemes several, about 10 cm. 
long, simple or branched; bracts subulate, about equaling the flowers or shorter; pedicels 
1-3 mm. long; calyx-segments ovate-oblong, 3~3.5 mm. long; petals ciliolate, slightly exceed- 
ing the sepals; style shorter than the petals. 
Type LocaLiry: Summits of the Blue Mountains, Jamaica. 
DistrisuTtion: Blue Mountains, Jamaica. 
20. Clethra Palmeri Britton, sp. nov. 
Young twigs, petioles, and racemes densely brown-tomentose. Leaves elliptic to ovate- 
elliptic or elliptic-obovate, subcoriaceous, 7-12 cm. long, 3.5-6 cm. wide, rounded, obtuse, or 
acutish at the apex, obtuse at the base, entire or some of them sharply serrate, bright-green 
and glabrous or nearly so above, densely pale-tomentose beneath, the lateral veins rather 
widely spreading, 10 or 11 on each side of the midvein, the stout petioles 8-15 mm. long; 
racemes about 5, narrow, densely flowered, 15 cm. long or less; pedicels very short, stout, 
1-2 mm. long; calyx tomentulose, 3.5-4 mm. long, its segments ovate to ovate-oblong, obtuse 
or acutish; petals obovate, erose, about 5 mm. long; style about 3 mm. long. 
Type collected at San Ramon, Durango, April-May, 1906, E. Palmer 137 (herb. N. Y. Bot. 
Gard.). 
