SEPT. 19, 1923 STANDLEY: NEW TREES FROM SALVADOR 398 
Satvapor: Tonacatepeque, Calderén 214; Standley 19467. San Salvador, 
Standley 19118, 23544; Calder6n 420. Armenia, Standley 23451. Ahuachapan, 
Standley 19901. La Libertad, Standley 23225. Between San Martin and 
Laguna de Ilopango, Standley 22528. La Union, Standley 20650. Dept. de 
Ahuachapdin, Padilla 186. Without locality, Renson 265. San Vicente, 
Standley 21665. Santa Ana, Standley 20427. 
Honpuras: Amapala, Standley 20697. 
NicaraGcua: Aserradores Island, Baker 625. 
Karwinskia calderoni is the only species of which I have seen Central 
American specimens. It is related to K. humboldtiana of Mexico, but is 
evidently distinct in the acuminate leaves and the frequently if not usually 
bifureate peduncles. In Salvador it is known as “‘giiiligitiste”’ or “huilihuiste,”’ 
and at Ampala the name “‘pimientillo” was given for it. The tree is extremely 
abundant in the drier portions of the Pacific slope of Central America, occur- 
ring usually on dry hillsides at low or middle elevations. It is found also on 
the Atlantic slope of Guatemala. The wood is employed for various purposes, 
particularly for cart axles, railroad ties, mallets, shuttles, and fuel. Pigs 
are said to be paralized by eating the fruit, and similar properties are generally 
ascribed to the Mexican species. 
Clethra vicentina Standl., sp. nov. 
Tree, about 9m. high, with dense rounded crown; young branchlets fulvous- 
tomentose or glabrate; petioles 7 to 15 mm. long; leaf blades oblanceolate- 
oblong, 8 to 12 em. long, 2.5 to 3.5 em. wide, obtuse, attenuate to the base, 
subcoriaceous, entire, green and glabrous above, covered beneath, except upon 
the nerves, with a very fine, close whitish tomentum; racemes numerous, 12 to 
15 em. long, the rachis slender, closely fulvous-tomentose, the pedicels slender, 
3 to 5 mm. long; calyx lobes ovate-oval, 3.5 to 4 mm. long, obtuse, tomen- 
tulose; petals white, 5 to 6 mm. long, erose and ciliate; style 1.5 mm. long. 
Type in the U. S. National Herbarium, no. 1,137,375, collected in moist 
forest on the Voledn de San Vicente, Salvador, altitude 1,500 meters, March 
8, 1922, by Paul C. Standley (no. 21603). 
Related, apparently, to C. hondurensis Britton, in which the leaves are 
broader and dentate, and the calyx lobes acute. 
Clethra vulcanicola Standl., sp. nov. 
Tree, 4.5 to 6 m. high, the young branchlets bearing a few appressed hairs 
but soon glabrate; petioles 7 to 12 mm. long; leaf blades oblanceolate-oblong 
or obovate-oblong, 9 to 12 em. long, 2.5 to 4.5 em. wide, acute or acuminate, 
acute or obtuse at base, coarsely serrate, glabrous above, green beneath and 
glabrous except for a few stiff, usually appressed hairs along the costa and 
lateral nerves; racemes 10 to 13 cm. long, the rachis fulvous-tomentose, the 
pedicels slender, 5 to 6 mm. long; calyx lobes 3 mm. long, ovate, obtuse, 
fulvous-tomentulose; capsule 6 to 7 mm. in diameter, tomentose. 
Type in the U. 8. National Herbarium, no. 1,138,667, collected on the rim 
of the crater of the Voledin de San Salvador, altitude about 1,800 meters, 
April 7, 1922, by Paul C. Standley (no. 22954). 
Similar in general appearance to (. alcoceri Greenm., of Hidalgo, but in 
that species the pedicels are very short and the leaves are white-tomentulose 
beneath. Clethra suaveolens Turcz. is more closely related, but in that the 
leaves are entire. The vernacular name of C. vulcanicola is “zapotillo.” 
