204 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
for it is unusual to find in herbaria more than two or three speciniens 
of any species. 
Hoffmannia rotundata Standl., sp. nov. 
_ Branchlets stout, subterete, glabrate, the internodes elongate; leaves opposite, 
the petioles stout, 1.5 to 3 cm. long, sparsely villosulous or glabrate, the blades 
broadly oval-elliptic, 10.5 to 16 cm. long, 6 to 7.5 em. wide, acutish or short- 
acuminate at the base, very obtuse to acute at the apex and short-acuminate, 
membranaceous, dark green above, glabrous, paler beneath, ferruginous-vil- 
losulous, especially along the veins, the costa very stout, prominent, the lateral 
veins slender, strongly arcuate, about 12 on each side; cymes dense, sessile, with 
numerous flowers, these sessile or short-pedicellate ; calyx sparsely ferruginous- 
villous or glabrate, 2 to 2.5 mm, long, the tube turbinate, angulate, the lobes 
deltoid, acute, shorter than the tube; corolla 6 to 8 mm, long, glabrous or with a 
few scattered hairs, the lobes lance-oblong, ucutish, twice as long as the tube. 
Type in the herbarium of the Missouri Botanical Garden, no, 765057, collected 
on Cerro del Boquer6én, Chiapas, Mexico, June, 1914, by C. A. Purpus (no. 7268, 
in part). 
Of the previously described species, H. tuerckheimii Donn. Smith, of Guate- 
mala, is most closely related to the present plant. That species, however, has a 
long-villous corolla, fewer flowers, and subcoriaceous leaves, 
Purpus’s no, 7268 is evidently a mixture. Specimens of this collection in 
other herbaria are referred to Hoffmannia chiapensis, described below. 
Hoffmannia uniflora Standl., sp. nov. 
sranches fruticose, slender, brownish, the branchlets very slender, subterete, 
bifariously rufous-puberulent, the internodes short; stipules deltoid, acutish, 
about 1 mm, long, deciduous; leaves opposite, the petioles slender, 3 to 6 mm. 
long, sparsely puberulent, the blades narrowly oblong-elliptic or lance-elliptic, 
4 to 8 cm. long, 1 to 2 em. wide, attentuate to the base, acuminate or long- 
acuminate at the apex, membranaceous, deep green above, glabrous, paler be 
neath, sparsely puberulent along the veins or glabrate, the lateral veins very 
slender, about 6 on each side, arcuate-divaricate or ascending; flowers mostly 
solitary, sometimes in 2-flowered cymes, the pedicels slender, 3 to 6 mm. long, 
glabrate; calyx lobes linear, acute, in fruit 2 to 3 mm, long; fruit oval, 6 to 7 
min. long, 5 to 6 mm. wide, costate, glabrous; seeds minute, brownish, coarsely 
reticulate, 
Type in the U. 8, National Herbarium, no. 941382, collected near Cobain, Alta 
Verapaz, Guatemala, altitude 1,100 meters, February, 1908, by H. von Tiirck- 
heim (no. IT. 2107). 
Related to H. mericana (Link, Klotzsch & Otto) Hemsl., but in that the calyx 
lobes are minute and broadly deltoid. 
Hoffmannia panamensis Standl., sp. nov. 
Shrub or small tree, 2 to 4 meters high, glabrous throughout, the branches 
slender, subterete, the internodes elongate: leaves opposite, the petioles slen- 
der, 1 to 8.5 cm, long, the blades oblong, elliptic-oblong, or lanee-oblong, 7 to 
15.5 em, long, 2.5 to 5.5 em. wide, acute or very obtuse at the base, long- 
acuminate or cuspidate-acuminate at the apex, membranaceous, bright green 
above, pale yellowish green beneath, the lateral veins prominent, about 11 on 
ach side; cymes sessile, few or many-flowered, dense, the flowers 4-parted, 
short-pedicellate or subsessile; calyx 2.5 mm. long, the lobes triangular or lance- 
triangular, acute, minute at anthesis, sometimes elongate in fruit: corolla 
yellow, 7 to 8 mm. long, the lobes lance-oblong, acutish, twice as long as the 
tube or longer; ovary 2-celled, 
