JAN. 4, 1923 STANDLEY: NEW SPECIES OF PLANTS g 
In the key to the species of Amyris by Percy Wilson in the North Ameri- 
can Flora (25: 216. -1911), this plant runs at once to A. texana (Buckl.) 
P. Wils., a species occurring in Texas and northeastern Mexico, but with 
trifoliolate leaves. Amyris conzattii is not closely related to any of the 
species previously known from North America. 
Schaefferia oaxacana Standl., sp. nov. 
Branches greenish, striate-angulate, glabrous; leaves mostly fasciculate, 
oblong-spatulate or oblong-obovate, 1-2 cm. long, 4-8 mm. wide, rounded 
or emarginate at apex, cuneately narrowed at base to a very short petiole, 
glabrous, pinnately nerved, the costa prominent, the lateral nerves ascending 
at a very acute angle, inconspicuous; flowers solitary or fasciculate at the 
nodes, on stout pedicels 1.5—2.5 mm. long; fruit oval, 2-celled, about 8 mm. 
long. 
Type in the U. 8. National Herbarium, no. 1,110,837, collected near the 
Cumbre de las Calaveras, Distrito de Zimatlén, Oaxaca, Mexico, altitude 
2,200 meters, Nov. 27, 1921, by Conzatti (no. 4325). 
The only related species is S. cunezfolia Gray, a native of Coahuila and 
Texas. In that the branchlets are short, stiff, divaricate, and often spinose, 
while in S. oaxacana they are long, slender, ascending, and not spinose, 
differences which give quite different aspects to the two species. In the 
Texan plant, moreover, the fruits are much smaller and sessile. 
Bouvardia oaxacana Standl., sp. nov. 
Branchlets slender, terete, glabrous or minutely puberulent about the 
nodes; stipule sheath 2-3 mm. long, puberulent, the lobes obtuse, cuspidate; 
leaves opposite, the petioles puberulent, equaling or shorter than the stipules, 
the blades ovate or broadly ovate, 4-6 cm. long, 2-4 em. wide, acuminate, 
broadly rounded at base, thin, sparsely puberulent or glabrate, conspicu- 
ously 5-nerved, the lateral nerves arcuate and extending nearly or quite to 
the apex; inflorescence terminal, cymose-corymbose, dense, many-flowered, 
the pedicels 2-4 mm. long, hirtellous; hypanthium hirtellous; calyx lobes 
linear-lanceolate, 5-9 mm. long, puberulent; corolla red, glabrous outside, 
the tube about 17 mm. long, the lobes oblong, 5 mm. long, obtuse, glabrous; 
anthers about equaling the corolla lobes; style not exserted. 
Type in the U. 8S. National Herbarium, no. 1,110,842, collected between 
Santa Cruz and El] Aguacate, Distrito de Juquila, Oaxaca, Mexico, altitude 
500 meters, Dec. 24, 1921, by C. Conzatti (no. 4513). 
Related to B. quinquenervata Standl., of Chiapas, which is distinguished 
by its small corolla and shorter, narrower calyx lobes. In one of the speci- 
mens of B. oaxacana the corolla is sparsely puberulent, but this probably 
represents an unimportant variation from the typical form with glabrous 
corolla. 
Chomelia barbata Standl., sp. nov. 
Plants unarmed, the branchlets slender, appressed-pilose;. stipules 3 mm. 
long, deltoid, cuspidate, appressed-pilose outside; petioles slender, 5-8 mm. 
long, puberulent; leaf blades elliptic or rounded-elliptic, 3.5-5.5 em. long, 
2-3.5 em. wide, obtuse or acutish, rounded to acute at base, glabrous above 
except along the costa, beneath densely barbate along the costa, elsewhere 
