Erythroxylum truxillense Rusby, Druggists Circular & Chemi- 
al Gazette 44: 220. t. 14. 1900. 45: 49. 1901. 
LECTOTYPE: “Truxillo coca, small coca. Native of Peru and cultivated.” The 
commercial drug presented by E. Merck & Co., New York City. Acces- 
sion No. 2684, Economic Museum of the New York Botanical Garden, 
no date. Specimen of dried leaves in a glass jar. (lectotype, ECON; iso- 
lectotypes consisting of small samples of this collection deposited at F, 
NY, USM). 
Erythroxylum Hardinii E. Machado, Anales Ci. (Lima) 7(1-2): 
14. 1969. 
Type: PERU: Dept. San Martin, “Quebrada cerca de Crisnejas y el pueblo de 
Uchiza. Aparentamente en el lugar y sitios alendafios se cultivo hace 
mucho tiempo.” 15 Feb 1965, E. Machado 1256 (holotype, US 2803917: 
photograph of holotype, F, neg. 55486; isotypes, MOL, NCSC), 
Shrub to 3 m. tall, usually with multiple trunks reaching 4 cm. 
in diameter. Bark greyish brown with transverse and longitudi- 
nal cracks. Branches relatively dense, erect and spreading, 
straight or bending with age, light reddish to greyish brown, 
becoming longitudinally fissured. Branchlets straight, slender, 
not markedly zigzag in extension growth, nodes scarcely knobby, 
usually as thick as the internodes, stems mostly smooth but 
sometimes minutely scaly-ramentaceous, light green becoming 
reddish or greyish brown, lenticels punctate or rarely lenticular, 
usually not breaking the surface. Internodes alternatively ex- 
tended 6-20 mm. long, or shortened during ramenta production, 
I-3 mm. long. Ramenta often present but short, occurring 
mainly at the base of new shoots or on slow-growing short 
Shoots, inconspicuous. Stipules scarcely diverging from axis, 
membranaceous, pale green, turning light brown with age and 
disintegrating, keels in young stipules entire or rarely minutely 
fimbriate towards apex. Leaves usually persisting on the 
branches, weakly distichous, blade plane, narrowly elliptic to 
oblong-lanceolate, sometimes elliptic, apically acute to obtuse or 
rounded, basally acute to attenuate, 20-65 mm. long, 10-25 mm. 
wide, membranaceous, medium to light green above, pale green 
to glaucous green beneath, midrib flat adaxially or with only a 
slight medial ridge, pale green, often drying whitish beneath, 
57 
