Bursera palmeri S. Wats.

Elaphrium palmeri (S. Wats.) Rose
Bursera Palmeri S. Wats. Proc. Am. Acad. 22: 402. 1887. Tercbinlhus Palmeri Rose, Contr. U. S. Nat. Herb. 10 : 121. 1906.
A shrub or small tree, with smooth reddish bark ; young branches densely pubescent ; leaves pinnate ; rachis broadly winged, toothed ; leaflets 7-11, lanceolate, acute or acuminate, 2.5-5 cm. long, densely pubescent on both surfaces, but especially so beneath; peduncles short or none; pedicels 4-8 mm. long; drupes ovoid, acute, glabrous, Smm. long.
Type locality' : In a deep canyon, Rio Blanco, near Guadalajara, Jalisco. Distribution : Durango to Guatemala.

Elaphrium queretarense Rose, sp. nov
A tree, 4-5 m. high; second-year branches brownish or reddish, glabrous; young branches pubescent ; leaves on vigorous shoots alternate, but on short branches clustered near the tips, pinnate ; rachis broadly winged ; leaflets 7-9, lanceolate, 1-3 cm. long, acute, serrate, lighter-colored beneath than above, very pubescent on both surfaces; flowers not seen ; fruiting clusters short and compact, densely tomentose ; persisting calyx-lobes very pubescent ; drupes large, 8-9 mm. long, apiculate, shining.
Type collected near Queretaro, Mexico, August, 1906,/. N. Rose & Joseph H. Painter 11153 (U. S. Nat. Herb. no. 453938).