GOLDMAN—PLANT RECORDS OF LOWER CALIFORNIA. 839 
Brandegee, who described and named this species,’ outlined its range as extending 
northward on the western coast to some distance above Todos Santos and on the 
eastern as far as La Paz. In the same paper he states that the name “‘palo amarillo” 
is due to the color of the wood and that the tree is often used for poles in the con- 
struction of houses. He found the flowers of a sickish-sweet odor, appearing in August, 
the fruit falling in December. 
Xanthoxylon pterota H. B. K. 
This thorny shrub was rather common in places along the southern slope of the 
Victoria Mountains. It grows 4.5 to 5.5 meters high. A specimen with ripe fruit 
was taken at about 750 meters, between San Bernardo and El Satz, January 21. 
BURSERACEAE. Torchwood Family. 
Elaphrium macdougalii Rose. 
The copal trees of the genus Elaphrium are widely dispersed in tropical America 
and are found nearly throughout Lower California, except in the extreme northern 
part, the San Pedro Martir Mountains, and the northwest coast region, Collectively 
the species form a very important part of the flora of the Peninsula. The present 
species ranges in the Lower Sonoran desert strip between the Gulf of California and 
the eastern base of the San Pedro Martir Mountains and has been reported from the 
coast of Sonora. Growing-asa tree 6 to 7.5 meters in height, it is especially abundant 
on the plain along the eastern basal slopes of the Borrego and Consag mountains, 
near San Felipe Bay, where specimens were taken June 26. Elaphrium microphyllum 
occurs in much smaller numbers in the same locality. 
Elaphrium rhoifolium (Benth.) Rose. 
Although this species is not known to reach so far north as E. microphyllum, it is 
probably as widely dispersed in the Peninsula, since north of San Ignacio it spreads 
over much of the Pacific slope from which E. microphyllum is absent. It is one of 
the characteristic species of the Cape District and ranges thence northward to the 
southern slopes of the San Pedro Mértir Mountains. On the Pacific slope it was first 
seen on a rocky hill near San Fernando, where specimens with young fruit and flowers 
were taken September 4. At Calamahué young leaves, flowers, and fruit were appear- 
ing September 15. Specimens with fully developed fruit were taken at El Potrero, 
October 14, and between La Purisima and Comandt, November 5. It is also an 
abundant species on Magdalena Island. 
Elaphrium cerasifolium (T. 8. Brandeg.) Rose, CHERRY-LEAVED COPAL. 
This Elaphrium is known only from the Cape District south of La Paz, where it 
was not abundant. A small tree 6 or 7.5 meters in height was noticed on the slope 
of the deep wash at El Cajon, from which a specimen in fruit was taken December 28. 
The type came from San José del Cabo. 
Elaphrium epinnatum Rose.’ 
This species, recently described from our material, was found only at Cape San 
Lucas, where the type was collected December 30, 1905. It grows as a tree about 
7.5 meters in height. 
Elaphrium filicifolium (T. 8. Brandeg.) Rose. 
Brandegee records this species as common throughout the Cape District south of 
La Paz. It is the only species of the genus known to occur in the Peninsula which 
we did not collect. 
1 Zoe 1: 378. 1891, 2See p. 311. 
