332 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
other localities. Specimens in flower were taken east of Ensenada, May 31, and at 
La Huerta, June 2, and with green fruit along the road from Rancho Santo Tomés 
to San Antonio, July 28. 
MIMOSACEAE. Mimosa Family. 
Acacia filicioides (Cav.) Trel. TIMBE. 
Specimens in flower and immature fruit were taken at Tinaja de Santana (alti- 
tude 1,020 meters), 35 miles north of San Ignacio, October 4. The species was found 
growing as a shrub 1.8 to 2.5 meters high, on stony hill slopes. Brandegee records it 
from San José del Cabo and Todos Santos. 
Acacia flexicaulis Benth. MEXICAN EBONY. 
First noted and a specimen in fruit collected between Agua Colorada and Cerro 
Colorado, northwest of La Paz, December 15. From this vicinity southward to 
Cape San Lucas it was one of the characteristic species at the lower elevations, grow- 
ing as a thorny shrub 1.8 to 2.5 meters high, with short, broad, thickened pods. 
Acacia greggii A. Gray. CAT’S-CLAW. 
This Lower Sonoran species was common on the desert near the east base of the 
San Pedro Mirtir Mountains; on the western side of the Peninsula it was first seen 
near Las Cuevas, northwest of San Fernando, and thence it was noted at intervals 
along our route southward to near San Pablo south of Calmallf. Its general range 
thus seems to include the northern half of the Peninsula, exclusive of the high moun- 
tains and the northwest coast region. Specimens in flower and immature fruit were 
taken at La Providencia Canyon, June 26, and in ripening fruit at Jaragudy, about 
58 miles southeast of San Fernando, September 9. This Acacia is usually a shrub 
1.2 to 4.5 meters high, but sometimes becomes a tree with a height of 6 meters. 
Dense clumps are often formed, the shade and thorny protection of which afford 
favorite hiding places for jack rabbits and other mammals, 
Albizzia occidentalis T. S. Brandeg. PALO ESCOVETA. 
The “palo escopeta,’’ so called by the people of the Cape District, is one of the 
characteristic species, growing as a forest tree 6 to 9 meters high, from the west coast 
near El Pescadero up the basal slope of the Victoria Mountains in the vicinity of 
Miraflores. A specimen with large, flat, ripening pods was taken on the road from 
El Pescadero to El Cajén, December 27. 
Calliandra californica Benth. 
Widely distributed in the Peninsula. Flowering specimens were collected at San 
Fernando, September 4; on Margarita Island, November 29; and between Santa 
Anita and Miraflores, January 19. It was an abundant species along much of our 
route, especially in the foothills of the mountains in the Cape District south of La 
Paz. It forms a shrub 1 to 2 meters high and seems to prefer rather sterile, stony 
hillsides. The species is recorded by Brandegee from San José del Cabo and from 
Magdalena and Margarita islands northward to San Borja. 
Lysiloma microphylla Benth. 
This tree is associated with Albizzia occidentalis in many places along the western 
and southern slopes of the Victoria Mountains in the Cape District. It grows to a 
