360 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
was later found in a similar situation at San José del Cabo and in rocky places on 
Cerralvo Island. At San José del Cabo the fruit was ripening January 8. Brandegee 
lists the species as a small tree not uncommon along the base of the mountains, in 
the Cape District south of La Paz. The fruit he describes as about an inch in diame- 
ter, black when ripe, and very pleasant to the taste. He gives “‘guayparin” as a 
native name, but it was pointed out to us as ‘“‘zapotillo,”’ 
OLEACEAE. Olive Family. 
Fraxinus attenuata Jones. Fresno. ASH. 
Noted as common in the Upper Sonoran Zone along canyons in the hills near Ense- 
nada and eastward as far as Ojos Negros in San Rafael Valley. It is a shrub or small 
tree 3 to 4.5 meters high. Specimens with ripe fruit were taken at Ensenada, May 20, 
and at the same locality, in flower and still retaining old fruit, February 28. The 
species was recorded by its describer from Valley of Palms, Lower California, and 
Catalina Mountains, Arizona. 
APOCYNACEAE. Dogbane Family. 
Plumiera mexicana Lodd. CACALOXOCHITL. 
A specimen in fruit, taken between Valle Flojo and El Pescadero, is somewhat 
doubtfully referred to this species. It represents a genus widely distributed in 
tropical America and in the Old World. This species was seen in a few places at 
low elevation south of La Paz. It forms a tree 6 to 9 meters high. According to 
Brandegee, who also recorded specimens, it is known locally as ‘‘cacaloxéchitl,”’ 
an old Aztec word and the same term which is applied to it in Central America. 
Vallesia dichotoma Ruiz & Pav. 
This representative of the tropical flora of the Peninsula was first seen in the hills 
about 20 miles east of San Ignacio, where a flowering specimen was taken October 19. 
It was more abundant at low elevations south of La Paz, as a small tree 3 to 4.5 meters 
high. Brandegee records it from San Gregorio and refers to it material collected 
by Palmer at Mulegé. The flowers are small and nearly hidden in the dense foliage. 
The species occurs also in about the same latitude along the coast of Sonora and 
Sinaloa. 
ASCLEPIADACEAE. Milkweed Family. 
Rothrockia cordifolia A. Gray, TALAYOTE. 
Vines of this type were common and in many places conspicuous climbers over 
other vegetation along our route in the hill country from Comandt southward. Flow- 
ering specimens were taken at Comandti, November 6, and between Tres Pachitas 
and Valle Flojo, December 25. Brandegee records it as a common plant of the Cape 
District. 
CONVOLVULACEAE. Morning-glory Family. 
Ipomoea pes-caprae (L.) Sweet. GOAT’S-FOOT MORNING-GLORY. 
This morning-glory, so widely distributed on tropical shores, is a very common 
beach plant in suitable places along the coasts of the Cape District south of La Paz. 
It spreads in rank profusion over the sand dunes, the prostrate branches reaching a 
length of 6 to 12 meters, <A flowering specimen was taken between Cape San Lucas 
and San José del Cabo, January 4. Brandegee records the species on the ocean 
beach at Todos Santos, San José del Cabo, and La Paz. 
*Zoe 2: 151, 1891, 
