362 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
slopes of the Victoria Mountains as a thorny shrub 3 to 3.5 meters high. A fruiting 
specimen was taken at 720 meters near Rancho San Bernardo, January 20, Brandegee 
found this species in the same vicinity and states that it is common at middle eleva- 
tions on the west side of the mountains, sometimes forming impenetrable thickets. 
Lantana camara L, 
A flowering specimen of this Lantana was taken at 1,050 meters between Rancho 
San Bernardo and El Satz in the Victoria Mountains, January 21. It was common 
in the vicinity. This is another of the tropical or subtropical American species 
with a range extending to southern Lower California. 
Lantana involucrata L. 
This widely dispersed tropical and subtropical shrub is abundant in the Cape 
District south of La Paz, where it has an altitudinal range from near sea level to about 
1,200 meters on the southern slopes of the Victoria Mountains, Flowering and fruiting 
specimens were taken between El Cajén and El Sacatén, December 28; between 
San Bernardo and El Satz, January 21; and between El Parafso and El Triunfo, 
January 30. 
Lippia barbata T. S. Brandeg. 
The specimens on which Mr. Brandegee based this species were brought by a native 
of Comandt from La Giganta, a high mountain in the vicinity. A flowering specimen 
was taken by us on the road from Laguna to El Parafso in the Cape District south of 
La Paz, January 29. The plant was a shrub 1.8 to 3.5 meters high, occurring at about 
510 meters altitude on the north side of the mountains. 
Lippia formosa T. 8. Brandeg. 
A flowering specimen of this species was taken between San Pedro and Tres Pachitas 
in crossing the Peninsula south of La Paz, December 24. It was noted in several 
places in the same vicinity, growing 1.8 to 2.5 meters high along with other shrubby 
vegetation in the midst of a forest of Pachycereus calvus, one of the giant cactuses of 
the region. Brandegee describes it as a common bush with rather showy flowers, 
growing on the hills about Todos Santos. 
Lippia palmeri S. Wats. 
Not uncommon in rocky places among the hills 20 miles east of San Ignacio, where 
it was taken in flower October 19. It was also collected in flower along the road 
from Agua Colorada to Cerro Colorado northwest of La Paz, December 15. Brandegee 
records it from Miraflores in the Cape District south of La Paz. Lippia palmeri was 
described from specimens taken at Guaymas and therefore includes in its range 
subtropical areas on both sides of the Gulf of California. It is a small bush 0.5 to 
1.8 meters high. 
MENTHACEAE. Mint Family. 
Mesosphaerum insulare Standl. & Goldm.? 
On Espiritu Santo Island this shrub was observed to be common along the basal 
slopes of the rugged hills which form the high interior of the island, where it was 
collected February 7, 1906. It is one of the plants recently described from material 
obtained by our expedition. 
Mesosphaerum emoryi (Torr.) Kuntze. 
This Lower Sonoran shrub of Arizona and California seems to enter the Peninsula 
through the desert region east of the Sierra del Pinal and the San Pedro Mértir Moun- 
1See p. 311, 
