848 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
meters, 20 miles east of San Ignacio, October 19. It grows asa shrub 1.8 to 3.5 meters 
high and appears to belong to the subtropical flora. Recorded by Brancegee from 
Magdalena Island, San Julio Canyon, and San José del Cabo. 
Karwinskia humboldtiana Zucc. 
A specimen in fruit, taken about 5 miles southwest of El Potrero, October 31, has 
been referred to this species by Mr. Brandegee. Another, also in fruit, which may 
represent another species, but is provisionally included in this, was collected between 
Cerro Colorado and Rodriguez, December 16. Brandegee records the species from 
La Paz, Todos Santos, and San José del Cabo. Karwinskia humboldtiana is appar- 
ently a very variable and widely ranging species, or possibly more than one species 
is passing under this name. As recognized at present, it ranges in the warmer areas 
from southern Texas and Lower California to southern Mexico or Guatemala. In 
southern Lower California it is associated with many tropical species. It grows here 
as a shrub 2.5 to 3.5 meters high. 
Rhamunus californica Eschw. CALIFORNIA BUCKTHORN. 
Specimens referred to this species by Mrs. Brandegee were taken in the San Pedro 
Martir Mountains. The species is common at the upper levels and was flowering at 
1,500 meters on northwest slopes near El Pifién, July 7, while it bore both flowers 
and partly grown fruit at 2,100 meters near La Grulla, July 20. 
Rhamuus crocea Nutt. EVERGREEN BUCKTHORN. 
The evergreen buckthorn is abundant in the Upper Sonoran Zone along the western 
side of the Sierra del Pinal and San Pedro Martir mountains, especially on open 
slopes, at about 1,350 meters altitude. Specimens were collected as follows: Laguna 
Hanson (1,680 meters), in flower, June 2; between Rancho Santo Tomas and San An- 
tonio (1,350 meters), in about full grown but still green fruit, July 28; near San Antonio 
(750 meters), in ripe fruit, August 1. 
MALVACEAE. Mallow Family. 
Abutilon californicum Benth. 
This shrub was discovered at Magdalena Bay on the voyage of the Sulphur. We 
collected it in flower and ripe fruit at Tinaja de San Esteban, 25 miles north of San 
Ignacio, October 5. It appears to belong to the subtropical flora of the Peninsula. 
Brandegee records it from Magdalena and Margarita islands, from the adjacent main- 
land, and from San José del Cabo. 
Abutilon palmeri A. Gray. 
A handsome shrub, 1.8 to 3.5 meters high. A specimen was taken in flower and fruit 
along the road from Agua Colorada to Cerro Colorado, December 15. Brandegee records 
this species from La Paz and Todos Santos, and specimens referred here were collected 
by him on Margarita Island. 
Gossypium herbaceum L. CoTTon. 
Cotton was formerly cultivated at San José del Cabo, La Purisima, Comandt, and 
as far north as San Fernando, but has been neglected in more recent years. <A few 
plants were growing in old fields and gardens. Brandegee records the species as 
escaped from cultivation at San José del Cabo. 
Gossypium davidsonii Kellogg. DAVIDSON COTTON. 
Wild cotton, referred to this species by Brandegee, was seen several times in the 
hills between Cerro Colorado and the Cafién de los Reyes in crossing the Peninsula 
