GOLDMAN—PLANT RECORDS OF LOWER CALIFORNIA. 367 
Symphoricarpos parishii Rydb. 
A common shrub 1 to 1.5 meters high, confined mainly to the limited Canadiar 
Zone areas on northerly slopes in the San Pedro M4rtir Mountains, but descending 
along cold streams to at least 2,400 meters in the upper part of the Transition Zone. 
Taken in flower at Vallecitos, July 15. 
CUCURBITACEAE. Gourd Family. 
Ibervillea sonorae (S. Wats.) Greene. PLATE 133. 
This remarkable species has a wide range in the lower part of the Lower Sonoran or 
Subtropical zone on both sides of the Gulf of California. It is a desert plant, grow- 
ing in sandy places as a slender vine 1 to 1.5 meters long from an enormously enlarged 
woody, base, which may or may not project above the surface of the ground. It was 
first noted by us at Pozo Altamirano, 30 miles south of Calmallf, October 3, specimens 
in fruit and flower being then taken. It is common on the low sandy plains through- 
out the southern part of the Peninsula and on Cerralvo Island, where the largest 
individual seen had a basal diameter of over 60 cm. The average diameter, how- 
ever, is perhaps not more than 15cm. As the bulbous basal part projects but little, 
if at all, above the surface, these plants are usually inconspicuous, especially during 
the long dry season when growth is interrupted and the slender terminal parts wither 
back to the persistent base. 
AMBROSIACEAE. Ragweed Family. 
Hymenoclea monogyra Torr. & Gray. ROMERILLO. 
The “‘romerillo,” as it is locally known, occurs in suitable situations nearly through- 
out the Peninsula. From a center of abundance in the Lower Sonoran Zone it ranges 
along the Pacific coast, in the vicinity of Ensenada, a short distance into the Upper 
Sonoran Zone and both in the Cape District and along the coast of Sinaloa enters the 
subtropical belt. It is limited locally to sandy bottoms along stream beds, in many 
places forming thickets in the deep sand, from which most other shrubs are excluded. 
It was taken in flower or fruit at Rosarito, September 25; El Potrero, 25 miles south- 
west of Mulegé, October 31; San Pedro, 18 miles south of La Paz, December 23. 
Brandegee records the species in the Cape District from San José del Cabo to La Paz, 
ASTERACEAE. Aster Family. 
Alvordia fruticosa T. 8S. Brandeg. 
Known only from the Cape District. This species is common at low elevations, 
growing asa much branched shrub 3 to 4.5 meters in height. It was taken in flower on 
the road between El Cajén and El Sacatén, December 28. 
Artemisia californica Less. CALIFORNIA SAGEBRUSH. 
Recorded by Brandegee from ‘Las Huevitas, [Las Cuevas?], near Rosario.”” This 
point is probably near the southern limit of its range in Lower California. It was 
noted at a number of places on the west slope in the San Pedro Martir Mountain region. 
The species belongs to the Upper Sonoran Zone. 
Artemisia tridentata Nutt. SAGEBRUSH. 
This species was found sparingly in the Upper Sonoran Zone at about 750 meters 
near the western rim of San Rafael Valley, about 20 miles east of Ensenada. A 
specimen with leaves only was taken May 31. 
