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1a. IoMERIS ARBOREA GLOBOSA Coville, Proc. Biol. Soc. Wash. 7: 
73. .og2. 
Isomeris globosa Heller, Muhlenbergia 2: 50. 1905. 
Type locality: “On Caliente Creek, a few miles above Caliente, 
Kern County, California.” 
Distribution: Upper end of the San Joaquin Valley in the vicinity 
of Caliente westward to the boundary of San Luis Obispo and 
Santa Barbara Counties, and also on the Sespe Creek in Ventura 
County. There is considerable variation of the type form in the 
vicinity of San Diego, and on the desert slopes the two apparently 
intergrade. . 
Specimens examined: Sespe Creek, near Ten Sycamore Flat, 
Abrams &§ McGregor 177; vicinity of Fort Tejon, Abrams S Mc 
Gregor 280. 
1b. IsoMERIS ARBOREA ANGUSTATA Parish, Muhlenbergia 3: 128. 
1907. 
Type locality: ““About Palm Springs and Whitewater.” 
Distribution: Mohave and Colorado Deserts also on Cedros 
Island (Anthony 7). Lower Sonoran. 
Specimens examined: Desert slope of Tehachapi Pass, Abrams 
€§ McGregor 504. 
HYDRANGEACEAE. Hyprancea Famity. 
1. PHILADELPHUS. Syrinea. 
1. PHILADELPHUS PUMILUS Rydb. N. Am. Fl. 22: 173. 1905. 
Type locality: “In rocky places, San Jacinto Mountains, south- 
ern California, at an altitude of 2500 meters.” 
Distribution: According to Hall this wild syringa is very com- 
mon among rocks in the upper parts of the Transition from Lake 
Surprise to the head of Round Valley, San Jacinto Mountains, 
and “is most plentiful on ridges overlooking the Colorado Desert 
at 8000-9000 ft. alt., where the low bushes, covered with profusion 
of white flowers, are very conspicuous on the rocky walls in 
August.” 
Specimens examined: Vicinity of Tamarack Valley, San Jacinto 
Mountains, Hall 2500. 
