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1. TOXICODENDRON. Poison oak. 
1. ToxXICODENDRON DIVERSIFoLIUuM (Torr. & Gray) Greene, Leaf- 
lets 1: 119. 1905. 
Rhus diversiloba Torr. & Gray, Fl. N. Am. 1: 218. 1838. 
ole locality: “Borders of woods, etc. Oregon,” and ‘‘Cali- 
forni 
Distribution: Western Washington, southward to northern 
Lower California. Several species have been segregated from this 
by Greene but I can detect no specific differences between 
the specimens which I have cited and those from farther north. 
In any section there is marked variation in the foliage and 
pubescence, so that these characters cannot be relied upon, 
within certain limits, in making specific distinctions. Upper 
Sonoran. 
Specimens examined: Santa Barbara, Elmer 3940; Fort Tejon, 
Abrams &§ McGregor 298; Red Reef Canyon, Topatopa Moun- 
tains, Abrams (F McGregor 144; Sulphur Mountain, Abrams & 
McGregor 46; San Gabriel, Bigelow, 1854; Pasadena, Jones 
320) 
hus glabra L. has been reported by Parish (Bot. Gaz. 38: 461) 
from “Chino Cajion, near Palm Springs, at the desert base of 
San Jacinto Mt.,” where it was collected by Hasse. 
2. SCHMALTZIA. Souaw BERRY. 
Fruit not villous. 1. S. cructata. 
Fruit villous. 
Herbage minutely puberulent. 2. S. straminea 
Herbage densely soft-pubescent. 3. S. malacophylla. 
1. ScumMa.tzia cructata Greene, Leaflets 1: 139. 1905. 
Type oe “Hot Springs in the northern part of San Diego 
Co., Calif. 
Distribution: I have not been able to examine the original 
specimens upon which this species was based, nor have I seen any 
plants that answer the description. The validity of the numerous 
species proposed by Greene, for what has passed as S. trilobata 
(Rhus trilobata) can only be judged by thorough field work and 
the critical examinations of a large series of specimens. Upper 
Sonoran. 
