The World Botanical Associates Web Page
Prepared by Richard W. Spjut
August 2004

Peucephyllum schottii
Las Vegas, NV
Spjut & Casterline 15740
Mar 2004

Peucephyllum schottii
San Jacinto Mts., CA
May 1973

Peucephyllum schottii
Gulf Coast, BCN
May 1993


Trees and Shrubs of Kern County (Sep 2012)

Peucephyllum schottii A. Gray 1859. Pygmy cedar. Aromatic shrub with numerous ascending to erect branches and persistent needle-like leaves on the upper branches, the whole plant generally rounded in outline, to 2 m high; leaves densely crowded, alternate, nearly round in x-section, 0.5–3 cm long, 1 mm wide, resinous dotted; flowering Dec–May, also in the fall; flower heads solitary at ends of branches, usually partly covered by uppermost leaves which grade into the involucral bracts; flowers all disk type, yellow.  Cypselae with a stake-like pericarpium and terminal capillary bristles about twice as long. Often among rocks in the lower elevation desert mountains below 4,500 ft; Mojave and Sonoran deserts, California, southern Nevada, western Arizona to Sonora and Baja California along the Gulf Coast, south to Isla San Marcos. Type from Colorado River, Sonora, Mexico. Kern Co.: Red Rock Canyon (Moe). 

            A sample of the aerial parts of the plant collected in Yuma Co, AZ in Mar 1964 showed confirmed antitumor active in KB and P-388.  Sample recollected by Spjut for antimicrobial screening in 1990 from northern Arizona for the University of Mississippi.  Two novel sesquiterpene lactones  were isolated along with three known flavonoids (Okunade et a. 1994, Phytochemistry 35: 191–94).