(Documentary Artifact): One b/w photographic print of Roberto Thomson standing next to a cirio or Boojum tree. Notes on the verso of the print indicate that this plant is 30 feet tall and 37.5 inches at the base and in full leaf. Davis and his group climbed 1,000 feet to take this photograph. This is farthest south the plant will grow.
Notes on verso of print:
OP 14961-156 88:17050-156/ 10/B/10-3/MAR. 23, 1926/ SAN IGNACIO/ Baja Calif Sur/ The furthest south of/ cirio – 1926/ CIRIO, SINGULAR DESERT PLANT/ 30′ HIGH, 37 1/2′ AT BASE IN FULL LEAF. DAVIS & GROUP CLIMBED 1000 FT. TO GET PICTURE. THIS IS SOUTHERNMOST LIMIT OF/ THIS PLANT