2$T\ FLORA OF BOULDER, COLORADO IO3 



Family 33- ULMACEAE Mirbel. Elm family. 



120. TTLMUS L. ELM. 



318. TI. Americana L. AMERICAN ELM. 



A tree of considerable size occurs in a wild place near the 

 entrance to Boulder Canon, doubtless self-sown from trees 

 planted for shade, 5500 ft. (Daniels). 



NEWFOUNDLAND to MANITOBA; FLORIDA to TEXAS. 



121. CELTIS L. HACKBERRY. 



319. C. reticulata Torr. VEINY-LEAVED HACKBERRY. 

 Rocky ridges on the mesas and foothills, scarce, 5700- 



6500 ft. (Daniels, 796). 



TEXAS to COLORADO and ARIZONA. 



Order 18. SANTALALES. 

 Family 34. LORANTHACEAE D. Don. Mistletoe family. 



122. KAZOUMOFSKYA Hoffm. SMALL MISTLETOE. 



320. R. Americana (Nutt.) Kuntze [Arceuthobium Ameri- 

 canum Nutt.]. AMERICAN SMALL MISTLETOE. 



On Pinus contorta Murray ana (Oreg. Com.) Engelm. at 

 Sunset, 7700 ft. (Rydberg). 



BRITISH COLUMBIA to COLORADO and OREGON. 



321. R. cryptopoda (Engelm.) Coville [Arceuthobium cryp- 

 topodum Engelm; A. robustum Engelm]. HIDDEN-FOOTED 



SMALL MISTLETOE. 



On Pinus scopulorum (Engelm.) Lemmon upon high ridge 

 well toward eastern summit of Green Mt, 7500-8000 ft. 

 (Daniels, 770). Also between Sunshine and Ward (Rydberg). 



TEXAS and COLORADO to ARIZONA and MEXICO. 



Family 35. SANTALACEAE R. Br. Sandalwood family. 



123. COMANDRA Nutt. BASTARD TOAD-FLAX. 



322. C. pallida A. DC. PALE BASTARD TOAD-FLAX. 

 Frequent on the plains, mesas, and foothills, 5100-8000 



ft. (Daniels, 49). St. Vrain Canon (Coulter in Wabash Col- 

 lege Herb.). 



MANITOBA to BRITISH COLUMBIA; TEXAS to CALIFORNIA. 



