in the area for the last several thousand years. No typi- 
cally aquatic grasses were found. None of the grasses 
represented seem to have been gathered for food, so that 
a continuous maize economy probably furnished the en- 
tire grain supply for the Bat Cave people. 
CYPERACEAE 
Scirpus Olneyi 4. Gray in Boston Journ. Nat. 
Hist. 5 (1845) 238. 
A complete inflorescence as well as several detached 
heads of §. Olneyi were found in stratum V. 
Scirpus validus Vah/ Enum. PI. 2 (1806) 268. 
A fruiting head of this bulrush was also found in stra- 
tum V. 
Scirpus sp. 
Fragments of the thick leaves of an aquatic plant ap- 
parently a Scirpus, were recovered from stratum IV of 
Bat Cave. 
The presence of these typically aquatic plants, as well 
as Typha latifolia, in strata LV and V would seem to be 
conclusive evidence for the presence of a permanent, al- 
though perhaps shallow, body of water in the area of 
Bat Cave during the period of occupation. 
LILIACEAE 
Yucca baccata Torrey in Emory Rept. U.S. & 
Mex. Bound. Surv. (Bot.) (1859) 221. 
Identifiable remains of this species were found in strata 
LP sed tlt. 
Yucca spp. 
Numerous portions of yucca leaves, seed pods and 
seeds were found throughout the deposit. In addition, 
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