Appendices & Glossary - Botanical Research Institute of Texas

SPECIES OF PETERIDOPHYTES, GYMNOSPERMS, AND MONOCOTS OF CONSERVATION CONCERN/APPENDIX TWELVE
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Xyris scabrifolia R.M. Harper, ROUGH YELLOW-EYED-
GRASS, HARPER’S YELLOW-EYED-GRASS, ROUGH-LEAF
YELLOW-EYED-GRASS. (TOES 1993: V; RARE 2002a:
G3S2SOC)
Xyris smalliana Nash, SMALL’S YELLOW-EYED-GRASS.
IFET.
Yucca cernua Keith, WEEPING YUCCA. While not officially
designated as such (because of the recentness
of its discovery), we consider this East
Texas endemic species to be of conservation
concern; it is currently known from only 7
populations (Keith 2003; E. Keith, pers. comm.).
IFET. e T
Yucca necopina Shinners, GLEN ROSE YUCCA, BRAZOS
RIVER YUCCA. (TOES 1993: V; RARE 2002a, 20002b:
G1G2S1S2; however, a lower rank may be appropriate
since the species is apparently more
common than previously known—Carr 2001) e
Zephyranthes refugiensis F.B. Jones, REFUGIO ZEPHYR-
LILY, REFUGIO RAIN-LILY. Flagg et al. (2002b) indicated
that this species is of conservation concern.
(RARE 2001 and RARE 2002b: G2G3S2S3) e
Zizania texana Hitchc., TEXAS WILD RICE. This federally
endangered species is known only from
the upper 4 km of the spring-fed San Marcos
River in Hays Co. (TOES 1993; Horne & Kahn
1997; Terrell et al. 1997) (TOES 1993: I; RARE
2002a: G1S1LEE) e T