27 November 2023.
Somervell County, Texas, United States
Locality: Glen Rose, Texas: Parkview Dr, about 400 feet north of U.S. Highway 67.
Coordinates: 32.2498, -97.7350
(Map it)
Elevation: 207m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Nice remnant savannah, native grasses with intact woody mottes. Incomplete residential development, but building appears to be commencing again. Slope: less than 5%. Aspect: South-southwest. Elevation: 679 feet.
Number of plants sampled: 10
Associated species: Toxicodendron pubescens [as Rhus toxicodendron]; Quercus buckleyi; Quercus fusiformis; Rhus aromatica; Smilax bona-nox; Ulmus crassifolia; Rhus lanceolata; Baccharis neglecta; Schizachyrium scoparium; Sida sp.
Comment: Pale-leaf yucca is endemic to primarily rocky soils and outcrops of the Blackland Prairie and Fort Worth Prairie (Grand Prairie) of North Central Texas; it extends south and southwest into the Lampasas Cut Plains and Edwards Plateau. Plants can be singular, but typically form loose colonies of rosettes, acaulescent, with branching subterranean caudices; rosettes 10–30 per colony, each rosette with fewer than 100 leaves. Leaf blade is striking glaucous blue with a yellow margin, lanceolate, straight, flat but becomes concave near apex, widest above middle, 8–20” long and 0.5–1.75” wide, flexible; margins denticulate or sometimes wavy. Inflorescences paniculate, branching, often distally racemose, rising 2-4 feet above rosettes. Flowers pendent; perianth campanulate; tepals distinct, greenish white, elliptic to ovate, in spring. Fruits are oblong-cylindric capsules, 2 inches by 1 inch, erect, dehiscent, septicidal. Seeds dull black, thin. Note: plants of the Glen Rose ecotype are predominantly singular rosettes. Seeds collected from 10 plants.
Collector(s):