Field and Laboratory
Volume 19, Number 4 (1951)
Articles
Geographic Variation in Toads of the debilis Group of Bufo
Ottys Sanders and Hobart M. Smith
Two New Texas Species of Physostegia (Labiatae)
Lloyd H. Shinners
Yucca Freemanii, a New Species from Northeastern Texas
Lloyd H. Shinners
Agave lata, a New Species from North Texas and Oklahoma
Lloyd H. Shinners
The North Texas Species of Mirabilis (Nyctaginaceae)
Lloyd H. Shinners
Notes
Ocular Asymmetry in certain Texas Isopods
S. W. Geiser
Tragia urticifolia Michx. var. texana Shinners, var. nov.
Lloyd H. Shinners
Croton glandulosus L. var. hirsutus Shinners, var. nov.
Lloyd H. Shinners
