130 
Carya ovata (Miller) K. Koch, shagbark hickory, p. 517 
var. Ovata 
f. ellipsoidalis (Sarg.) Steyerm. (the infraspecific taxonomy 
of this species requires further study; note that a 
number of authors, including Little (1979), have 
suggested that minor variants in this genus of 
morphologically plastic species are not worthy of 
taxonomic recognition) 
f. fraxinifolia (Sarg.) Steyerm. [M: C. ovata var. fraxinifolia 
Sarg.] (see note under f. ellipsoidalis) 
f. nuttallii (Sarg.) Steyerm. [M: C. ovata var. nuttallii Sarg. ] 
(see note under f. ellipsoidalis) 
f. ova 
C. texana Buckley, black hickory, Ozark pignut hickory [S: incl. 
var. villosa (Sarg.) Little] (Little, 1979), p. 522 
f. glabra (E. J. Palmer & Steyerm.) Steyerm. (see note 
under C. ovata f. ellipsoidalis, above) 
» texana 
C. tomentosa (Poiret) Nutt., mockernut hickory, white hickory 
(note that some authors continue to refer to this taxon 
as C. alba L., a name that should be rejected as a 
nomen ambiguum (cf. Little, 1979), p. 518 
var. tomentosa (see note under C. ovata f ellipsoidalis, above) 
f. ficoidea (Sarg.) E. J. Palmer & Steyerm. 
f. ovoidea (Sarg.) E. J. Palmer & Steyerm. 
f. tomentosa 
var. subcoriacea Sarg. 
JU GLANS, walnut 
Juglans cinerea L., butternut, p. 511 
J. nigra L., black walnut, p. 510 
f. nigra 
f. oblonga (Marshall) Fern, 
consensus on whethe 
control, and it re 
[M: J. nigra] (there is no 
T this rare variant is under genetic 
quires further study) 
LABIATAE (see LAMIACEAE) 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
