310 
den Nijs, J. C. M. 1983. Biosystematic studies of the Rumex 
acetosella complex (Polygonaceae). Ph.D. dissertation, Univ. of 
Amsterdam, Amsterdam, Netherlands. 157 pp., 6 appendices 
(reprints), each paginated separately. Published as Contr. Bot. 
Inst. Univ. Amsterdam 1983-1984(31). 
Denton, M. F. 1973. A monograph of Oxalis section Jonoxalis 
(Oxalidaceae) in North America. Publ. Mus. Michigan State 
Univ., Biol. Ser. 4: 459-615. 
1978. A taxonomic treatment of the Luzulae group of 
Cyperus. Contr. Univ. Michigan Herb. 11: 197-271. 
Desmarais, Y. 1952. Dynamics of leaf variation in the sugar maples. 
Brittonia 7: 347-387. 
Detling, L. E. 1939. A revision of the North American species of 
curainia. Amer. Midl. Naturalist 22: 481-520. 
de Wet, J. M. J. 1978. Systematics and evolution of Sorghum sect. 
Sorghum (Gramineae). Amer. J. Bot. 65: 477-484, 
DeWolf, G. P. 1954. Notes on cultivated labiates 4. Satureja and 
some related genera. Baileya 2: 143-150, 
Dierker, W. W. 1983. [miscellaneous state and county records]. Pp. 
95-97 in W. R. Weber & D. Ladd (editors), Missouri botanical 
record. Missouriensis 4: 95-98. 
8 
Dietrich, W. & P. H. Raven. 1976. An earlier name for Oenothera 
strigosa (Onagraceae). Ann. Missouri Bot. Gard. 63: 382-383. 
& W. L. Wagner. 1988, Systematics of Oenothera section 
Oenothera subsection Raimannig and subsection Nutantigemma 
(Onagraceae). Syst. Bot. Monogr. 24: 1-91, 
Doolen, W. S. O. 1984. The vascular flora of Big Oak Tree State 
Park, Mississippi County, Missouri. M.S. thesis, Southern Illinois 
niv., Carbondale, Illinois, v, 113 pp. 
. Chenopodium simplex, an older name for C. 
gigantospermum (Chen podiaceae). Madrofio 35: 162. 
Dorr, L. J. 1990. A revision of the North American genus Callirhoe 
(Malvaceae). Mem. New York Bot. Gard. 56: 1-76. 
described by S. B. Buckle 
Doyle, J. J. 1981. Biosystematic studies on the Claytonia virginica 
Drapalik, D. J. & R. H. Mohlenbrock. 1960. A Study of Eleocharis, 
seri¢s Ovatae. Amer. Midl. Naturalist 64: 339-341, 
Dress, W. 1975. Cactaceae (Opuntia). Pp. 164-165 in J. Ingram & 
H. E. Moore (editors), Nomenclatural notes for Hortus Third. 
Baileya 19: 163-171, 
