LYGODESMIA, skeleton plant 
Lygodesmia juncea (Pursh) D. Don, p. 1643 
MARSHALLIA, Barbara’s buttons 
Marshallia caespitosa Nutt. ex DC., p. 1591 
var caespitosa 
var. signata Beadle & F. Boynton 
MATRICARIA, wild chamomile 
*Matricaria discoidea DC., pineapple weed [S, G, M: M. 
matricarioides (Less.) Porter] (Rauschert, 1974), 
1604 
*M. perforata Mérat, scentless false chamomile [S: M. maritima L. 
var. agrestis (Knaf) Wilm.; G: M. maritima] 
(Rauschert, 1974), p. 1602 
¢M. recutita L., wild chamomile, false chamomile, German 
chamomile [S, G, M: M. chamomilla L.] (Rauschert, 
1974), p. 1602 
MEGALODONTA [S: BIDENS] 
(Roberts, 1982, 1985) 
Megalodonta beckii (Torrey ex Sprengel) E. Greene, water 
marigold [S: Bidens beckij Torrey ex Sprengel] 
Oberts, 1982, 1985), p. 1590 
MICROSERIS [S: AGOSERIS; mM: NOTHOCALAIS] 
(Cronquist, 1948) 
Microseris cuspidata (Pursh) Schultz-Bip., Prairie dandelion [S: 
e 
erls Cuspidata (Pursh) D. Dietr.; M: Nothocalais 
ory (Pursh) E. Greene] (Cronquist, 1948), 
S: Steyermark : Great Plains Flora M: Mohlenbrock 
