PETRORHAGIA 
[S: DIANTHUS] (Rabeler, 1985) 
+Petrorhagia prolifera (L.) P. Ball & Heyw. [S: Dianthus prolifer 
L.] (Rabeler, 1985), p. 661 
SAGINA, pearlwort 
Sagina decumbens (Elliott) Torrey & A. Gray, trailing pearlwort, 
. 642 
ssp. decumbens 
*S. procumbens L. (Crow, 1978) 
SAPONARIA, soapwort 
(see also VACCARIA) 
¢Saponaria officinalis L., bouncing bet, soapwort, p. 660 
SCLERANTHUS, knawel 
¢Scleranthus annuus L., knawel, annual knawel, p. 638 
SILENE, ca 
[S, M: incl. LYCHNIS} his, 1978) 
Silene pepe L., sleepy catchfly, p. 654 
f. antirrhin 
f. seen Farw. [G: S. antirrhina] (the infraspecific 
taxonomy of this species requires further study) 
f. bicolor Farw. [G: S. antirrhina] (see aber) 
f. deaneana Fern. [G: S. antirrhina] (see bove) 
*+S. armeria L., sweet William catchfly (Mihlenbach, 1979) 
S. caroliniana Walter, wild pink, Pp. 
- var. wherryi (Small) Fern. 
+S. conoidea L., p. 656 
+S. csereii Baumg., smooth catchfly, glaucous campion, p. 657 
¢S. dichotoma Ehrh., forked pane p- 657 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
