MARANTACEAE, arrowroot family 
THALIA 
Thalia dealbata Roscoe, thalia, p. 468 
NAJADACEAE, naiad family 
(see also POTAMOGETONACEAE, 
RUPPIACEAE, ZANNICHELLIACEAE) 
NAJAS, naiad 
Najas flexilis (Willd.) Rostkov & F. W. Schmidt, p. 57 
N. gracillima (A. Braun ex Engelm.) Magnus, p. 57 
N. guadalupensis (Sprengel) Magnus, p. 57 
var. guadalupensis 
ORCHIDACEAE, orchid family 
APLECTRUM, putty root, Adam and Eve orchid 
Aplectrum hyemale (Muhlenb. ex Willd.) Torrey, putty root, 
Adam and Eve orchid, p. 486 
f. hyemale 
CALOPOGON, grass pink 
Calopogon tuberosus (L.) Britton, Sterns & Pogg., grass pink 
[S: C. pulchellus (Salisb.) R. Br. var. pulchellus] 
(Mackenzie, 1925; Voss, 1966), p- 478 
var. tuberosus 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
245 
