184 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
(1810). Aspidium trifoliatuvi of authors, in part, not Polypodium 
trifoliatum L., based on Plumier's plate 148, see Underw., I. c, p. 
199-200.— El Valle, Miller & Johnston, no. 168, Aug. 2. Reported 
by Urb. (Symb. Ant., vol. 4, p. 23), under the name of Aspidium tri- 
foliatum., as occurring upon iNIargarita Island, his determination 
being based upon some of Miller & Johnston's material of 1901. 
Tropical America generally. 
T. PLANTAGiNEA (Jacq.) Maxon, Contrib. U. S. nat. herb., vol. 10, 
p. 494 (1908). Polypodium plantagineum Jacq., Coll. bot., vol. 2, 
p. 104, pi. 3, fig. 1 (1788). Aspidium plantagineum Griseb., Abh. 
kon. Gesellsch. Wiss. Gottingen, vol. 7, p. 286 (1857). — Juan Griego 
trail, alt. 500 m., Johnston, no. 148, July 31. Tropical America. 
Variable. 
T. PuRDiAEi (Jenman) Maxon, Contrib. U. S. nat. herb., vol. 10, 
p. 494 (1908). Aspidium Purdiaei Jenman, Gard. chron., ser. 3, 
vol. 22, p. 282 (1897). Nephrodium Sherringiae Jenman, Journ. 
bot., vol. 25, p. 99 (1887), not N. Sherringii Jenman (1879). As- 
pidium psammisorum C Chr., Ind. Fil., p. 89 (1905). — El Valle, 
Miller & Johnston, no. 158, Aug. 10; Juan Griego trail, alt. 450 m., 
Johnston, no. 173, July 31. Known also from Trinidad. 
Oleandra Cav. 
O. NODOSA (Willd.) Presl, Tent. Pterid., p. 78 (1836). Aspidium 
nodosum. Willd., Sp. pi., vol. 5, p. 211 (1810). — Juan Griego trail, 
alt. 300 m., Johnston, no. 189, July 29. American tropics. Ascribed 
also to Africa. 
Dennstaedtia Bernh. 
D. ORDiNATA (Kaulf.) Moore, Ind. Fil., p. 306 (1861). Dicksonia 
ordinata Kaulf., Enum. Fil., p. 226 (1824).— El Valle, Miller & 
Johnston, no. 160, Aug. 16; Juan Griego trail, alt. 450 m., Johnston, 
no. 185, July 29. Widely distributed in tropical America. 
Nephrolepis Schott. 
[N. EXALT ATA (L.) Schott, Gen. Fil., pi. 3 (1834). Polypodium 
exaltatum L., Syst. nat., ed. 10, vol. 2, p. 1326 (1759). — Referred by 
Urban, Symb. Ant., vol. 4, p. 27, to Margarita.] 
N. PECTiNATA (Willd.) Schott, Gen Fil., under pi. 3 (1854). Aspi- 
dium pectinatum W^illd., Sp. pi., vol. 5, p. 223 (1810). — San Juan 
Mt., alt. 790 m., Johnston, no. 149, July 16. Tro})ics. 
