350 Busu: A List oF THE Ferns oF TEXAS 
ADIANTUM TRICHOLEPIS Fee 
Rare; on exposed rocks in mountainous regions. 
No specimens of this species have been seen from Texas, but 
it was collected at the mouth of the Pecos, Val Verde County, by 
Bigelow, date of collection not ascertained. 
PTERIDIUM Scop. 
PreRipIuM AguitinuM (L.) Kuhn 
Pteris aquilina LL. 
In dry open rocky and sandy woods. 
SPECIMENS EXAMINED: Houston, Harris County, //a//, date of 
collection not given, but probably 1871 or 1872. 
PrERIDIUM AQUILINUM PSEUDOCAUDATUM Clute, Fern Bull. 8: 39. 
1900, as syn. 
Pteris aquilina caudata authors, in part, not Hooker, Sp. Fil. 
2: 196. 1858. 
In open sandy woods and fields. 
_ SPECIMENS EXAMINED: Big Sandy, Upshur County, Reverchon 
1194, 3404, May 27, 1901; Silver Lake and Gladewater, Gregg 
County, Reverchon 3403, May 22, 1900; Marshall, Harrison 
County, Bush 628, August 8, 1901; 1035, October 10, 190! ; 
Houston, Harris County, Lindheimer, September, 1842. 
PTERIDIUM CAUDATUM (L.) Maxon, Proc. U.S. Nat. Mus. 23: 631. 
4 My igor 
Pteris caudata 1. 
Pteris aquilina caudata Hooker. 
Pteridium aquilinum caudatum Kuhn. 
In deep swamps near the coast. 
No specimens of this species have been seen from the state, 
and is included in the list of Texas ferns on the authority of 
Clute (Fern Bulletin, 8: 38. 1900) and of Underwood and Eaton. 
CHEILANTHES Sw. 
The largest genus of ferns in the state, forming the most con- 
spicuous group of the Pteridophyta of Texas. The species are 
numerous in Mexico and adjacent territory, and it is probable that 
others will be discovered in Texas. 
