FEB. 1903. 



PLANTS YUCATAN,*; MILLSPAUGH. 



Sori forming a complete line on each margin of the segment from the 

 base to and including the apex; indusial membrane thin, about one- 

 quarter the breadth of the seg- 

 ment; sporangia long pediceled, 

 the pedicel twisted and jointed 

 at the apex; spores conoidal, the 

 apex blunt, the base slightly 



surface com- 



with rounded 



emarginate, the 

 pletely invested 

 verrucae. 



Plants large 



and 



as 



bushy. 



Stipes 30-40 cm. long. Fronds 

 30-40 x 25-30 cm. In fruit from 

 November to March. The plant 

 is called X-UAL-KANIL, "Yellow 

 Fly-brush," by the Mayas, who 

 use fascicles of the fronds bound 

 together by their stipes 

 whisks to drive away flies. 



Hab. Dry, open spots in woodlands. Island of Cozumel, Dr. 

 Gaumer 1885 ; and near the center of the island, Millspaugh, PL Uto- 

 wance 1551, 1565- Not known on the Peninsula. 



POLYPODIES. 



Rootstock creeping, branched, often chaffy-scaly, bearing scat- 

 tered roundish knobs from which the stipes arise from a distinct 

 articulation. (Except in Phegopteris, in which the stipe is continu- 

 ous with the rootstock. ) Sori round, naked, arranged in distinct 

 rows on each side of the midrib or the main straight veins, or irregu- 

 larly scattered, each borne on the apex or back of a vein. 



Goniopteris tetragona (Sw.) Presl. 

 Polypodium tetragonum Sw. 



Frond pinnatisect; pinnules lanceolate, the lower pinnatifid for 



at least one-third their length, 

 shortly petiolulate; segments 

 slightly scattered-hairy, 

 oblong, falcate, blunt or 

 bluntish, entire; veinlets free, 

 the lowest pair meeting below 

 the sinus. Rachis 4-gonal. 

 Sori serial along the veins, 

 midway of the veinlets, and 

 an odd larger one at the 

 sinus; sporangia pyriform, 

 slightly anastomose-veined 

 and bearing 1-2 aciculate 

 hairs at or near the apex ; 

 spores phaseoloid, partially 



invested by transparent, anastomosing wings. 



