480 Eaton : Pteridophytes observed in Florida 



round-lobed or sinuate-undulate, most deeply on lower edges; 

 terminal portion equaling one half the frond or more, lanceolate, 

 acuminate, with 3-4 blunt sinuate lobes on each side, passing to 

 mere undulations near tip ; veins forming regular large paracostal 

 areoles and 2 or 3 large meshes beyond, mostly united at the 

 edge of the frond, often, especially in sterile fronds, with included, 

 simple or forked free veins ; sori mostly at a fork on the middle 

 of the paracostal nerve ; indusia firm, ample, nephroid, usually 

 firmly pressed over the sorus and with a free edge beyond. 



In three lime-sinks in Bauer's hammock, difficult of access as 

 it grew on the perpendicular walls out of reach. This fern was 

 first collected as an extreme form of 71 minima, which in carnage, 

 general cutting and vestiture it resembles. A careful comparison r 

 however, shows it to be intermediate between that and 7. corian- 

 drifolia, with which it was associated in two places, and it may 

 possibly be a hybrid between those species. The rootstocks of 

 the three are almost identical. The aspect is nearer that of 

 7. minima, which it also resembles in the flattened stipe, the fine 

 puberulent scales of the stipe and veins, in the texture, the cor- 

 date basal pinnae, the lower side of which is somewhat auriculate, 

 and in the more or less irregularly placed sori. It also lacks the 

 proliferous bulbils of 7. coriandrifolia. The areolation is more 

 like that of the latter species, though free veinlets are not rare, 

 especially in sterile fronds. The sori are also nephroid, a condi- 

 tion which is also found occasionally in 7. minima. Dedicated to 

 Mrs. Oakes Ames. 



Tectaria coriandrifolia (Sw.) Underw.* 



Rootstocks short, creeping, covered at the growing end with 

 lanceolate, filiform-acuminate, brown scales ; stipes 6-1 5, clustered, 

 nearly terete, spreading, 2-6 cm. long, with a few brown scales 

 at base, clothed, as well as the rachis, with hair-like, contorted, 

 gray or brown scales ; lamina pubescent, especially on the nerves, 

 oblong-lanceolate, slightly narrowed below, 6-10 cm. long, 2.5- 

 3 cm. broad, proliferous at the axils, thin, darkening in drying, 

 with 1-3 pairs of remote pinnae and a terminal lanceolate pinna ti- 

 lobed one ; lower pinnae shortly petioled, obliquely ovate with 

 2-4 rounded lobes, the lower basal ones much the largest ; second 

 pair of pinnae blunt-lobed below, sinuate or entire above ; termi- 

 nal pinna 8-10 lobed, the segments rounded, entire or more or 

 less toothed ; veins forming large paracostal areoles along the 



