Type Species. Polybotrya osmundacea Humboldt & Bonpland ex Willdenow, of wide distribution in
A neotropical genus of about 40 species, of
which only one has been found in Puerto Rico.
This is sometimes separated in a genus Olfersia
on the basis of its 1 -pinnate blades, parallel venation,
and diflerences in rhizome anatomy. It
is also alleged to be terrestrial, not scandent, but
this is often not true (see photograph in Tryon
& Tryon, 1982: 537). The generic name is derived
from the Greek po/y, many + botrys, bunch
or cluster, referring to the clustering of the sporangia
on the spurlike fertile segments.
Special Literature. Tryon, R. M. & A. F. Tryon.
1982. Fems and allied plants, pp. 536-542, 30 figs.
Moran, R. C. 1987. Monograph ofthe Neotropical fem
genus Polybotrya (Dryopteridaceae). Illinois Nat. Hist.
Surv. Bull. 34: 1-138. (See note, p. 280.)