DICKSONIA PILOSIUSCULA, Willdenow. 
Hay-scented Fern; Hairy Dicksonia. 
Dicksonia PILOSIUSCULA: Root-Stock very slender, creep- 
ing, much elongated; stalks scattered, erect, sometimes a foot 
long, greenish in the living plant, fading to brownish-straw- 
color, slightly puberulent ; fronds one to three feet long, ovate- 
lanceolate in outline, long-pointed, delicately herbaceous, hairy 
and minutely glandular, pinnate or almost bipinnate; pinnae 
numerous, lanceolate, pointed, the second pair a little longer 
than the first; pinnules adnate to the secondary midrib, and 
usually decurrent on it, rhomboid-ovate, pinnatifid into oblong 
and obtuse cut-toothed lobes ; sori minute, in cup-like involu- 
cres which are seated on minute recurved teeth, usually one 
at the upper margin of each lobe of the pinnules. 
Dicksojiia pilosiuscula, Willdenow, “Enum. PI. Hort. BeroL, p. 1076: 
Sp. Fil., V, 484. — PuRSH, FI. Am. Sept., ii, p. 671. — Hooker, 
FI. Bor.-Am., ii, p. 264. — Torrey, FI. New York, ii, p. 502. — 
Bigelow, FI. Boston., ed. iii, p. 424. — Wood, Botanist and 
Florist, p. 376. 
Polypodium pilosiusculum, Muhlenberg “ in litt.” 
Sitolobium (or Sitobolium) pilosiusculum, Desvaux, “Prodr., p. 262.” 
Adectum pilosiusculum, Link, Fil. Hort. BeroL, p. 42. 
