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are totally different from the species of Schkuhr by their frond having a 

 pinnatifid apex and bearing scales on the rachis and midrib below, while 

 P. neriifolium has a terminal pinna like the lateral ones and is entirely 

 glabrous; from P. loriceum, a form of which (Gon. pectinatum J. Sm.) has 

 a few similar scales on the rachis, our species differs by its distant pinnæ. 



Pol) podium lævigatum Gav. var. crispatum n. var. 



Rhizome long trailing, clothed throughout with persistent, red-brown, 

 crisped, long-acuminated, patent scales, like those of the following P. Gala- 

 theœ. Stem 4 — 8 cm. long, lamina not or slightly decurrent at the base; 

 colour pale-green; only two rows of meshes by a frond of like breadth 

 as ordinary lœvigatum. 



Minas Geraes: Galdas, 1. Mosén 2220. 



Poly podium tialatheæ nom. no v. {Craspedaria crispata Fée Grypt. vase. 

 Brés. 1, 119, tab. 36, fig. 2, 2, 66, non P. crispatum (J. Sm.) Hook. sp. 

 til. 5, 1. — P. hjcopodioides part. Bak. Flor. bras. 1, part. 2, 533 — P. 

 vacciniifolium Bak. Journ. Linn. Soc. 14, 24). 



Glaziou 2072, 4423, 5282, 5283, and gathered long ago by Didrichsen 

 during the Danish Galathea Expedition 1845 — 1847 near Rio. 



This species is intermediate between P. vacciniifolium Langsd. et Fisch, 

 and P. hjcopodioides L., next to the former; the fronds are very different, 

 the sterile ones being from shortly ovate to lanceolate, the fertile ones 

 narrow-linear; the essential character of this species yet shows the rhizome, 

 which is thicker than in the two allied species and clothed throughout 

 with persistent, crisped and patent scales. 



Cyclodium rigidissimum n. sp. (or Aspidium rigidissimum n. sp.). 



Rhizome not seen. Stems strong, erect, naked or with a few deciduous 

 red-brown, linear-acuminate scales. Fronds pinnate, glabrous, dimorphous. 

 Sterile frond ovate-oblong, 5 l hi dm. long, 2 — 2 l /s dm. wide at the 

 middle; rachis above deeply and narrowly channelled; pinnæ 15 — 16 jugate 

 with a terminal one, approximate, overlapping one another, horizontal, 

 short-stalked, 3 — 4 cm. broad, ovate-oblong or elliptical, acute at the point, 

 their base nearly equal-sided, cuneate-truncate or on the lower side a little 

 more obliquely cuneate; margins irregularly undulate-crenate, thickened; 

 venation as in C. meniscioides (Willd.) with 4 or 5 aréoles on each side of 

 the primary veins, but the veins very distinct, strong, raised on both sides ; 

 midrib sulcate, compressed; texture coriaceous, very rigid; colour brown. 

 — Fertile frond oblong, 6 dm. long, IV2 dm. broad; pinnæ in 15 

 — 16 pairs, rather distant, 8 cm. long by 1 cm. broad, linear, obtuse or 

 rounded at the apex, truncate at the base; margins entire or subrepand, 

 slightly recurved. Sori numerous, rather small, often confluent; indusium 

 peltate, persistent; texture very rigid; upper surface of the pinnæ scalp- 

 turate by the raised veins. 



Glaziou 12374. 



