PTERIDOPHYTA, FERNS AND FERNLIKE PLANTS. 



BY 



G. MACLOSKIE. 

 (DETERMINATIONS BY LUCIEN M. UNDERWOOD.) 



Family i. OPHIOGLOSSACE.E. Adder's-tongue. 



More or less succulent plants consisting of a stem and leaf growing 

 from a fleshy root. Sporesacs without annulus, crowded in one or more 

 spikes or panicles, and opening by a transverse slit. 



CHIROGLOSSA Presl. (Section of Ophioglossum.} 

 Frond broad, to 30 cm., palmately lobed. Spikes with 2-ranked spore- 

 sacs, several on base of frond and stipe. 



C. PALMATA (Linn.). 

 Fig. in Engl. & Pr. i. 4. p. 478 B. 

 (W. Indies; Brazil; Bourbon I.); Patagonia. 



BOTRYCHIUM Swartz. 



Rootstocks fleshy, clustered. Frond pinnately parted. Fruit i-3-pin- 

 nate, with rows of sessile sporesacs. 



B. LUNARIA (L.) Sw. Moonwort. 



Frond pinnately divided into fan-shaped segments, 10 cm. high. 

 Fig. in Britt. & Br. i. p. 3 ; Eng. & Pr. i. 4, p. 457. 

 S. Patagon., by Hatcher, "a var., or possibly an undescribed species, 

 but the material insufficient." (L. M. Underwood.) 



Fam. 2. HYMENOPHYLLACEJE. Filmy-ferns. 



Membranaceous, small, with slender creeping rootstocks. Leaves much 

 divided. Sporesacs on marginal, usually elongated receptacles; with 

 horizontal ring, and opening apically. 



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