40 CRYPTOGAMIA. 



A small glaucous-green species, of which the Collection contains 

 only male and barren specimens. Stems erect, about 1 inch high, 

 matted together below by dark tomentose radicles, subdendroid, hav- 

 ing from near the summit numerous spreading branches 2-3 lines 

 long. Leaves of the main stems erect ovate-lanceolate, those of the 

 branches narrower spreading, both mucronate by the excurrent costa, 

 concave, subcarinate, strongly papillose on both sides, opaque, denticu- 

 late on the slightly recurved margins by protuberant oblong cellules, 

 which elsewhere are smaller and subqnadrate. Male flower terminal, 

 discoid ; perigonial leaves with a costa ceasing below the obtuse and 

 dentate apex; antheridia numerous, shorter than the clavate para- 

 physes. 



Clearly different from Glyphocarpa pusilla, Hook. fil. & Wils., to 

 which it is referred by Muller, Synop. Muse. 2, p. 616. Q. pusilla is 

 described (Lond. Jour. Bot. 1844, p. 545) as " being exceedingly mi- 

 nute, the whole plant not two lines in height, and with loosely reticu- 

 lated leaves." 



Barren stems of B. exigua very much resemble Eypnum Scabri- 

 folium, Hook. fil. & Wils., as figured in the Flora Antarctica, Tab. 60. 



Plate 8, B. — Bartramia exigua : one barren and two male plants, 

 of the natural size. Fig. 1. A male plant. 2, 3, 4. Stem leaves. 

 5, 6, 7. Branch leaves. 8, 9, 10. Perigonial leaves. 11, 12, 13. Cross 

 sections of branch leaves. 14. Upper part of a branch leaf, showing 

 the reticulation. 15,16. Cellules of same. 17. Portion of a branch. 

 18, 19. Antheridium and paraphyses. — Details enlarged. 



5. Bartramia setifolia, Hook. & Am. 



Gymnostomum setifolium, Hook. & Arn. in Hook. Icon. Plant, t. 135. 



Hab. Near Casa Cancha, Andes of Peru. 



The specimens vary in important particulars from the description 

 of Bartramia intertexta, Schimp., as given in Muller's Synop. Muse. 1, 

 p. 504, under which G. setifolium, H. & A., is cited as a synonym. 



