38 CRTPTOGAMIA. 



closely crowded on the upper half of the innovations, below scattered 

 and smaller, lanceolate acuminate, serrate from the middle upwards, 

 areolation loose elongated-hexagonal, costa subflexuous, vanishing 

 below the apex ; perichaetial leaves longer and with a shorter costa. 

 Capsule oval-cylindrical, straight or arcuate, cernuous or pendulous ; 

 collum short, not tapering into the rather long and rlexuous pedicel ; 

 annulus simple, large ; operculum short, conic ; teeth of the peristome 

 tender, linear, horizontal, remotely articulated ; spores large. Anthe- 

 ridia in the axils of the perichaetial leaves, or mixed with the arche- 

 gonia at the base of the vaginula. 



The small size of the whole plant, and its short oval-cylindrical 

 capsule with a broad short abrupt collum, distinguish this species from 

 its congeners. 



Plate 8. A. — Mielichhoferia Andina : four plants, of the natural 

 size. Fig. 1. A plant. 2, 3, 4, 5, 6. Leaves. 7, 8, 9. Cross sections of 

 leaves. 10. Leaf, showing the reticulation. 11, 12. Capsules, without 

 opercula. 13. Capsule, with operculum. 14. Peristome, with portion 

 of capsule wall. 15. Three teeth of peristome, with portion of annu- 

 lus, and spores. 16. A spore. 17. Vaginula, with archegonia and 

 antheridia. 18. Antheridium. — Analyses enlarged. 



Tribe 15. BARTRAMIEiE. 



1. BARTRAMIA, Hedw. 



1. Bartramia rigid a, Beds. & Not. 



Bartramia rigida, Bals. & Not. Pugil. 1 ; Bryol. Europ. 4 ; Bart. Monogr. p. 20, 

 t. 11. 



Hab. Base of Mauna Kea, Hawaii, Sandwich Islands. 



The specimens differ from the European only in their larger size. 

 The American representative of this species is B. radicalis, Beauv., 

 distinguished mainly by a more linear leaf, a longer and more slender 

 pedicel, and a smaller capsule. 



