108 HEPATIC^. 



Description of Plate XXXIX. — Fig. 1-3. Plants natural 

 size. 4, Portion of stem x ?. 5, 6. Leaves and stipules x 24 

 (Husnot Hep. Gall. n. 45). 7. Leaf x 24 (Greenland, E. Brown). 

 8. Portion of leaf x 290 (Norway, S. 0. Lindberg). 9, 10. Bracts 

 X 14 (Balmoral, G. Stabler). 11. Bracteole x 24 (ditto). 12. 

 Perianth x 16 (ditto). 13. Cross-section of perianth x 16 

 (ditto). 14. Cilia from mouth of the perianth x 85 (ditto). 

 15. Perigonial bract x 24 (Newfoundland, Waghorne). 16. An- 

 theridium x 85 (ditto). 



Genus 11. TRICHOCOLEA {Diuu,\ Nees. 



Thricolea, Dum. Comm. Bot. p. 113 (1822). 



Tricholea, Dum. Syll. Jung. Eur. t. 1. f. 8 (1831). 



Trichocolea (Dum.), Nees Nat. Eur. Leberm. Ill, p. 98 et 101 (1838). 



Dioicous. Stems glaucous-green, conspicuous, pinnate com- 

 pound or decompound. Leaves laciniate almost to their base, 

 setaceo-multifid, succubous. Stipules multipartite. Involucre 

 terminal, or from the growth of innovations axillary. Perianth 

 when mature either free, naked and not incrassate, surrounded 

 only at the base or a little beyond by the abortive pistillidia and 

 the narrow ring of involucral scales. Or undergoing more com- 

 plete metamorphosis, in which the cortical layer of the tomentose 

 receptacle invests and becomes blended with it, so as to form a 

 cylindrical coriaceous hirsute involucre bearing at the apex the 

 abortive pistillidia. Calyptra wanting. Capsule oblong, cleft to 

 the base into 4 coriaceous valves. Pedicel bulbous at the base, 

 inserted deep within the receptacle. Elaters free, bispiral. An- 

 theridia large, axillary in the terminal leaves of separate stems. 



Trichocolea tomentella (^Ehrh.), Bum. 



Lichenastrum Jilicmum 2ndchru7n villosum, Dill. Hist. muse. t. 73, f. 35 (1741). 

 Jungermania tomentella, Ehrh. Beitr. 2, p. 150 (1785); Hook. Brit. Jung. t. 36 



(1816). 

 Tricholea tomentella, Dum. Com. p. 113 (1<S22). 

 Trichocolea (Dum.) Nees Nat. Eur. Leberm. iii. p. 103 (1838). 



Dioicous, loosely ca3spitose, large, of a white or yellowish- 

 green colour. Stems roundish, firm, pale yellowish-green, com- 



