ANOMODON. 375 



1. Anomodon longifolius Hartm. (Pterigynandrum longi- 



folium Ahnf.) (Tab. L. H.). 



Very slender, secondary stems irregularly branched ; branches 

 often ftagelliiorm, fliform ; olive or yellowish green, in irregular, 

 intricate tufts ; leaves very small, lanceolate , gradually tapering 

 to a narrow acuminate point, spreading, loosely incumbent when 

 dry, not crowded, margin plane, minutely denticulate above, nerve 

 pellucid, ceasing below apex ; cells rounded-hexagonal, opaque, 

 highly papillose, very slightly enlarged at the base. Seta short, 

 capsule hardly raised above the branches, oblong-cylindric, small ; 

 annulus none ; peristome small. 



Hab. Rocks, etc. Very rare ; Scotland ; England. Fruit very rare, not 

 found in Britain. 



A more slender and delicate plant than the two following, with more tapering, 

 acute leaves. It bears some resemblance to the most slender forms of Leskea polycarfa; 

 but differs essentially in the opaque, highly papillose cells. 



2. Anomodon attenuatus Hiibn. (Hypnum attenuatum 



Schreb.) (Tab. L. I.). 



Intermediate between A. longifolius and A. viticulosus, and 

 somewhat resembling a miniature form of the latter ; irregularly 

 branched and intricate, the branches short and rather obtuse, or 

 elongated and flagelliform, 1-2 inches high ; leaves spreading or 

 secund, usually distinctly homomallous when dry, about y z line in 

 length, oblong-lanceolate from a widely oval base, acute and 

 minutely apiculate, at the insertion very narrow, excavate and 

 slightly decurrent ; margin plane, minutely crenulate with papillae, 

 at extreme apex usually with a few teeth ; nerve ceasing below 

 apex, pellucid; cells irregularly hexagonal, opaque, highly papillose, 

 thin-walled, a few at mid-base pellucid, elongate-rectangular. 

 Seta longer, about f -inch J capsule elevated above the branches ; 

 lid longly beaked; peristome larger than in the last. 



Hab. Rocks, etc. , in mountainous districts ; very rare. Ben Lawers ; Den of 

 Airlie. Fruit not found in Britain. 



The less tapering leaves distinguish this from the last species, and the small size 

 and usually denticulate leaves from the next. 



3. Anomodon viticulosus Hook. & Tayl. (Hypnum 



viticulosum L.) (Tab. L. J.). 



Secondary stems long, 2-4 inches, robust, slightly branched. 

 Plants bright green, dull green when dry, in large loose tufts. 



