12 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 8l 



BRYUM SQUARRULOSUM (Card.) Ther. 



Brachymenhim sqnarrulosum Card. Rev. Bryol. 38:7, 31. 1911. 



(Fig. 4) 



I have this moss under two different names in my collections : 

 Brachyineniuin squarrulosum Card., Barnes & Land 486, Pringle 

 10580 in part, 15213; Bryum suhchryscum Broth. & Par. in sched. 

 (comm. Paris), Bro. Arsene. Although these names belong to differ- 

 ent genera, the two plants are certainly identical. 



I found this same species, abundantly and well fruited, in Brother 

 Arsene's collection ( see below) . The capsules have an inner peristome 

 made up of a basal membrane half the height of the teeth, the seg- 



FiG. 4. — Bryum squarrulosum (Card.) Ther. i, 2, 3, stem leaves; 4, peri- 

 chaetial leaf ; 5, leaf from the innovation ; 6, median cells ; 7, marginal cells ; 

 8, basal areolation ; 9, moist capsule. 



ments widely split, oblong-lanceolate, equal to the teeth and provided 

 with appendiculate cilia. The peristome of Barnes & Land 486 is in 

 every way similar. This moss, which has the habit, leaves, and areola- 

 tion of a Brachymeniiiin, belongs, then, by its capsule, to the genus 

 Bryum. It has a close affinity with Bryum chryseum Mitt., the same 

 facies, size, and leaves. But the two species are essentially different 

 in their sporophyte: B. squarrulosum has a short, thick, claviform 

 capsule, and B. chryseum has an elongate, narrow capsule insensibly 

 attenuate into a neck of the same length. 



The name proposed by Brotherus and Paris was happily chosen, 

 but it remains a nomcn nudum; the one given by Cardot is the 

 valid one. 



