SUPPLEMENT.] 301 



TORTULACE^. 

 3. ACAULON MEDITEERANEUM 



Autoicous ; resembling A. muticum, but more slender, inner perich. 

 bract very large, convolute, entire. Caps, minutely apiculate, spores 

 nearly smooth. (T. XII,* I.) 



SYN. Acaulon mediterraneum LIMPR. in RABENH. krypt.-fl. von Deutschl. 4 Band, 180 (1886). 



Autoicous ; pale yellowish green, in caespitose patches ; plants 

 more slender and conical. Leaves short broad, entire, nerved to apex, 

 upper cells smaller, rhombic. Perich. bracts two, unequal, innermost 

 very large, oblong, convolute and enfolding the fruit, with a short flat 

 acute point, quite entire or with 2 3 short irregular teeth, nerved to 

 apex ; outer f as long, obovate, acute, the margins involute. Caps, 

 erect, reaching to middle of inner bract, globose, leptodermous, cas- 

 taneous, minutely apiculate ; spores nearly smooth. 



HAB. Top of a hedge-bank at Douglas, I. of Man. (Holt Oct. 1886) ! ! 



Although very close to A. minus, this little moss has a different aspect, 

 from the longer inner bract, completely wrapped round the fruit, and 

 narrowing upward, the plants also are somewhat glossy and curve to one 

 side and are taller than those of A . muticum. 



MOLLIA MICROSTOMA. 



Var. y. elata (Scliimp.) 



Elongated, densely tufted ; caps, minute, subglobose, not reaching the 

 tops of the innovations. 



Svx.Hymenostomum microstomum c. datum BR. SCH. Bry. eur. SCHIMP. Synops. 2 ed. 34. 

 HAB. Wet rocks. Janets cave, Malham (Holt 1885) ! ! Settle (Burgess 



1886) ! ! 



Sterile tufts i* in. high, apparently referable to this variety, though 

 it is difficult without fruit to distinguish from M. viridnla var. densifolia. 



TAB. XLV. 



A. Polytrichum gracile. B. Leucobryum minus (New Forest, Piffard). C. Trematodon 

 ambiguus (Tummel Bridge, Braithwaite). D. Blindia trichodes (Bolton, Schole -field) . 

 E. Oncophorus crenulatns (Loch Goil, Hunt). F. Dichodontium pellucidum var. strictum 

 (Abergavenny, Mitten). 



a. Fertile. c. sterile plant. i. leaf. laa. Areolation of apex. jab. Do. of base. 

 2. Perich. bracts. 3. male infl. 4. bract and antheridia. 5. capsule. 6. calyptra. 

 8. peristome. 10. annulus. 



