374 THE MOSSES OF LORD HOWE TSLAN^D^ 



B, LEPTOTHECiUM Tayl. 

 Many parts of the Island, sometimes typical, but mostly in 

 various forms, including "forma foliis acuminatis argute serratis." 

 (at back of Gower Wilson's, plentiful). 



B. (Rosulata) leptothecioides Broth, et Watts, sp.nov. 



Dioicum; gracilescens, csespitosum, c?espitibus densis, viridibus, 

 nitidiusculis; caulis erectus, cum innovationibus 5-7 mm. longus, 

 fusco-tomentosus, dense comoso-foliosus, innovando-ramosus: 

 folia sicca plus minusve distincte spiraliter contorta, humida 

 erecto-patentia, carinato-concava, comalia e basi breviter et late 

 spatlmlata ovalia, acutiuscula, aristata, marginibusferead apicem 

 anguste revolutis, apice minute serrulatis, limbata, nervo crassi- 

 usculo, superne sensim tenuiore, in aristam elongatam, strictam, 

 integram excedente, cellulis laxis, oblongo-hexagonis, in medio 

 folii 0-05-0-06 mm. longis et c. 0*015 mm. latis, basilaribus sub- 

 rectangularibus, marginalibus elongatis, angustis, limbum lute- 

 scentem, 2-3 seriatum efformantibus; seta usque ad 3 cm. alta, 

 rubra; theca subnutans e collo sporangio sequante oblonga, macro- 

 stoma, fusca. 



Rocks by sliprails south of Robins' farm (n.lOO); gully south 

 of King's, base of Mt. Lidgbird (n.l51, 152, 162, 176, 180); Blen- 

 kenthorp's Beach (n.489, 526); Northern Hills (n.235a, 284a); 

 rock and soil back of (J ower Wilson's (n. 66); North Head (n. 491, 

 494, 506a). 



Species habitu formis minoribus Br. leptothecio similis, sed 

 foliis nervo longe excedente cellulisque laxis optime diversa. 



Rhodobryum. 

 R. LEDCACANTHUM Hampe. 

 North Head; gully south of King's; Mt. Gower. 



LEPTOSTOMACEiE. 

 Leptostomum R.Br. 

 L. MACROCARPUM (Hedw.) R.Br. 

 Eastern face of Mt, Lidgbird; Saddle Back; Mt. Gower. 



