ON CAUFORNIAN MOSSES. 13 



mcdio instruetis ; arcolatione laxiori, cellulis angustia pellueidis, alaribus paruin numcrosis distinctis ovato-quadratis 

 pcllucidis ; Pcrichretialibus e basi lata vaginantibus pellucide laxe elongate reticulatis subito fere in acumine 

 flexuoso vcl subreflcxo attenuatis obsolete nervosis ; Theca in pedunculo brevi semipollioari rugoso sanguinco, 

 gibboso-ovali ; annulo lato composite revolubili, operculo conico-acuto brevi ; peristomii intern! dentibus hyantibus, 

 ciliis binis gracillimis soparatis. 



Ab Hypno Sullivantii Spruce, proximo diffurt : areolatione foliorum laxiore; cellulis alaribus majoribus 

 quadratis distinctis: foliis margine planis; annulo latiori revolubili; operculo conico brevi, &c. 



On the ground in the shade ofOreodaphne California a. April. 



72. HYPNUM (SCLEROPODIUM) illecobrura Piryol. Ear. 



On rocks and on the ground, San Francisco, Oakland. 



73. HYPNUM (SCLEROPODIUM) caespitosum BryoL Eur. 



On the ground among shrubs, &c., near San Francisco. 



74. HYPNUM (SCLEROPODIUM) Californicum Spec. nov. Dioicurn, laxe intricato-csespitosum. Caule 

 scrpente vage ramoso ; ramis longioribus filiformibus radicantibus ; foliis laxe imbricatis apertis, ovato-lanceolatis 

 acuminatis concavis integris vcl vix serrulatis, nervo valido sub acumine cvanido instruetis ; areolatione angustata 

 clongata, cellulis alaribus numerosis, ovato-quadratis distinetis plus minusve granulosis ; Perichsetialibus late 

 ovato-ampleetentibus supernc lanceolatis longe piiiformi acuminatis, internis erectis, extcrnis acumine reflexis; 

 capsula in pedicello elongato gracili torto superne tantum papilloso rubello, inferne strainineo lasvi, ovata-cylindriea 

 brevi, pallide viridi cernua sub ore subconstricta, vacua erecta equal! ; late composite annulata; Opcreulo pallido 

 conico acutiusculo lato ; Peristomii externi dentibus sanguineis, interni ciliis luteis pertusis, ciliolis singulis vel 

 binis robustis articulatis separatis. Florae uiasculae antheridiis robustis numerosis paraphysatis ; foliis perigoniali- 

 bus late-ovatis brevi-acuminatis integris. 



On rocks and dry sand near the Bay of San Francisco. 



75. HYPNUM (CAMPTOTIIECIUM) arenarium Spec. nov. Dioicum, laxe lateque caDspitosum. Caule in- 

 tricato suberecto parcc vagcque ramoso ; ramis seeundariis ve*I brevibus erectis subcurvatis utrinque attenuatis, 

 vel longioribus filiformibus radicantibus. Foliis confertis undique imbricatis erectis subappressis, lanceolatis acu- 

 minatis striatis, margine reflexo subserrulatis. plicaturfe marginalis basi utrinque cavis, nervo valido sub acumine 

 evanido instruetis, dense anguste areolatis, cellulis alaribus numerosis basim integram folii efficientibus, ovato- 

 rotundatis minimis vix distinctis ; Perichsetii elongati foliis externis brevioribus late-ovato acuminatis reflexis, 

 superioribus amplectentibus subito in acumine piiiformi erecto vel reflexo serrulato terminatis, margine superne 

 eroso parce grosse dentatis, areolatione laxa basi quadrata polygona superne elongata pellucida ; Foliis perigoniali- 

 bus brevibus late-ovatis brevi acuminatis vel acutis integris nervosis, areolatione pellucida ; Capsula in pedicello 

 elongato gracili basi papilloso rugoso superne sublaevi, parva ovato-cylindrica cernua; Operculo magno conico obtuso 

 apiculato; Processus interni ciliis pertusis, ciliolis binis vel singulis brevibus fugacissimis separatis; Annulo com- 

 posite lato pcrsistente. 



Ab Hypno lutetcenlt Iledic. cui proxiiuum, primo intuitu forma graciliori, capsula cernua brevi, &c., diflert. 



Covering sand around bushes near San Francisco. 



70. HYPNUM Nut tall i i Wills. Bryol. Brit. 

 Leskea Culifornica Hampe. Pamphlet, 1860. 



This finespecies is a true Camptothecium related to Camptothecium aureum 



