384 Mi:SCr. UithutrUhnm. 



distinct, erect or sliglitly s})rea(linj? wlien dry; cilia 8, liuear-Iauceolate, nearly 

 eciualling the teeth. — lirncli Sc Schiiiip. IJryol. Kur. t. 217 ; Wilsuii, 1. c, t. 34. 



On rocks, Kv^ Tnr Grove ami Yosemite Valk-y {liolandcr) ; K. lliimlioldt Mountains, Nuvadii 

 (Jl'^utnon) ; Antic .\niciiia and iiioiuitiiins of Eiuo[)e. 



8. O. Bolanderi, 8ulliv. Stems densely leaiy, nearly an inch high, sj)aringly 

 branched Iroiu the base, dark green, cespitose : leaves recurved-spreading wlien 

 luoist, oblong-lanceolate, acutish, obscurely papillose, the areolation above of dense 

 bistromatic cells : luoncecious ; male flowers axillary : calyptra hairy : capsule on a 

 very short jiedicel, half emersed, oblong-oval, on a short colluni : teeth long, in 

 pairs, 18- 20-jointed, densely punctulate, yellowish; cilia 8, as hmg as the teeth. 

 — Icon. Muse. Suppl. G4, t. 46. 



On rocks, JJolandcr. 



9. O. speciosum, Nees. Stems tall (1 or 2 inches), loosely cespitose, green or 

 yellowish gieeu : leaves more or less spreading, long-lanceolate, acuminate, carinate, 

 the margins revolute : male llowers axillary : calyptra ovate-campanulate, very 

 hairy : capsule emergent and exserted, cylindric-oblong upon a short collura, i)ale 

 yellow, smooth, at length obsoletely 8-plicate : teeth in pairs, yellowish, refiexed 

 when dry, densely papilhjse, e([ualling the 8 cilia. — IJruch & Schimp. 1. c, t. 217 ; 

 Wilson, 1. c, t. 34. 0. tlejans, Schwaegr. 



On trees and rocks, Rig Trees and elsewhere {BoUindo); Fort Colville and Biitish C'ohunljia 

 (Lytill) ; St. Lawrence Iliver, and European. Very varialjlc. 



10. O. alpestre, llornsch. More or less densely cespito.se, and from deep 

 green to yellowish or brownish : leaves long-lanceolate, with revolute margins, 

 papillose and minutely crenulate above : male flowers terminal : calyptra nearly 

 naked, covering two-thirds of the ca|)sule, straw-colored with brown ajjcx : capsule 

 emergent, oval with short collum, jiale yellow, striate, when dry urceolate and 

 broadly ribbed: teeth ct)nnate in pairs, rellexed when dry, e<pialling the 8 cilia.- — 

 Eruch & Schimp. 1. c, t. 213; SuUiv. Icon. Muse. Sui.pl. G"J, t. 51. (/. occidrntale, 

 James, IJot. King Exp. 402. 



Monte Diablo (Gibbous); Wahsatcli and Uinta Mountains {Wiitsnn) ; Rocky Mountains of 

 British America {Drununoinl) ; Central Kuropc. Tlic specimens ditrer from the normal form in 

 tiieir glaucous-j^n-en color, tlie broader thick leaves with elongated simple or forked iiajiilia', and 

 the longer entire tietli minutely punctate. 



11. O. rivulare, Turner. Stems lax, tufted, elongated, often floating, branched 

 above, naked at base : leaves dark green or blackish, oblung-ovate to ligulate, obtu.se, 

 spreading, smooth, with revolute margin : male flowers terminal : calyptra naked, 

 pale- or dark-green, blackish above, covering half of the capsule: capsule half 

 immersed, pyriform, yellow, obscurely 8-striate, urceolate and ribbed the whole 

 length when <lry : teeth orange, in pairs, at length sonu'.what si'parated, rellexeil 

 when dry; cilia 8 longer- ami 8 shorter than the teetli. — Muse, llib, UG, t. 8; 

 Bruch & Schimp. 1. c, t. 219 ; Wilson, 1. c, t. 21. 



On roots of trees, etc., in water, AnibM^on Valley, eonnnon, Bulnnder ; Euroju'. 



12. O. cylindrocarpum, Lesq. Stems simple or si)aringly branched, slender, 

 2 to 4 lines long, densrly leafy, in loose dull green tufts blackish below : leaves 

 erect, appressed when dry, long-lanceolate, acutish or subo])tuse, carinate, the stout 

 nerve ceasing below the apex, margins revolute, minutely papillose above : flowers 

 monoecious, the male rarely axillary : calyptra very hairy, nearly covering the 

 cajisule : capsule exserted, cylindric or narrowly oval, pale green or yellowish, 

 obscurely 8-striate, very iiarrowly 8-ribbed when diy : teeth apprnximate in jiairs, 

 9 - 10-jointed, granulo.se, rellexed when dry, ecpialliug tin; 8 stout cilia. — 'I'raus. 

 Amer. Phil. Soc. xiii. G, and Mem. Calif Acad. i. 17 ; Sulliv. 1. c. 70, t. r>2 ; SuUiv. 

 &, Les(]. 1. c. 2 eil. n. 178. 0. Coiilltri, Mitten, Journ. Linn. Soc. viii. 25. 



On rocks and bark of oak-trees, Dardanelles Canon {/loldiiihr) ; also by Coulter. 



