404 ADELANTHUS. 
secunda, margine antico incurvo subintegerrimo, postico subplano 
sepissime spinuloso-dentato ; cellule majuscule—minutule, guttu- 
late, pachydermes, trigonis angularibus conspicuis, inferiores 
median ceteris 2-5plo longiores, discolores, in vittam dispositz, 
marginales minute opacule. ol/ola nulla vel perrara et minuta. 
Flores dioici, utriusque sexus cladogeni, postici. Bractee 2 tris- 
tichee, intima foliis subminores, apice bifide vel varie incise. 
Pistillidia 12-15. Pertanthia pyriformia fusiformiave, turgida, 
3-5-angula, ore denticulato. Calyptra paulo minor, carnosa, infra 
medium 3—6-strata, ibidemque pistillidiis sterilibus obsita. Capsula 
ovalis, 4-valvis, bistrata, czeteraque eadem fere ac in Cephalozia. 
Andrecia amentiformia; antheridia solitaria, rarissime bina. 
Hab. ad rupes umbrosas et arborum truncos vetustos prostratosve. 
Distr. Pauce species adhuc cognite in montibus tropicis, necnon 
in terris subantarcticis vigent ; unica Britannica, A. decipiens (Hook.) 
etiam in Antillis et in Andibus Quitensibus inventa est. 
Plagiochila Dum., habitu et foliis decurvis spinosis simillima, revera 
distinctissima foliis basi antica constanter recurvis (nec incurvis) ; 
perianthiis alatere compressis, macrostomis, bilabiatis ; pistillidiisabortivis 
a calyptra liberis, &e.—Cephalozia subg. Odontoschisma, magis aftinis, 
distat foliis assurgentibus (nec decurvis) pro more integerrimis; perianthiis 
constanter angustis et trigono-prismaticis ; calyptra parva, tenui, solum 
in ipsa basi pistillidiifera, &c. 
§ 1. Folia integerrima. 
1. A. Crossit. F. subrotunda, evittata, antice longe decurrentia. Br. 
apice integre vel 2-3-lobe et subciliate, cum bracteola ovata bifida 
ciliata connate. 
§ 2. Folia apice margineque postico spinulosa. 
bo 
A. decipiens. uride viridis. F. oblique orbiculata, antice longe 
decurrentia, basi obscure vittata, margine spinis paucis (1-3) armata. 
sr. foliis subminores, bifidee subintegerrime. Per. pyriformia 
turgida superne obtuse 3-5-gona. Cal. 3-strata. 
3. A. decurvus. Albicans. F. oblique ovato-rotunda brevissime decur- 
rentia, apice et margine postico argute spinuloso-dentata (dentibus 
15-20). Br. foliis zquales, apice varie lobatz et ciliate. Per ovato- 
fusiformia, obtuse 3-5-carinata. Cal. 4-strata. 
1, ADELANTHUS CrossII, Spruce. 
Hab. In Andibus prope Popayan, in rivuli arena, cum muscis, legit cl. 
tob. Cross, a. 1877. 
F 2:0 x 15,¢ gy-dg; br 1:0 x -9™™ (et latiores). 
Caudex repens brevis radicellifer subaphyllus, caules (plerumque soli- 
tarios) suberectos pollicares apice subuncinatos proferens. Stolones 
