132 



secus vias prope Chupe prov. Yungas " (Orbigny in herb. 

 Montague). The much narrower leaves, toothed only toward the 

 apex, seem to mark this for a distinct species; but I have seen 

 no perianths, and dare not separate it. From P. Mapiriensis it 

 differs essentially in the alternate (not opposite) leaves. 



P. MACRIFOLIA, Tayl. var. Yungas, alt 4,000 ped. (No. 



3,05^) 



P. RUTILANS, Lindenb. Yungas, alt 6,000 ped (No. 3,047 



p.p). 



P. RUBESCENS, Lindenb. Yungas, alt. 4,000 ped (No, 3,018). 

 A few stems mixed with P. viininea, n. sp. 



R TENUIS, Lindenb. Yungas, 6,000 ped. (No. 3,060.) 

 P. BIDENS, Gottsch. Ann. Sc. Nat (1857). . Caules perpauci 

 sterilesque inter alias Plagiochilas visi. 



Plagiochila (§Spinulos^) gracilicaulis, n. sp. 



Dioica, tenuis, flaccida, virescens, caule bipollicari vage pau- 

 cirameo. Folia distantia, decurvo-subsecunda, basi utrinque 

 (antice praecipue) longe decurrentia, dimidiato-ovato-lanceolata, 

 apice truncato bidentata, dentibus triangularibus^ dentulo uno 

 alterove interdum sinu interposito, margine antico recurvo integer- 

 rimo vel sub apice i-2-denticulato, postico praslate sed laxe 

 recurvo (basi integerrima excepta) distanter et breviter spinoso- 

 dentato dentibus omnibus 10- 1 1, cellulae parvulse, pellucidae, 

 inferiores subelongatae, trigonis vix ullis. Flores ? terminales. 

 Bracteae 2, foliis majores, niagis spinoso-dentatae, antice dentes 

 paucos monstrantes, altera (interior) perianthio subcontigua, altera 

 dissita. Perianthia subemersa cupulato-campanulata, exalata, 

 ore compresso rotundato spinoso-ciliata. — ^Folia, 2,oX i.o, cellulae 

 tV; perianthia 2.8X1.8 



Hab. Yungas Boliviae; inter Plagiochilani Bolivianam (No. 



3,020) exemplaria pauca carpsi. 



Plagiochila (^Asplenioide^) alternans, Gottsche, Mex. 



Leverm. 63, t 7. var. ANGUSTIFOLIA, Spruce. 



Dioica, flavo-viridis, caulibus tripolUcaribus, assurgentibus, 

 simplicibus vel ramum unum alterumve proferentibus. Folia 

 magna, distiche explanata vel subconvexa, patentissima, late 

 semiovato-oblonga, rotundata, basi breviter late cuneata, mar- 

 gine antico supra medium, postico toto (basi excepta) crebre 

 minute spinuloso-denticulata, dentibus omnibus 25-30 ; cellulse 



mm 



f^ 



t 



7- - 





r 



