127 



P 



is an entirely different plant, viz. the R. ranmlina, Tayl., which 

 stands next to the Irish R, voluta, Tayi. Dr. Rusby gathered the 

 true R. Xalapensis at Yungas (alt. 6,000 ft.), No. 3,034, and R. 

 ramiilina occurs sparingly in several packets of his collection, 

 mixed mainly \v\t\\ Plagiochilce ; but his R, Xalapensis xs^zzom- 

 panied by a new and very distinct species of the same genus {^R, 

 clavidata, Ms.) which has the rare pecuHarlty of a monoicous 

 (autoicous) inflorescence, the great mass of the genus consisting 

 of purely dioicous species. 



R. FALLENS, Sw. var. Yungas, etc., (cum Nos. 3,063, 3,009, 

 3086, mixta). 



R. Amazonica, Spruce Hep. A. et A. Inter Plagiochilas 



rarius reptans. (No. 3,055, etc.) — Specimina speciei affinis, nimis 



juvenilia et incompleta, adsuntsub No. 3,052. 



Radula MAMMOSA, n. sp. 



Dioica, pusilla, flavens, arete repens, caule l-i J^-pollicari, 

 r " laxe bipinnato, ramis subinde dichotomis. Folia subimbricata, 



i supra lobulum divcrgentia, falcato-oblcnga, rotundata, valide 



^ sinuato-complicata ; lobulus plus dupio brevior, subrhombeus, 



> valde saccatus et ex eo deorsum arcuatus vel fere in angulum 



^ abiens, mammillam praealtam obtuse conicam proferens, ad origi- 



nem superiorem baud auriculatus; cellular parvulx, opac^, trigo- 

 nis nullis. (Folia caulina inferiora interdum vix mammillifcra). 

 Flores 5 terminalescum innovatione, ssepedichotomiales. Bracteae 

 foliis minores, magis falcatas, lobulo angusto piano. Perianthia 

 alte exserta, foliis 4-5 plo longiora, stricta vel arcuantia, clavato- 

 tuba^formia, inferne teretia, ore compresso, truncato, obscure 

 laticrenato.' — Folia .8X.55 (ad lobuli apicem) X.8 (ad basin ipsum) 

 lobulus .3 (ad insertionem mensus), celluLx to ; perianthia 3.0-4.0 





^ 



mm 



* 



X-55 



Hab. Bolivia oriental! in Aa^ostichi frondibus cum Lcjejincis 

 repens. (No. 3,025 p.p). 



Radula clav.eflora, n, sp. 



Autoica, flavicans, i-i^ pollices longa, caule nisi in ipsa basi 

 a matrice libero subpinnatim ramosa. Folia subplana, subim- 

 bricata, late patentia, basi in caule utrinque alte incurrentia, semi- 

 cordato-oblonga, rotundata auricula basali caulem transetmte, 

 subrecte comphcata ; lobulus triplo fere brevior, subquadratus, ad 



carinam vix inflatam recte vel arcuatim decurrens, obtusus, mar- 

 gine supero carina subparallelo medio suiuato-inflexo, angulo 



