> 



117 



\ 



^ 



f-. 



^ ^ 



Mexico to Bolivia, and M 



me the same, gathered by Mr. Hyde in Costa Rica, I never met 

 with it in so much of the intervening space as I traversed. 



In contrast with the abundance and variety of the PIagiochil?e 

 Grandifoha^ in the Ouitenian Andes is their paucity in BoHvLa, 

 only two species being clearly distinguishable. Yet one of these, 

 P. Notarisii, notable for its large, flattish, semi-cordate, pauci* 

 dentate leaves, seen by me in small quantity only in the valley 

 of the Pastasa, has been gathered abundantly by Dr. Rusby. 



Of the numerous species of the .section Cristata^ I gathered 



in Amazonian and Andine forests Dr. Rusby 's collection includes 



not one; but it has two other species, quite distinct from any of 



mine, whereof one had been previously discovered in Bolivia by 



d'Orbigny. The other (P. Boliviaiia, n. sp.), which I suppose 



to be new, comes very near the P. ptinctiialis, G., found by 

 Liebman in Mexico. 



LopJiocolecE^ with a single exception, are exceedingly rare. 

 Of the sections Bidentat^e and Bicornuta^, so abundant in equa- 

 torial forests, fragments only of one, or possibly two species have 

 been seen. But one other species, notable for its oblong-hcxa- 

 ^ gonal leaves, with a ciliiform tooth at each of the four free angles 



(whence my name, Z. ^.-dentala, n. sp.) must have abounded, 

 for it exists intermixed with nearly every other hepatic. 



Oi Jungermmiia there is only a single species, but it is new 

 and very interesting. In the long sub-simple stems and the 

 laterally accumbent roseate foliage, it might seem a slender form 

 of y; colorata, from which it differs essentially in the opposite (not 

 alternate) leaves, scarcely at all decurrent at the base. Unfor- 

 tunately I found no perianths, though I sought for them sedulously. 



The remaining genera arc for the most part sparingly repre- 



sented. There is one example of the anomalous genus Notero- 

 clada {N, arJiiza, n. sp.) — anomalous also as a species, from be- 

 ing almost utterly rootless^ whereas its congeners have of all 

 leafy hepatica^ the longest and strongest radicles. 



There are luxuriant specimens, botli cf and ^ , oi Majxhantia 

 chowpoda, L.; and Dumortitra hirsuta, N., vindicates its claim 

 to be a cosmopolite by appearing in very nearly the same form 

 as the Irish variety {D. irrigua^ Tayl.). 



