REPORT ON THE EOTANY OE JUAN FERNANDEZ AND MASAEUERA. 8 1 



anomalum (Schwagr., t. 278, Rhacopilum), has its leaves undulate at the margin, and, 

 like some others of the genus, revives in water with difficulty. There are several unde- 

 scribed species of this genus from Chili. 1 



Porotrichum (Thamnium) confertum, Mitt., n. sp. 



Frons e ramis crassis densifoliis confertus ; folia imbricata, patentia, ovata, acuta, nervo 

 infra apicem evanido, margine in ramea apice denticulata, celullis minutis oblongis densis. 



Juan Fernandez. — A few stems all barren — Moseley. 



Considerably different from Porotrichum fasciculatum in its branches not having the 

 foliage compressed ; indeed, the whole look of the specimens is that of a greatly enlarged 

 Isothedum myurum. 



Porotrichum latinerve, Mitt., n. sp. 



Folia in frondis medio erecto-patentia, subcompressa, lanceolata, apice latiuscule acuta, 

 nervo lato ad apicem producto, margine subintegerrima ; ramea apice serrulata, nervo dorso 

 dentato, cellulis parvis oblongis obscuriusculis areolata. 



1 Pterygophyllum fragile, Mitt., n. sp. — Caulis erectus ? apice arcuato-decurvus, simplex ; folia lateralis patenti- 

 divergentia, obovato-spathulata, obtusa, ultra medium erasse nervata, margine dentibus approximatis ciliata, 

 media intermediaque orbiculate ovata, e cellulis hexagonis areolata, fragilia, perichastialia parva, erecta, ovata, 

 acuminata, convoluta ; theca in pedunculo elongato fusco oblonga, demum pendula, operculo rostrato, calyptra 

 basi plurifida. 



Caulis? 2-3 cm. altus, simplex vel rarius divisus. Folia lateralia 3 mm. longa, T25 mm. lata, pellucida, 

 fragillima, pallescentia. Pedvmculus, 2 cm. longus, fuscus. Theca 2 cm. longa. — South Chili, Spencer and 

 Reed. 



There is also another smaller species from the same country. 



Pterygophyllum sublimbatum, Mitt., n. sp. — Procumbcns ; folia, lateralia, divergentia, oblonga, obovata, apice 

 angulo lato acuta, ad medium nervata, media, intermediaque suborbiculata, omnia marginibus apicem versus 

 denticulis brevibus serrata, paulo intensius fuscata, sublimbata. 



Caulis? 2—3 cm. longus, flaccidus. Folia 2 mm. longa, fusca, nigrcscentia, cellulis parvis hexagonis areolata. 



Yolcan d'Osorno, South Chili. 



And a very different one from the Chonos Archipelago, gathered by Darwin, Pterygophyllum chonoticum, 

 Mitt., n. sp. 



Caulis? erectus, apice arcuato decurvus; folia lateralia patentia, oblongo-spathulata, obtusa, media, intermediaque 

 suborbiculata, omnia media tenue nervata, margine apicem versus dentibus ciliata. Caulis 3-5 cm. altus, simplex 

 vel innovationibus divisus. Folia lateralia 3 mm. longa, ubi latiora D50 mm. lata, pallida fulva fuscescentia ; 

 folia media intermediaque 2 mm. longa, T50 mm. lata. 



One of the most distinct of the genus, its spathulate lateral leaves giving it a similarity to some Gottsrhea, 

 which is increased by the fulvous colour. All the species of this group of mosses are but little known. Some 

 appear to grow in a procumbent manner, others erect, with the habit almost of a Milium. In some species there 

 are indications that the erect stems are really upright branches arising from a rhizome. The teeth of the peri- 

 stome have the structure common to the Hookerioe, the two external cells of which they are composed being 

 separated by an interval along the medial line of division, so that each tooth has externally two bands of coloured 

 cells resting on the. margins of the colourless internal band, which is conspicuous through the median line. 

 (bot. chall. exp. — part in. — 1884.) C 11 



