364 
ST. HELENA. 
This small species resembles in general appearance the South 
African S. Irachycarpum, Hampe Icon. Muse. 11, but in the present 
the leaves are a little narrower. 
929. *S. plumularium, sp. nov. — Monoicum. Caulis gracilis 
rufus procumbens. Folia undique aequalia patentia plumosa, lanceo- 
lata attermato-acuminata caviuscula integerrima, cellulis angustis 
alaiibus distinctis ful vis, areolata perichastialia erecta interna parum 
latiora. Theca in pedunculo rubro ovalis inclinata. — On bark, 
Melliss. 
I he long slender stems with the narrower and plumose foliage 
give tins moss a different appearance from the preceding, but it may 
be only a form, distinguishable because no intermediate states have 
been collected. Very closely allied species, or forms of one widely 
spread species, are found in Mauritius. 
Pleurozium, Sullivant. Musci of the United States, p. 68. 
980. P. splendens, Hedwig [Hypnmi).— Dr. Hooker. Probably 
indigenous to St. Helena. 
Small fragments only have been seen of this Moss ; they were 
gathered, intermixed with the Plagiochila cmisodonta of Dr. Taylor, 
dhe species has not been reported from S. America, but it is found 
in the Canaries. 
Ptychomnion, Hook. f. et Wils. 
931. fP. densifolium, Bridel. ii. 514,— Hab. Tristan d’Acunha, 
Aubert du Petit-Thouars. Milne. 
Hypnum, Dill. 
Sect. Argyrodinum, Mitten in Godman’s Hat. Hist, of the Azores. 
932. H. purum, Linn. — Probably indigenous to St. Helena 
Melliss. 
A bright straw-coloured Moss, growing amongst the grass on the 
high land at Eock Cottage, &c. Without fruit, but in all respects 
similar to the common European state of this species, which in some 
particulars differs from any of the numerous sections into which the 
Hypnci have been divided, and, at present, has no known very close 
ally. J 
