322 Rev, M. J. Berkeley on the Flora of Van Die men's Land. 



fusoria, chiefly Fragilarus and Meridian vernale. I have ob- 

 served sixteen different sorts of such siliceous infusoria, be- 

 longing to six genera ; besides these I have found three sorts 

 of infusoria with membranous shields, and dried specimens of 

 AnguWula fluviatilis. 



Thus the silica is quite explained, as well as a part of the 

 iron, of which last another part, as also the manganese, may 

 arise from a little dust which lies in irregular particles with the 

 infusoria among the confervas. I have treated more circum- 

 stantially, before the Academy of Sciences, of the meteoric pa- 

 per of 1686, which I found to be similar to this in composi- 

 tion. 



XXXIX. — Contributions towards a Flora of Van Diemerts 

 Land; from collections sent by R. W. Lawrence and 

 Ronald Gunn, Esqrs., to Sir W. J. Hooker. By the Rev. 

 M. J. Berkeley, M.A., F.L.S. 



(A sequel to Sir W. J. Hooker's Paper ; Journal of Botany, p. 258.) 



[With a Plate.] 



Fungi. 



1. Lentinus villosus, Kl. in Linn. Found also in Mauritius. 



2. Favolus pusillus, Fr., Linn. vol. v. p. 511. tab. xi. fig. 2. 

 var. pallidus, Nob. Minute, not \ an inch broad. Pileus 

 horizontal, reniform, smooth, of a tough fleshy substance, 

 brittle when dry, ochraceous, furnished with a short lateral 

 cylindrical stem of the same colour as the pileus. Hymenium 

 pale. Alveoli at length elongated, flexuous ; gills vein-like ; 

 their edges pruinose. 



On bark. This pretty fungus accords exactly with that 

 brought by Beyrich from Brazil, except in being paler in every 

 part. Montagne refers to the same species Boletus papulatus, 

 Bertero, MSS. n. 1680, gathered in Juan Fernandez, May, 

 1830, but I am inclined to think that it is quite distinct and 

 may therefore bear the name of Favolus papidatus, Kl., in 

 Hook. Herb. The alveoli, as Montagne remarks, are rounder; 

 they are besides 4 — 6-sided, and much more distinct. The 

 whole plant when fresh is apparently white and of a softer 

 texture. In the dry state it is minutely pruinose. It may be 

 thus characterized: — 



