APPENDIX. 357 



nally, vertically, from base to middle, collected in whorls, 

 with crestlike appendages, and stalked, arranged distich- 

 ously on an elongated spike. 



Order 4. HYMENOPHYLLE^E. Sporanges attached 

 to a common stalk, prolonged from end of vein of leaf, 

 and contained in a kind of cup formed by a lobe of leaf 

 above and indusial lobe from lower surface of leaf. 

 Obliquely transverse annulus. 



Gen. 1. Trichomanes. Sporanges sessile around base of 

 an exserted filiform column projecting from margin of 

 leaf, surrounded by a cup shaped indusium continuous 

 with leaf. 



Gen. 2. Hyme.nophyllum. Sporanges sessile up to sum- 

 mit of a column projecting from the margin of the leaf, 

 sub-elevated, but not exserted beyond the indusium, which 

 is two-valved. 



Gen. 8. Loxsoma. Sporanges stalked, inserted up to 

 summit of a sub-elevated exserted column in margin of 

 leaf, surrounded by an indusium, with truncated mouth, 

 entire. 



MICROSCOPIC FUNGI. 



Order COKIOMYCETES. The mycelium may be short 

 filaments converted into spores, or a flocculeut patch in 

 decaying matter or under the epiderm of plants, or more 

 completely organized into hollow conceptacles containing 

 spore-bearing filaments. 



Family I. SPHJERONEMEI. Conceptacles rising from mi- 

 croscopic mycelia growing beneath the epidermis of leaves, 

 stems, etc., containing a chamber lined by a perithecium 

 bearing single, often septate spores, and bursting by a pore 

 at the summit. 



Gen. 1. Coniothyrium. Conceptacle free, membranous, 

 opening by an irregular pore at the summit. Spores 

 globular. 



