CXXX. GENEBA OE EEEN3. 



§ 3 PttUlAEIEiE. 



185. PILULARIA, Linnceus, &en. Plmt. ed. 5, 1047. 



Spore-cases (ConceptaclesJ pedicellate, axillary or extra-axil- 

 lary, solitary, globose, coriaceous, two- four- celled, two- four- 

 Talved ; each cell containing bodies of two kinds : (1) antheridia^ 

 consisting of vesoicles filled with many minute granular spores ; 

 (2) oopJioridia, occupying the lower part of the cell, each contain- 

 ing a single large spore. 



Submersed aquatic plants, with long creeping filiform rhizomes, 

 producing the filiform leaves (? petioles), singly or in small 

 tufts at intervals. Spore-cases inserted on the rhizome along 

 with the tufts of leaves, or opposite to them. 



Ex. : P. globulifera, Idn. | P. minuta, Durieu. 



§ 4 Mabsile^. 

 186. MAESILBA, Idnnmus, &en. Plant. 799, (reduct.) 



Lemma, Jicsaieu ; Zaltjzakskia, INecTeer. 



Spore-cases (ConceptaclesJ pedicellate, solitary or several 

 together, inserted laterally on the petioles, or axillary on the 

 rhizomes at the base of the petioles, two-valved, containing 

 numerous obovate cell-like receptacles in two longitudinal series, 

 bearing bodies of two kinds ; (1) cmtheridia^ consisting of 

 numerous sessile one-celled vescicles, containing small globose 

 spores ; (2) oophoridia, ranged in a single series along the recep- 

 tacles, and consisting of oval pedicellate vescicles containing a 

 single large spore. 



Dwarf herbs, having a creeping rhizome and long-stalked 



leaves, growing at intervals, either singly or in small tufts, and 



consisting of about four cuueate-obovate leaflets placed crosswise 



at the petiole, the fructifications growing either from the rhizome 



at the axils of the leaves, or from the petiole of the leaf. 



Ex. : M. quadrifolia, Mn. I M. pubescens, Tenore, 



M. maeropus, Sook. M. vestita, Sk. and Gr. 



M. brasiliensls, Mm-ima. \ M. polyoarpa, Sk, and Cfr, 



