178 



SELAGINELLACEJE, 



A orroiip of some 200 or more species many of which are in culti- 

 vation, but none have any economic value so far as known to lis. 

 Capsules 1-celled, 2-valved, in the axils of the 

 terminal bracts, the smaller kind nearer the 

 apex, larger nearer the base of spike. Si^laginella. 



Capsules 1-celled, in axils of rush-like leaves, those 

 with large spores amongst outer leaves, 

 those with small spores amongst the inner 

 ones. IsoETES. 



SELAGIKELT.A, S^^ring. 



Leaves all of one kind, set all round the stem. 1 



Leaves of two kinds, a line of larger spreading 

 ones along each side, and two lines of 

 smaller ascending ones on upper surface. 

 Perennials. 2 



Leaves as in preceeding. Annuals, of thin texture. 

 1 Annual, sub-erect, leaves not awned. 



Not known to us, but said to occur in Natal. 

 1 Perennial, procumbent, leaves awned. 

 2 Stem not jointed, 2-3 inches long, sparingly 

 branched. 

 In damp places. Midlands. 

 2 Stem jointed, 6 to 12 inches or more long, much 



branched, Kraussjaxa, J-. Braun. 



In damp woods all over the Colony. 

 3 Stems 3 to 4 inches long, trailing, intermatted, 



sulcate on back and face. Mackenii, Baker. 



Banks of Tugela River. Not known to us. 



rui\fiLA, Sprivij. 

 RUPESTRlS, Spreugel. 

 DEPRESSA, a, Braun. 



IsOETES, Linn, 



A small rush-like plant, with bulbous crown, 

 numerous narrow, rush-like leaves 1 

 inches long. 



Not known to us, but collected near Gril 

 Hi^^ bv Dr. Rehmajm. 



and 

 to 4 



natalensis, Baker 



RfflZOCARPE^. 



A group of minute plants floating in water or growing in or near 



water, tliey have no economic value though the leaves of some species 



of Marsilia are eaten by cattle. 



Capsules in the axils of the leaves, of two kinds, 

 the large and round ones containing many- 

 minute spores, the smaller ovoid, witli one 

 large spore. Azolla, 



Sporangia of large and small spores, attached 

 together in groups by a mucilaginous cord, 

 and enclosed in a 2-valved stalked capsule. Marsilia. 



