278 FERNS : BRITISH AND FOREIGN. 



leaves generally imbricate, distichous, jungermannia-like, of 

 two sizes ; the smaller stipulseform. Spomngia reniform, 

 vertically bivalved, sessile in the axis of the leaves, or on con- 

 tracted terminal spikes. Spores of two forms : in some, 

 pporangia (Antlieridangia) small and numerous; in others 

 (Oophoridangia), 3-4, large. 



A. Flant leafy on all sides. 



1. S. spinulosa, Spring. Lycopodinm selaginoides, Linn.; 



Sclih. Fit t. 165 ; Eng. Sot. 1. 1148.— Europe, Britain. 



2. S. uUginosa, Lab. Nov. Soil. 2, p. 104, t. 251, f. 2; Willd. 



Sp. PI. 5, p. 32. — Australia and Tasmania. 



B. Leaves distichous. 



§ 1. Plants surculose. 



f Stems decumbent, creeping. 



3. S. Apus, Spring. Monogr. p. 75. S. densa, Sort. Lycopo- 



dium Brasiliense, Padd. Fil. Bras. 82, t 1. — North 

 America and Brazil. 



4. S. Ludoviciana, A. Braun. Revise, No. 5. — Louisiana. 



5. S. Helvetica, Link ; Spring. Monogr. 2, p. 83. Lycopddium 



Helveticum, Linn. — Europe, Switzerland. 



6. S. denticulata, Link ; Spring. Monogr. 2, p. 82. Lyco- 



podium denticulatum, Linn. — Central Europe. 



7. S. delicatissima,A Braun. Revise, No. 8. S. microphylla. 



Spring. —Columbia. 



8. S. serpens, Spring. Monogr. 2, p. 102. Lycopodinm 



serpens, Desv. S. mutabalis, Sort. S. variabilis, 

 Sort. S. Jamaicensis, Sort. — Jamaica. 



0. S. uncinata, Spring. Monogr. 2, p. 109. S. cassia, Sort. — 

 China. 



10. S. hortensis, Metten. Fil. Sort. Lips. p. 128. S. denticu- 



lata, Sort. — South of Europe. j 



11. S. sarmentosa, A. Braun. S. patula, Spring. S. apo- 



thecia, Sort. — "West Indies. 



12. S. Pceppigiana, Spring.; Sooh. Fil.Exot. t. 56. — Tropical 



America.. 



