CLASSIFICATION 
65 
ORDER II. SALVINIACEAE. Capsules free in the axils of the 
leaves, of two kinds, the larger round, containing 
numerous minute spores, the smaller ovoid, con- 
taining one large spore. 
(. Included in Order V., Rhizocarpeae in our first edition.) 
Genus 53. Azolla. A small floating Waterweed. 
ORDER III. MARSILIACEAE. Sporangia of large and small 
spores, both attached together in groups, which are 
fastened to a mucilaginous connecting cord, and 
enclosed in the two-valved stalked capsule, which 
ultimately opens. 
{Included in Rhizocarpeae in our first edition.) 
Genus 54. Marsilia. A semi-aquatic plant ; leaves often 
floating. 
Division II. Marattiales. 
ORDER IV. MARATTIACEAE. Capsules united in a double 
line into a concrete sorus ; sori on the back of 
ordinary pinnae; vernation circinate. 
Genus 55. Marattia. Characters as above. 
Division III. Ophioglossales. 
ORDER V. OPHIOGLOSSACEAE. Capsules without a ring, 
permanent, and united into a line on each side of 
the spike, which is separate from the barren pinna. 
Vernation erect. 
Genus 56. Ophioglossum. Characters as above. 
COHORT II. LYCOPODIALES. 
ORDER VI. LYCOPODIACEAE. Capsules uniform, reniform, 
one-celled, opening lengthways along the top. 
Spores uniform. Capsules placed singly in the 
axils of ordinary leaves or of bracts arranged in 
terminal spikes. 
Genus 57. Lycopodium. Characters as above. 
ORDER VII. SELAGINELLACEAE. Spores of two kinds, 
produced in separate sporangia which are placed 
in the axils of leaves or bracts. 
S. F. S. A. 
5 
