PAM. 7, 8, 9. 23 



Several species are cultivated ;is: S. Braunii and S. Vogelii both erect; S. cuspid- 

 lU, tufted; S. uncinata, or R moss, creeping; S. hemaetodes with spreading, 



fern-like branches; etc.. Selaginella lepidophylla, Bird's-nest moss with bright green 

 stems crowded in rosettes, curling closely into a dull brown ball when dry, belongs 

 to the so-called "Resurrection-plants."' 



7. Isoetaceae, QuUlwori Family, 



Aquatic plants with a cluster of awlshaped leaves from a 

 short fleshy stem; "sporanges are sessile in the excavated 

 bases of the leaves, the sides more or less covered with a 

 fold of the inner side of the blades ("velum"); those of the 

 outer leaves contain megaspores, those of the inner contain 

 microspores. The only species found in lakes and clear 

 streams of middle Florida is : 



Isoetes flaccida, with leaves of about half a meter long; complete velum, oval 

 sporanges covered with flat tubercles and light-colored megaspores. 



h the genus Isoetes. Chapman's Flora unites the genus Azolla to form the 

 Hyiropterides or Water-fern Family. Small's Flora has the Azolla in the Salvinia 

 Family. 



Azolla Caroliniana; minute, reddish or green (according to the amount of sun- 

 light), moss-like, floating plants with pendent roots, pinnately branched stems cov- 

 ered with imbricated 2-lobed leaves; spores of two kinds. On still water. 



Spermatophyta. Gymnospermae. 

 8. Cycadaceae, Cycat Family, 



Shrubs or trees with clustered pinnate leaves and dioe- 

 cious flowers without perianth; flowers in small oblong 

 or cylindric cones, scales peltate spirally arranged; sterile 

 flowers consisting of 1-celled anthers, the fertile ones of 

 nearly sessile ovules; seeds nut-like; cotyledons 2. 



Low palm-like plants; leaves circinate in the bud, petioles often spiny, blades 

 pinnate, segments jointed to the rachis, - Zamia, Coontie or Comptie 



Z. Floridana, with leaf -segments 10-16 veined. In the flatwoods. 

 Z. pumila, with leaf-segments 10-28 veined. In the hammocks. 

 The Cycas revoluta (so-called Sago Palm) and Dion edule are cultivated speci. 



9. Pinaceae ^Coniferae), Pine Family. 



Evergreen monoecious trees with rigid needle-like 

 ; fruit a cone, formed by the accrescent scales of 

 the pistillate aments; seeds at the base of each scale, often 

 samara-like; cotyledons 2-16. 



Staminate aments at the I -s of the preceding year, 



anthers 2-celled; pistillate aments on the youn^ twi^s, co 

 maturing the scconl year; teed* with elongated fringe. - Pinus, Pirn 



