Tennessee Flora. n 



L. obscurum L. Ground pine. Lycopodium dendroicfeum 

 Michx. Wolf Creek, Cocke County. Cranberry, on Doe 

 River. Cumberland Mts. 



L. complanatum L. Trailing Christmas-green. Over the 

 Cumberland Alts. 



SELAGINELLACE.E Underw. 

 SELAGINELLA Beauv. 



Selaginella tortipila R. Br. Dry rocks in Ocoee Valley. 

 July-October. 



S. apus Sprengel. Moist, shaded grounds ; often among 

 the grass. O. S. June-September. 



S. rupestris (L) Spreng. Dry rocks and gravellv hills. 

 O. S. 



ISOETACE.^ Underw. 



ISOETES L. 



*Isoetes Butleri immaculata Engelm. Cedar glades near La- 



vergne. West Nashville (" New Town "), near Nashville, 

 in miry grass plots. 



SPERMATOPHYTA. 

 GYMNOSPERMiE. 



PINACE^ Lindl. 

 PINUS L. 



Pinus Strobus L. White pine. Cumberland Mts. and prom- 

 inently the Alleghanies along the slopes of the highest ridges, 

 where it frequently constitutes two-thirds of the status of the 

 forest over extensive areas, reaching an altitude of from loo to 

 175 feet. It is a very clean and graceful tree. May. M. 



P. Virginiana Miller. P. inops Ait. Scrub pine. Rocky, 

 dry moimtain slopes. O. S. April, May. 



P. cchinata Miller. Yellow pine. Spruce pine. P. mitis 

 Michx. Formerly abundant, clading the lower ridges of the 

 valley of East Tennessee ; presently much reduced in num- 

 bers. May, June. 



P. pungens Michx. f. Table mountain pine. Frequent in 

 the Smoky Mt. range. Altitude from 40 to 80 feet. May. 



P. rigida Mill. Pitch pine. With the former, and of about 

 the same size. May. 



♦Dioecious, with a subglobose trunk, bright green, rather firm leaf, 

 sometimes as many as 60, 6 to 9 inches long; sporangium, without 

 spots; macrospores, 0.40-0.56 mm. diameter; microspores, 0.029-031 mm. 

 long, spinulose. 



