66 Taxaceae Taxus 



Gibson County in the State Catalogue was an error. 

 N. S. and Ont., southw. to Ga. and Mo. 



8. ISOETACEAE Underw. Quillwort Family 



1. ISOETES L. Quillwort 



[Pfeiffer. Monograph of the Isoetaceae. Ann. Missouri Bot. Gard. 9: 

 79-232. 8 pi. 1922.] 



1. Isoetes Engelmanni A. Br. Engelmann Quillwort. Map 58. 1 have 

 found this species in artificial ponds in hard, white clay soil in three 

 counties, and in low woods in similar soil but richer in humus in Harrison 

 County. The colony in Floyd County is on the east side of the road south 

 of Martinsburg in an old mill pond on the Philip McGuirk farm. It is 

 abundant here and of large size. 



Southern N. H. and Vt. to Ga., westw. to Mo. 



SPERMATOPHYTA. Seed Plants or Flowering Plants 



5. 1 TAXACEAE Lindl. Yew Family 



18. 1 TAXUS [Tourn.] L. Yew 



1. Taxus canadensis Marsh. Canada Yew. Map 59. This species is 

 local and is restricted to the sides of the steep slopes and cliffs along Sugar 

 Creek in Turkey Run State Park, Parke County, to like habitats along 

 Sugar Creek in the "Shades" in Montgomery County, and along Big Wal- 

 nut Creek about 3 miles northeast of Bainbridge, Putnam County. It is 

 usually found under hemlock. 



Newf. to Man., southw. to Va. and Iowa. 



6. PINACEAE Lindl. Pink Family 



Leaves linear, in bundles of 2, 3, 5 or more than 5. 



Leaves in bundles of 2, 3 or 5 22. Pints, p. 67. 



Leaves in bundles of more than 5 (single on new shoots) 24. Larix, p. 68. 



Leaves linear and solitary, or scalelike. 

 Leaves all linear. 



Blades obtuse 27. TSUGA, p. 68. 



Blades sharp-pointed. 



Leaves green on both sides, alternate 35. Taxodium. p. 69. 



Leaves glaucous beneath, opposite, or whorled 45. Juniperus. p. 70. 



Leaves all scalelike, or scalelike on fruiting branchlets and linear and sharp-pointed 

 on sterile branchlets or juvenile plants, usually green on both sides. 

 Spray of branchlets flat; leaves all scalelike, the dorsal and ventral ones differing 



from the lateral ones; fruit a cone of 8-12 imbricated but opposite scales 



42. Thuja, p. 69. 



Spray of branchlets not flat; leaves all scalelike or on most specimens some 



branchlets with linear and sharp-pointed leaves; fruit berrylike, bluish black, 



glaucous 45. Juniperus, p. 70. 



1 See paragraph 2 on page 14 of introduction. 



