14 ]\'urd fyw.ies of Oycadeoidea, from Maryland. 



science is indebted for the greater part of all that is known of the flora of 

 these deposits. 



Cycadeoidea Goucheriana n. sp. 



Trunk large, cylindrico-conical with elliptical cross section, 30 to 50 

 centimeters high, 25 to 50 centimeters in diameter, light colored and of 

 low specific gravity, somewhat chalky and friable; lower leaves some 

 what deflexed, upper ones ascending, the line between the two definite 

 and encircling the trunk near the middle ; leaf scars arranged in two sets 

 of spiral rows, both having nearly the same angle to the axis, 45 or 

 greater; scars variable in size and shape, chiefly subrhombic to nearly 

 triangular with curved or fluted sides, inner wall of the tubes marked 

 by a raised line around it; scars averaging 11 millimeters in vertical and 

 23 millimeters in lateral measurement; leaf bases usually absent or only 

 adhering to the bottom of the scars ; ramentum walls thick, more or less 

 divided into irregular laminae or scales with fissures between them, their 

 outer edges ragged ; reproductive organs numerous, well marked, irregu 

 larly scattered over the surface, most abundant at the narrower sides, 

 usually cavitous in the center, sometimes solid and protruding, surrounded 

 by concentrically arranged crescent-shaped bract scars, sometimes well 

 exposed and clearly distinguishable into spadix and involucre, the scales 

 of the latter imbricated, the entire organ conical with the apex toward 

 the axis of the trunk : armor 3 to 5 centimeters thick, separated from the 

 wood by a definite line ; woody zone 4 centimeters thick, consisting of an 

 outer parenchymatous ring 3 centimeters thick, a thin ring of loose open 

 structure, and two thin plates separated by another ring of coarse cells 

 divided by radial partitions, the inner walls of both plates marked with 

 the scars of the medullary rays, the pattern different in the two cases, the 

 scars on the inner plate 13 millimeters long, those on the outer longer 

 and tapering upward; medulla large, elliptical, tapering upward, of a 

 coarse, homogeneous structure. 



Only one specimen referable to this species has thus far been brought 

 to light, but this is one of the most perfect and also one of the most beau 

 tiful of all that have been discovered in the Iron Ore beds. It is further 

 of special interest from the circumstance that its exact stratigraphical and 

 local position when found is so thoroughly vouched for that there is little 

 room for doubt in the matter. It is with great pleasure that I name it in 

 honor of Dr. John F. Goucher, president of the Woman's College of Balti 

 more, to whose liberal and munificent policy the entire collection is due. 



Cycadeoidea Uhleri n. sp. 



Trunks small, 28 centimeters high, 20 centimeters in diameter, 50 to 60 

 centimeters in girth at the thickest part, circular, or only slightly ellip 

 tical in cross section, conical or somewhat cylindrical-conical in shape, 

 contracted at the base, silicified, but porous and light, reddish or gray in 

 color ; leaf scars definitely arranged in quincunx order and spiral rows 



