470 MESOZOIC FLORAS OF UNITED STATES. 



hut does not exactly matcli that tinink. It is 21 cm. high, 34 cm. in 

 jireater and 17 cm. in lesser diameter at the top, where it is thickest, 

 the sides being deeply pressed in below, so that it is only 1 1 cm. thick 

 at the transverse fracture. The maximum girth is 81 cm. The fracture 

 is even and the summit is perfect, showing a depression with a low 

 prominence in the center surrounded l)y polygonal scars concentrically 

 arranged. (Localit}-: PI. LXXX, No. 57.) 



Cyc.\deoide.\ Fisher^e Ward n. sp. 



PI. LXXXVII. Fijr. Ill, 0: PI. CV. 



Trunks rather small (about o() cm. high and 20 cm. in diameter), 

 conical, unl)ranched; rock soft, light l)ufi" colored, of low specific gravity; 

 leaf stalks strongly inclined, making an angle with tlie axis of the ti'unk 

 of nearly 45°; rows of scars verv distinct, spirally arranged around the 

 trunk, those from left to right making an angle with the vertical axis of 

 about 45°, those from right to left of about 30°, the latter much the more 

 obvious and curving upward, so that the angle varies from 45° below to 

 25° above; leaf scars subrhominc, the two upper ones often forming a 

 gentle arch, sometimes nearly a horizontid line, making the alveoli true 

 triangles, the lower 2 cm., the upper 12 mm. wide, about 1 cm. high, 

 diminishing toward the summit; leaf bases usually present, soft, sandy, 

 and fine grained; rarely reaching the surface, generally sunk to a depth 

 of 5 mm., sometimes of 2 cm.; vascular Ijundles often visible either as 

 slight protuberances on the ends of those leaf bases that rise highest in 

 the scars, or as small dots on those that lie deeper, or as a series of ridges 

 running clown into the scars where the central portion is deeper than the 

 outer portion, the rows 0.5 mm. from the outer margin, with occasional 

 faint traces of more central bimdles; ramentum walls when normal about 

 5 mm. thick, of a rather firm consistency, presenting a continuous sharp 

 ridge in the direction of the rows of scars from right to left, without visible 

 commissure ; reproductive organs abundant, one in the axil of each leaf, 

 small and doubtless mostly abortive, occupying wide triangular spaces 

 t)etween the leaf scars, causing the walls to appeal' abnormally thick; 

 spadices always present and flush with the walls, elliptical or circular in 

 cross section, the larger ones 2 cm. wide and 1 cm. high, often much 

 smaller; involucral scales abundant, occupying most of the space between 



