(292 ) 
C. polyphylla Michauxté A. Br. Boston Jour. Nat. Hist. 5: 264. 
1845. 
C. ( polyphylla) Michauxité A, Br. Monatsber. K. Akad. Wissensch. 
Berlin 1858: 362. 1858. 
C. gymnopus Michauxid A. Br.; Allen, Char. Am. 2. 1880. 
C. polyphylla A. Br. Am. Jour. Sci. 46: 93. 1844; and sub- 
sequent publications before 1868, in part only. 
Monoecious, the antheridia and odgonia borne upon the same leaf- 
nodes, including that between the sas aor anoni basal and the lowest 
of the corticated leaf-internodes: 10-40 cm. high, La ta - 
grayish, lightly to heavily fee robust; stems 
diameter, triply corticated; spine- -cells few except on youngest ne 
lanceolate, not exceeding and usually considerably shorter than the 
uncorticated basal leaf-internodes: leaves 12-16 in a whorl 
cm. long, usually containing 10-13, internodes, all the latter triply 
corticated except the basal one, and the apical cell, which are un- 
corticated; leaflets at all nodes greatly reduced, 0.15—0.3 mm. long, 
usually near the lower limit, or much more rarely those at the upper- 
most leaf-nodes 0.5 mm. long, as bracteoles the anterior pair 0.5—1.2 
mm. long, always shorter than the sporocarps, Dies bracteoles 
greatly reduced or obsolete, usually 0.o8—o.2 m m. Tong, very rarely 
somewhat longer: sporocarps o.98-1.4 mm. long, 0.63-0.75 mm. 
wide; odspores 0.6-0.9 mm. long, 0.35-0.56 mm. wide, er 12-16 
striae; whorl of crown-cells 0.16-0.19 mm. high, o.17-0 
wide at base, the individual cells lanceolate, erect or rea, some- 
times early deciduous 
Type locality : Haiti. 
Distribution: Illinois and Virginia to Mexico, the West Indies 
and South America. 
Illustrations : Dict. Sci. Nat. doc. c¢t.; Kiitz. Tab. Phyc. 7: pé. 
77. fr 2. 
Exsiccatae: Allen, Char. Am. Exsicc. 9, from Harper’s Ferry, 
Virginia, and Mount Carmel, Illinois. 
There seem to be two forms in this, represented by the two spe- 
cific names by which the species was first known, C. haztensts 
having somewhat longer leaflets and posterior bracteoles than C. 
polyphylla. The extreme forms are fairly distinct, but there is 
considerable variation on single plants and many intermediates 
occur. Still longer leaflets and bracteoles would bring the plant 
within the limits of C. folzolosa, and this in turn links though 
not closely with C. elegazs. More difficult are some forms most 
frequent in the Mississippi valley, which lie between typical C. 
