Ill 
differs in its compact, tufted growth, thin, delicate stem and leaves, 
want of all incrustation and flexibility. The sterile leaves are simple 
and very long, the ultimate segment (in the fertile leaves likewise) 
always elougatcd, but little attenuated. The fertile heads are small, 
compact, long tufted. The first segment of the fertile leaf is extremely 
snort, and here only are very short lateral rays, which are quite tvant- 
tng on the ^ the innermost, smallest fertile verticils, or are so dwarfed as 
to be indistinguishable. Since the delicate cell-membrane tears easily 
on preparing the plant, it is difficult to spread it out and examine it. 
It forms dark green, thick tufts a hand high. Stem not over 480// 
thick; leaves in the sterile verticil 6, simple, apparently 3-celled, and 
about 40™""- long. I saw, however, only two cells, often only one. 
The first cell is 20-25"'"'- long, 30-38/^ thick, also the second cell 
seemed very long and but little attenuated. Fertile verticils bunched ; 
bunches complicated by axillary shoots; the first segment of the fer- 
tile leaf is very short, bearing seeds and some (2) small, 3-celIed, 
lateral leaflets (^rays); the terminal leaflet larger, 3-celled, the middle 
or even the lowest cell the longest, (Italics mine. T. F. A.) Terminal 
cell always long, curved, attenuated, rounded at the point. The in- 
nermost fertile leaves are very short and apparently (to me) without 
lateral leaflets, only with seeds on the first node, and monoecious, 
though I saw the antheridia fallen from the plant only. Spor- 
angia with a short, blunt, rounded coronula, often with the base of 
the latter much swollen, several together, seldom with short stipes. 
Nucleus broivn, with 9 striae and slight angles. Sporangia 580-600// 
long, 420-430/i broad, nucleus 360-400// long, 300-320// broad; an- 
theridia 360// in diameter. 
Swamps near Columbus, Ohio (com. Lesquereux, 1855). The 
specimens are mixed with another species, apparently N. Jlexilis.'' 
I have been unable to obtain specimens of this species, nor does 
Irofessor Lesquereux know the locality in which it was collected, 
I await its rediscovery. 
Tolypella glomerata^ Leonh., — This is characterized as follows, by 
A.^Braun in his Characea^ of Africa : 
Statura mediocris, color incrustatlone glaucus vel cinerascens, 
I'olia verticillorum sterilium indivisa, fertilia capitulorum (et non- 
nunquam transitoria) simpliciter divisa, radiis 3-4- cellularibus parum 
attenuatis obtusis. Sporangia in divisura foliorum et in fundo ver- 
ticflli aggregata, nucleo ovali, 0.30-0.36'"™- longo, fusco, 8-9-gyrato. 
Var, ABBREViATA, Hov, var.^ differs as follows : 
Statura variabilis, color incrustratione cinerascens vel munda. 
^^}\^ et stcrilia et fertilia abbreviata^ radiis 3-cellularibus vix attenu- 
atis oblusis. Sporangia aggregata, coronula evanescente, nucleo 
fusco 300-335// longo, striis 6-%, acutis vix prominulis. Antheridia 
'onge stipitata 230-380// diam. 
I have thus far discovered two forms; ont, forma incrustata, large, 
to 0.15m. j^jg,^^ densely incrusted, with smaller antheridia (230/i in 
^iam.) and larger nuclei (335// long), striae 7 to 8. Collected by Mr. 
J^nngle m alkaline pools in Arizona, April, 1881, and agam m 1S82. 
^^^oWi^x, forma pygmcm munda. small, 0.02-0.03™" high, without the 
slightest incrustation, with very short leaves (as above), larger anther- 
t? 
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