97 
A SYNOPSIS OF THE RHIZOCARPEZ. 
By J. G. Baxer, F.R.S., F.L.S. 
Suborder 1.—SarviniEz. 
gS ps genes Bey Ars + 
Conceptacles usually single, always 
and containing sporangia of only one kind. 
: 1. Sanvinza (Micheli) Schreb. 
Conceptacles globose, membranous, indehiscent, monoicous, 
seated in clusters on short branches of the floating stem, 1-2 0 
~ ach cluster containing 10 or more turbinate macrosporangia, 
each of which contains a single macr ospore: several of each 
cluster containing very numerous globose gee Spee cae which 
are much smaller than the macrosporangia, a each contains 
numerous minute microspores. — Fugacious suns, with slender 
and close erecto- -patent oem veinlets connected by a few 
arches. Sporangia of both kinds borne on a much- branched 
filamentous receptacle. 
Fronds flat, floating, horizontal. 
ronds about three times as long as broad Sp. 1. 
preade ovate- ene, or ee or oblong: 
é ehicalar Sp. 2-7 
. pee ae oe orbicular ; : Sp. 8, 9. 
. Fronds ahocest with edges f folded together : ; Sp. 10, 11. 
| oe known species Be ae 
. 8. osroxcrrorza Mart. Te. Crypt. Bras. 198, t, 75; fig. 2, and 
t. 16 — Fronds laxly — “subsessile, horizontal, oblong, em 
inate, cordate at the bas e, 1¢-2 in. long, $ in. broad, the as 
rapa veinlets as close as in S. Radula, the upper with 
frm with bristly tips, the lower side finely oe 
Conceptacles 10-20 together in peduncled clusters, the cells | 
their walls regularly hexagonal. Pe 
- Amazon Valley and Central Brazil, Martius, Pohl, St. 
Hilaire. 
2. S. narans Hoffm. Germ. ii. 1; Schk. Crypt. t. 178; : Ones 
t. gs. 1-11 a covticiilats Roxb. in Cale. Journ. 184 
t. 18-20; Griff. Te. t 128. — S. vulgaris Rupr.— S. europea 
esv.— §. Sprengelii Corda Rhizos. 10, t. 2, figs. 12-23 ie 
n. — Fronds oblong, horizontal, rounded or sig ly 
date at the long, bright green on. Se upee year 
