52 The Botanical Gazette. [February, 
EXPLANATION OF PLATE III. 
enprpia sani ga Reinsch. 
Fig. 1. Single plant of large size showing rhizoids; sub-dichoto- 
mously branching axis with fatty bodies in its contents; sporangia, many 
of which are empty (two bgeioad Shs zoospores); young resting spores 
and two see branchlet 
Fi febenting two heads with long perce sporangia, 
some of them éapty, and long sterile branchlet | 
n older simple plant with larger “ape masses and mature 
resting aac four of the sporangia empty the other two filled with 
the nae! of dead zoospores. 
Mature resting spore 7 sz/u; at the left a young resting spore — 
just senerated as a bu pt bis surface = the head. 
Fig. 5. Mature resting spore, surfac 
Fig. 6. Small plant; the habit and the. aad of the resting spores un: 
usual. 
Fig. 7. Abranch of the same enlarged, with single terminal resting 
s 
Fig. 8. A page irregularly branched with spherical resting sports 
‘ ae 2. Two resting spores of the same, that at the right seen in op 
ical section. 
ig 10. Sporangium just before the discharge of zoospores showing — 
papill 
ig. 11. A single zoos 
Fig. 12. Optical bate of wall of resting spore 
Fig. 13. Surface view of a portion of wall of resting spore. 
acute ise Thaxter. 
Fig. 14. General abit of pla 
ig. 15. A asc branch with two sporangia (one of them empty) 
and six resting spore 
Fig. 16. Two renihe spores showing relative thickness of wall. 
g. The original figures were drawn with the pion appros: 
Magnifications in 5 ig ers, ray rig been reduced abo ne-third bf 
photolithography. pe Pe fr , X90. Figs. 4, 5, 15, 16, 7 
0. i et2, 13x ais 
