iew of the capillitium and stipe of Clastoderma De
Baryanum, Blytt.

Fig. 26.--Section through the capillitium, columella and stipe of
Lamproderma arcyrionema, Rost.

Fig. 27.--Perpendicular section through Lamproderma violaceum, Fr.

Fig. 28.--Perpendicular section through Lamproderma scintillans, Berk.

Fig. 29.--Section through the capillitium, columella and stipe of
Comatricha Ellisii, Morgan.

Fig. 30.--Sectional view through the capillitium and columella of a
portion of Comatricha crypta, Schw.

Fig. 31.--Sectional view through the columella and capillitium of a
portion of Comatricha longa, Peck.

Fig. 32.--A portion of the capillitium of Stemonitis tenerrima, B. &
C.--A sectional view through the columella above and below a view of the
superficial network.

Fig. 33.--A portion of the capillitium of Stemonitis splendens, Rost.--A
sectional view through the columella above and below a view of the
superficial network.

Fig. 34.--The capillitium of a very short sporangium of Stemonitis
Webberi, Rex; the breadth, however, somewhat exaggerated.

Fig. 35.--Showing the stipe, columella, apical disk and pendent
capillitium of Enerthenema papillatum, Pers.

Fig. 36.--Perpendicular section through the capillitium, columella, and
stipe of Diachaea Thomasii, Rex.

NOTE.--The figures of the objects are drawn as they appear under a
magnifying power of about 100 diameters.

[Illustration: The Journal of the Cin. Soc. Natural History.

VOL. XVI. PLATE XI.]

ORDER VII.--DIDYMIACEAE.

Sporangia simple and subglobose, or plasmodiocarp, rarely combined into
an aethalium. Wall of the sporangium a thin membrane with an outer layer
composed of minute stellate crystals, or of minute roundish granules of
lime; these either lie singly upon the surface, or are compacted into a
crustaceous coat. Stipe present or often wanting; the columella usually
conspicuous and well-developed. Capillitium consisting of very slender,
often sinuous threads, which extend from the base of the sporangium or
from the columella to the walls, either simple or outwardly branching a
few times at a sharp angle, combined into a loose irregular net by a few
transverse branchlets, which are situated chiefly at the extremities.
Spores globose, violaceous.

This order is readily distinguished from the Physaraceae by the absence
of lime from the threads of the capillitium.

TABLE OF GENERA OF DIDYMIACEA