RIGIDAE. 
This section is a very natural division of the genus readily 
recognized by the rigid incurved exoperidium segments of the dried 
specimens. 
GEASTER DRUMMONDII —Ex¬ 
operidium strongly hygroscopic. Endo- 
peridium sessile. Mouth sulcate, darker 
color than the remainder of the pendium. 
This beautiful little species has 
only been collected once in Australia 
by Drummond many years ago. It is 
marked by the dark sulcate mouth differing in this respect from Geaster 
striatulus.* Our figure 8 is from the type specimens at Kew. 
eopic. 
GEASTER STRIATULUS — Exoperidium strongly hygros- 
Endoperidium sessile. Mouth sulcate, concolorous with balance 
of the peridium. 
This little species was described (Grev. 9- 
8) from Australia. Though I have seen no 
specimens from Australia, this little plant is of 
wide distribution, reaching me from Sweden, 
Hungary, Africa and United States. It is 
everywhere a rare species Our figure (9) is 
Fig. 9 . made from a Hungarian specimen. 
SYNONYMS. — Geaster Drummondii (Geastrae page 12, not Berkeley). 
Geaster umbilicatus, (Morgan’s Flora not Fries). Geaster ambiguus,(Gast. Hung. 
not Montague). Geaster Schweinfurthii, (Eng. Jahr. 14-361). Geaster inammosus 
(Ellis Exs. No. 110, not Fries). 
GEASTER FLORIFORMIS-—Exoperidium thin, strongly hy¬ 
groscopic. Endoperidium sessile. Mouth even, indefinite. 
This species can be readily distinguished 
from the preceding by the mouth which is not 
sulcate The plant varies much in size (cfr. Myc 
Notes, p. 143), from a little tiny form not larger 
than a peaf to specimens with endoperidium a 
centimeter in diameter. The usual size is as we 
figure it (fig. 10) from American specimen. 
There are two collections at Kew from N. S. Wales and Victoria, both 
correctlv labeled. 
Fig, 10. 
* We regret that in our Geaster pamphlet we took another’s opinion that Geaster Drum¬ 
mondii is the same as Geaster striatulus. The dark mouth which is the feature of the plant, is as 
good a character as exists in the Geasters. True, that specimens I have seen sometimes have this 
character only faintly indicated, but there are no “species” in this genus in which intermediate 
furms do not occur. 
t Svnonym. Geaster hungaricus Gast. Hung., p. (14. 
16 
