species, the spores
do, in fact, show a tendency to cling together, a characteristic which
Badham was perhaps first to notice; but that this is occasioned by their
being surrounded by a sac or common pellicle has not been proved nor
even suggested, by any subsequent investigator. Berkeley's genus was
therefore founded upon a slight mistake; but we may conserve his rights
in the premises if we write _Badhamia_ (Berk.) Rost., and so keep
history straight.

=Key to the Species of Badhamia=

_A._ Spores ovoid or ellipsoidal

_a._ Spores free 1. _B. ovispora_

_b._ Spores adherent 2. _B. versicolor_

_B._ Spores spherical

_a._ Sporangia yellow

i. Spores free 3. _B. decipiens_

ii. Spores adhering 4. _B. nitens_

_b._ Sporangia grey, spores free

i. Always sessile 5. _B. panicea_

ii. Stalked, at least some of them

O Stipe when present black

+ Globose, small .5 mm. 6. _B. affinis_

++ Larger, spores strongly spinulose 7. _B. macrocarpa_

+++ Discoidal or annulate 8. _B. orbiculata_

OO Stipes membranous yellowish

+ Stipes long, sporangia iridescent 9. _B. magna_

++ Stipes short or none; iridescent 10. _B. foliicola_

_c._ Sporangia grey, spores adherent

i. Stipe when present yellowish

+ Wall iridescent, spores uniformly
marked 11. _B. utricularis_

++ More calcareous, spores strongly
marked on one side 12. _B. capsulifera_

+++ Colorado, spores anon barred 13. _B. populina_

ii. Stipe when present black 14. _B. papaveracea_

_d._ Sporangia brown, lilacine

i. Sessile 15. _B. lilacina_

ii. Stipitate, columellate 16. _B. rubiginosa_

1. BADHAMIA OVISPORA _Racib._

1884. _Badhamia ovispora_ Racib., _Myx. Ag. Cracov._, XII., p. 72.

Sporangia sessile depressed-globose or plasmodiocarpous, white or
ochraceous, covered by dense calcareous scales; capillitium white, the
lime-granules sometimes aggregate