24
ENDOSPOREAB
fPHYSAEUM
Sporangia much compressed, forming rosettes or netlike plasmodiocarps ; lime-knots fusiform.
46. P. gyrosum
Sporangia small, crowded, chestnut-brown.
47. P. Famintzini
b. Sporangium-wall double—
* Sporangia scattered, forming plasmodiocarps—
Plasmodiocarps sinuous, much compressed, white ;
spores marked with strong ridges and spines,
brownish-purple.
48. P. echinosporum
Plasmodiocarps sinuous, much compressed, white or
buff ; inner wall fragile, colourless ; spores purplebrown, spinulose.
49. P. sinuosum
Plasmodiocarps sinuous, buff or brown, marked with
pale lines of dehiscence ; spores pale brownishviolet, nearly smooth.
50. P. bogoriense
Plasmodiocarps white, usually compressed ; inner
wall purplish, persistent; spores dark purplishbrown, spinulose.
51. P. bitectum
** Sporangia crowded, reniform or subglobose—
Sporangia white, subglobose, outer wall shell-like.
52. P. testaceum
Sporangia yellow ; spores dark, rough, .10-14 ¡1.
53. P. contextum
Sporangia yellow; spores pale, nearly smooth,
8-10 p.
54. P. conglomeratum
B. Lime-knots yellow, red, or brown—
Slender plasmodiocarps and large branching limeknots j'ellow.
55. P. Serpula
Plasmodiocarps and lime-knots brown.
56. P. aeneum
Sporangia red or brownish-buff ; lime-knots large,
angular, orange-red or red-brown.
57. P. rubiginosum
Sporangia red ; lime-knots rounded, yellow, often
with red centres.
58. P. lateritium
Sporangia yellow or orange, with single walls ; limeknots angular, yellow.
59. P. virescens
Sporangia clay-coloured, subcylindrical, clustered;
lime-knots clay-coloured.
60. P. digitatum
Plasmodiocarps stout, yellow or buff, with double
walls ; lime-knots large, yellow, angular.
61. P. alpinum
1. P. leucopus Link in Mag. Ges. Nat. Fr. Berl., iii. 27 (1809)