LANKESTERIANA


 Figure 11. B-Sepa-1 pelotons with intercellular con-
nections, stained by acid fuchsin (confocal laser micro-
scope, x 24).


 Figure 13. A-Sepa-1 pelotons in S. ,pari'ira, stained
by acid fuchsin (phase contrast microscope, x 20).

there is no penetration through hairs. The very few
pelotons are digested immediately and mycelium
can not invade the other cells: typical symbiotic
alternation of infection and digestion seems to be
shifted toward digestion.
 Symbiosis between A-Sepa-1 and S. parviflora
and digestion of fungus in S. spiralis suggest a dif-
ferent potential specificity of the fungus for the two


 Figure 12. A-Sepa-1 epidermal penetration in S. parvi -
flora (phase contrast microscope, x 40).


 Figure 14. B-Sepa-1 penetration in S. spiralis root by
hair (x 40).

hosts: S. parviflora is micorrhizated by the two
fungi and S. spiralis only by B-Sepa-1, in vitro. If it
is true, inoculation of fungi in S. parviflora and S.
spiralis and their infective patterns are an addition-
al confirmation that there is no species-specificity,
but potential or ecological specificity between
orchids and fungi, as suggested from Masuhara and
Katsuya (1989).