Possibilities of C. nobilis as new cultivars
Of the four Clivia species (C.miniata, C.gardenii, C.caulescens and C.nobilis),
C. nobilis has a different leaf quality. I think this point is important
to keep in mind when breeding new clivia cultivars. The leaves of C.nobilis
are hard, leathery and also serrated along their margins. When you see
the overall form of C.nobilis, you will notice that there are spaces between
each leaf because the leaves are partially erect. I believe that C.nobilis
are found in coastal areas, so they have developed hard and partially erect
leaves in the process of evolution so that they could minimize the friction
against the sea breeze. Furthermore, their hard leaf surfaces protect them
from the rapid evaporation of moisture.
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Left : C.miniata with Akebono variegation x C.nobilis
Right : C.miniata with median striped variegation x C.nobilis
In Japan or China, as people find the beauty of C.miniata in its leaves
(not in its flowers), they have made great efforts to breed the strain
that has short and broad leaves. In Japan, we call this strain "Daruma".
The "Daruma" strain is a unique result of clivia breeding. I
think we can also breed similar cultivars like "Daruma" with
short, broad and hard leaves by using C.nobilis in the breeding.

C. miniata with striped variegation x C.nobilis
I guess that the Japanese "Daruma" strain was bred from Belgian
or German C.miniata hybrids with long but broad leaves. However, I have
no idea how people found C.miniata with broad leaves in the habitat. Consequently,
I just wonder if Belgian or German breeders bred the broad leaf strain
by using colchicines or a growth retardant. Anyway, I believe that we
can breed new cultivars with leaves that are hard like C.nobilis, broad
like "Daruma" and also that have Akebono variegation. We can
not call this new cultivar C.nobilis in the correct sense, as these are
actually C.nobilis hybrids.
Mr. Nakamura was early to spot this idea, and he has bred variegated hybrids
with hard leaves from the hybridization of C.miniata with Akebono variegation
x C.nobilis, and C.miniata with Fukurin variegation x C.nobilis.

C.miniata with Akebono variegation x C.nobilis
In particular, the hybrid bred from C.miniata with Akebono variegation
x C.nobilis has very clear white Akebono variegation compared with the
usual Akebono plants(C.miniata). Unfortunately this hybrid has long and
thin leaves, but Mr. Nakamura can expect new hybrids with hard and broad
leaves through his continuous breeding in the future.
(Shigetaka Sasaki and Revised by Ms. Helen Marriott)