Doug, I put your numbers it the enclosed mark, so it can be easily read.
acmodotum
adductum
adductum var anitum
appletonianum
argus
armeniacum [21] [28] [78]
barbatum [38] [66] [73]
barbigerum
bellatulum [34]
bougainvilleanum
bullenianum
bullenianum var celebesense
callosum [55] [65]
chambelainianum
charlesworthii
ciliolare
coccineum
concolor
dayanum
delenatii [21] [23] [28]
dianthum
druyii
emersonii [10] [14]
emersonii var huonglanae
exul
fairrieanum
fowliei
gigantifolium
glanduliferum
glaucophyllum [28]
godefroyae
gratixianum [72]
hangianum
haynaldianum [21] [35] [58]
helenae
hennisianum
henryanum
herrmannii
hirsutissimum
hirsutissimum var chiwuanum
hirsutissimum var esquirolei [35]
hookerae
hookerae var volontenum
insigne [42] [56] [62]
javanicum
javanicum var virens
kolopakingkii
lawrenceanum
liemianum
lowii [21] [35]
lowii var lynniae
lowii var richardianum
malipoense
malipoense var jackii
malipoense var hiepii
mastersianum
micranthum [11]
mohrianum
moquetteanum
niveum
ooii
papuanum
parishii
philippinense
philippinense var roebelenii
platyphyllum
praestan
primulinum [34] [66]
purpuratum [39] [61]
randsii
rothschildianum
sanderianum
sangii
schoseri
spicerianum [28]
stonei
sukhakulii [55] [74]
supardii
superbiens
thaianum
tigrinum
tonsum
tonsum var braemii
tranlienianum
urbanianum
venustum [40]
victoria-mariae
vietnamense
villosum
villosum var boxalii
villosum var annamense
violascens
wardii
wentworthianum
wilhelminia