How many Den species do you have?
 

I just counted mine and I have 25 different Den species.

How many do you have and give us a peek at your list. :)

anosmum var alba
antennatum
bracteosum
bullenianum
canaliculatum
chrysotoxum
crocatum
cucullatum
draconis
farmeri
findlayanum v oculatum
formosae
kingianum var album x kingianum
lawesii
lindleyi
loddigesii
moniliforme
nobile
pulchellum
speciosum
thyrsiflorum
trantuanii
unicum
uniflorum
victoriae-reginae

I have killed:
cuthbertsonii
formosae
heterocarpum
lamyaiae
brymerianum
mutabile
tobaense
cyanocentrum
masarangense

I am only just starting off with species orchids in general, but I plan to have a LARGE number of dens! So far I've only got:

trantuanii
peguanum
subclausum (on its way in the post)

The subclausum will be the first orchid I'm going to attempt growing outside on my balcony. It's cold tolerant, but will grow equally well in intermediate conditions. This will cover our Irish winters and summers nicely (I hope).

I don't have too many Dens, but most are species

atroviolaceum (v pygmy)
bigibbum (v compactum)
kingianum (tipo and silcockii)
victoria-reginae
spectabile (seedling)
nobile (keikis given to me last summer - one's blooming now) :)

have killed:

lawesii
moschatum (honestly, I had the moschatum a few years, never bloomed, then just up and died) :p
moniliforme

I had avoided Dens for a while - with so many different types, they seemed intimidating to me, but the ones I have now, at least, are all very rewarding :)

Well that's an easy question, I only have 2! kingianum and aphyllum. Neither like me, neither want to bloom.
I do have an aberrans on the way, which should be easier since it doesn't need a winter rest. :)

Let's see...

amabile
anosmum
chrysanthum
findleyanum var. oculatum
speciosum
aggregatum
chrysotoxum
griffithianum
palpebrae
thyrsiflorum
fimbriatum var oculatum
hancockii
moschatum
densiflorum
bracteosum
smilliae

plus a bunch of hybrids... huh, never realized I have so many...

I'm not at all familar with Den species, so I'll have to look all these up! I do want to venture out into Dens a bit more. (which is why I got aberrans)

Den. sp. (like delacouri)
Den. amabile
Den. discolor
Den. elliotianum (aka Den. garrettii)
Den. gregulus
Den. kingianum
Den. lineale
Den. longicornu
Den. nindii
Den. peguanum
Den. stratiotes
Den. taurinum
Den. williansianum (I think, I forgot - they're small seedlings)

only one....cuthbersonii

was thinking of getting a laevifolium someday

Kinda missing Den. unicum. Might get one some time soon, idk.

I've been eyeing Den aberrans for a long while. Latouria Dens are something I've been trying to get back into again.

I really love the Antelope Dens (aka Spatulata Dens)! I think the hybrids pale in comparison to their species counterparts.

Not a huge fan of Formosae Dens, but Den. longicornu is awesome!

Another one of my favorite groups are Dens in the section Stachyobium (i.e. Den peguanum, Den gregulus), 'cause most of them are tiny miniatures that fit into any collection easily.

Oh dang, let's see if I can get these out from memory. I think this is all of the living ones:

nobile
parishii
loddigesii
aphyllum
findlayanum
moniliforme
tortile
hercoglossum
trantuanii
draconis
formosum
cf. chrysanthum
brymerianum
lindleyi (incl. one that's prob. Ueang Pheung)
jenkinsii
lawesii
canaliculatum
speciosum
tetragonum
lichenastrum
prenticei
toressae
striolatum
wassellii
not-wassellii (labeled that but vegetatively very different)
linguiforme
rigidum
anceps
equitans
clavator

Plus probably 8-10 hybrids.

--Nat