Aloes and a small greenhouse don't often go together, but some species remain small enough for me to collect. Have a look at the ones I do have and also...

check out the aloe-corner in my greenhouse

Aloe aristata
Aloe erinacea
Aloe suprafoliate from swaziland
Aloe variagata
Aloe krapholiana var. dumoulinii
and more aloes:
A. brevifolia
A. grandidendata
A. krapholiana var. krapholiana
A. longistyla
A. lutescens
A. pachygaster
A. pictifolia
A. sinkatana
A. rauhii?