Beautiful Laelia tenebrosa... that definitely is Laelia tenebrosa var. aurea... well, actually, the real name now is Hadrolaelia tenebrosa var. aurea... yours may grow taller than normal Laelia tenebrosa plants if you give it more light...
I had Laelia tenebrosa var. aurea 'Walton Grange' FCC/AOS (actually 2)... they were about 2.5 feet tall, and kicks out about 7-10 super-sized yellow flowers... the var. aurea is a very strange variety because of the size and vigor difference...
As for the "keiki" on the spike, that will most likely turn up as another spike (might just yellow off though)... this usually happens on some species of Grammatophyllum, Catasetum, Mormodes, Cycnoches, and Clowesia...
Out of curiosity, I know the var. aurea is rare, anyone grow it or have the cultivar 'Walton Grange', or the Laelia tenebrosa var. fumacina?
-Pat