Ever found yourself trying to sort out a plant name you've elicited, not knowing any botany worth mentioning? Well, it turns out the botanists are a step ahead of the linguists on the digital libraries game, at least in Spain: the Digital Library del Real Jardín Botánico CSIC has a pretty remarkable array of books to browse online. The one that just saved my etymology of the Kwarandzyey plant name tsifəṛfəẓ is Etudes sur la flore et la végétation de la Sahara centrale. Vol. III: Hoggar, which gives both Tamasheq and binomial names for each plant mentioned. Unfortunately it's clear that not all the works give translations of the names, but it's still worth a look.
On a similar note, I've found Sahara-Nature handy sometimes.