A Grammatical Dictionary of Botanical Latin

crassulus,-a,-um (adj.A): somewhat thick, rather dense, slightly thick, fleshy, stout [> L. dim. of crassus,-a,-um (adj.A), q.v.]; TO DO DISTR

- [lichen] apothecia lecideina, paraphyses crassulae articulatae (Nyl.), the apothecia lecideinous [i.e. like Lecidea] , the paraphyses somewhat thick, jointed.

- [lichen] stipite crassulo sicco varie compresso vel plicato (Nyl.), with the stipe rather thick [or fleshy] variously compressed or plicate.

- [lichen] cortice magis inaequali, apicibus vix attenuatis crassulis. (Nyl.), with the cortes more uneven, with the apices scarcely attenuate [i.e. narrowed] somewhat thick.

Aster crassulus

Crassula L., dimminutive of crassus, from the fleshy, succulent, thickened leaves; dim. of L. crassus, thick; “from the somewhat thick leaves of these shrubs and herbs. Crassulaceae.” (Stearn 1996).