#SmithsonianInBloom via field notes in #BHLib from @SmithsonianArch! Joseph Nelson Rose's "Greenhouse Notes" provides flowering date & descriptions of various specimens, like this Opuntia #cactus (flowering May 6, 1912), also illustrated in his "The Cactaceae" (right, fig. 1).

@SmithsonianArch Explore Rose's "Greenhouse Notes" in #BHLib via @SmithsonianArch & the @FieldBookProj: s.si.edu/2rBJCu4. The #SciArt in this tweet is by Mary Emily Eaton from "The Cactaceae" v.1 (1919) by Rose & Britton, via @NYBG: s.si.edu/2G3W7mN #SmithsonianInBloom