Roget's Thesaurus: Entry 369 (The science of plants)

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#369. [The science of plants.] Botany. -- N. botany; physiological botany, structural botany, systematic botany; phytography[obs], phytology[obs], phytotomy[obs]; vegetable physiology, herborization[obs], dendrology, mycology, fungology[obs], algology[obs]; flora, romona; botanic garden &c. (garden) 371[obs]; hortus siccus[Lat], herbarium, herbal.

botanist &c.; herbist[obs], herbarist[obs], herbalist, herborist[obs], herbarian[obs].

V. botanize, herborize[obs].

Adj. botanical &c. n.; botanic[obs].