Volume 2--3 of the illustrations series depicts the lycophytes and ferns. Among the 38 families shown are: Lycopodiaceae (clubmosses); Isoëtaceae (quillworts, hollow, grasslike aquatics); Selaginellaceae (spikemosses, creeping plants with scalelike leaves); Equisetaceae (horsetail family); Ophioglossaceae (adder`s tongue fern); Psilotaceae (fernlike plants); Marattiaceae (ferns); Osmundaceae (royal fern family); Hymenophyllaceae (filmy ferns and bristle ferns); Gleicheniaceae (forked ferns); Dipteridaceae (umbrella ferns); Lygodiaceae (climbing ferns); Marsileaceae (pepperwort or water-clover family); Salviniaceae (heterosporous ferns, one species used as forage); Cibotiaceae (tropical tree ferns, Cibotium barometz source of the traditional Chinese herbal medicine "Gouji"; also, hairs of the rhizome used as wound dressing); Cyatheaceae (including world`s tallest tree ferns); Lindsaeaceae (tropical ferns); Dennstaedtiaceae (terrestrial ferns and brackens, some ornamentals, mentioned in the Shi Ching (Book of Poetry) from 7th century BC); Pteridaceae (including 89 species found naturally only in China, among these, Adiantum reniforme var. sinense used in Chinese medicine for over 100 years and known as "he ye jing quan cao" in Sichuan); Aspleniaceae (spleenworts); Diplaziopsidaceae (medium to large ferns found near streams in forested areas); Thelypteridaceae (Macrothelypteris torresiana, containing flavonoids of possible medicinal value, Ampelopteris prolifera, the young fronds eaten as a vegetable, Pronephrium penangianum, medicinal herb in Sichuan); Woodsiaceae (cliff ferns); Rhachidosoraceae (Matteuccia struthiopteris cultivated as an ornamental); Athyriaceae (Diplazium esculentum, D. viridissimum, vegetable ferns); Dryopteridaceae (wood ferns, Polystichum tsus-sinense, houseplant, Bolbitis heteroclita, aquarium plant); Polypodiaceae (Drynaria roosii, basket fern, used in traditional Chinese medicine for bone fractures and rheumatoid arthritis and known as "Gu-Sui-Bu," some Pyrrosia species used in traditional Chinese medicine, as are Lemmaphyllum diversum, especially for inflammation, joint pain, and to control bleeding, and L. drymoglossoides).