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202. Cypripedium spicerianum. Transverse section of leaf midway between apex and base, showing deep aqueous 



tissue and narrow leaf at midrib region. 



203. Cypripedium villosum. The same, showing narrow aqueous tissue and wide leaf at midrib region. 



204. Cypripedium lathamianum. The same, showing narrower aqueous tissue and leaf wider at midrib than in 



either parent. 



205. Cypripedium lathamianum inversum. The same, showing aqueous tissue in width between the two parents, 



and wider leaf than in either parent. 



206. Cypripedium insigne maulei. The same, showing aqueous tissue almost same width as in C. villosum, but 



narrower leaf at midrib region. 



207. Cypripedium. nitens. The same, showing narrower aqueous tissue than in either parent, and width of leaf 



between the two parents. 



