Page:Popular Science Monthly Volume 43.djvu/815

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A SOUTHWESTERN PLANT GROUP.
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Northern flora. The gorgeous yellow of Opuntia Rafinesquii and O. Missouriensis, flourishing on a sandy hillside beneath the July sun, can well inspire the soul of botanist and flower-lover.

Fig. 6.—Yucca gloriosa.

It is an interesting and significant fact that among the Rotatæ, as allies of the Opuntia, we find the two little genera that