Lobivia ferox sp nov

Roots fibrous; plants globular, dm. in diameter or more, almost hidden by the long upwardly curved spines; ribs numerous, often as many as 29, deeply undulate and broken into thin, acute tubercles 2 to 3 cm. long; spines light brown, sometimes mottled; radial spines 10 to 12, slender, 4 to 6 cm. long, somewhat curved; central spines 3 or 4, somewhat flattened in one vertical row, rather weak, curved upward, 10 to 15 cm. long; flower-buds woolly; flowers and fruit not seen.

Collected on dry hills east of Oruro, Bolivia, August 18, 1914, by J. N. Rose (No. 18918).

In cultivation, as is shown by our illustration, the long upturned spines are very poorly developed at the top of the plant which is nearly naked. This plant was observed in only one locality in Bolivia, although it is doubtless to be found elsewhere; it grows on very dry gravelly hills among low thorn bushes. It is easily detached from the soil having only fibrous roots and in this respect is very unlike another species of this genus (see No. 18919) which has fleshy deep-seated roots. In its long stout upturned spines it is unlike any other plant we know and has a very striking habit. Several living plants were sent to the New York Botanical Garden in 1914 by Dr. Rose, one of which still persists, but it has never flowered. We are disposed to refer here an illustration (Illustr. Hort. 6: pl. 214) which was called Echinopsis pentlandii.

Figure 63 is from a photograph of a plant brought by Dr. Rose from the type locality in 1914.

Fig. 65.—Lobivia ferox.

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