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Rh PTTANTrROOAMTA. 375

loured. If the stem be not attacked, the plant recovers when

removed.

Lowe, E. T.— Some Account of the " Chaparro" of Fuerteventura, a new species of Convolvulus, A. N. H. ser. 3. vi. pp. 153-6.

The ' Chaparro' {Convolvulus Caput- Medusae) is a dwarf, woody, spinose plant, growing in dense convex masses on the sterile sea- ward slopes of the western shore of Fuerteventura. The root and wood are reported to possess a fragrance rendering it commer- cially valuable : this property Mr. Lowe was unable to confirm. The plant is, however, readily inflammable, while green or even growing.

Malt, J. K. — Flora von Deutschland, nach der analytischen Methode. AVien. 1860, pp. 585.

Mastitis, C. F. Ph. VoN.-Mun. Sitz. 1860. Heft iii. pp. 308-330.

A critical and detailed seriatim examination into the value of the

characters upon which certain genera {Ladenbergia and JRemijia)

have been based, at the expense of the Linnean genus Cinchona.

Herr v. Martius proposes to reunite these.

Maximowicz, C. J. — Nova Grenera Cucurbitacearum. Ann. S. 1ST. Ser. iv. (Bot.) Tom. xiii. pp. 95-6.

Descriptions of Schizopepon and Mitrosicyos from the author's ' Prhnitia? Flora3 Amurensis.'

Mettexius, G-. — Beitrage zur Anatomie der Cycadeen. Leipsic, I860.

Miciialet, Ettgeke. — Sur la conservation dans le sol des graines de diverses plantes. Bull. Soc. Botan. Tom. vii. pp. 334-338.

In pools in alluvial deposits bordering the Jura, which, accord- ing to a custom of the country, are drained at intervals and cultivated, M. Michalet notes the re-appearance of certain sj^ecies after the intervals (sometimes extending to 12 or 15 years) of submergence and exposure. Among the species springing up on the drained surface, and which are rare or infrequent in the dis- trict generally, are Carex cyperoides, Scirpus llichelianus, Mumex maritimus, Potentilla supina, Bidens fasligiata (Michal.).

On the occasion of the construction of a road in which gravel was employed, brought from a pit excavated in a sterile field, Galium anglicum, a rare plant near Chaussin (Jura), sprung up wherever the gravel had been deposited and in the pit from which it was obtained. This was five years ago, and the Galium has since disappeared.

Tripolium filiforme, L. (T. micrantJium, Viv.), a plant affecting the coast and valleys of the large rivers, was found in plenty by heaps of gravel used for road-making near Dole. As an example of a species presenting instances of almost instantaneous diffusion, the author mentions Phelipcea ccerulea, which usually occurs very sparingly. In 1851 and 1852, it was found in enormous quantity by the Doubs. The following year none was to be found. The unwonted abundance of Phelipcea he attributes to the seeds having vol. i. — n. n. e. 3 c