Botany and Zoology. 315 



ward become independent of it. The extended observations of 

 Professor Penhallow, recorded in the three preceding numbers of 

 this Journal, may be interpreted in accordance with these views. 

 We should say that they do not necessitate the quite different 

 conclusions he draws in his summary on page 189. a. a. 



4. Baillon's Dictionnaire de Botanique we now have down to 

 the nineteenth fascicle, and down to the latter part of the letter 

 G, with the accustomed fullness of articles of every sort, germane 

 to the subject, and with the usual wealth of illustrations. See 

 for example the article Fruit. A. g. 



5. Baillon's Histoire des Plantes. — After considerable delay we 

 now have the closing part of the eighth volume, but with title- 

 page to the parts only, none of the volume itself; and the same 

 is to be said of the two last preceding volumes. The present 

 part, which goes with the Compositce, is a monograph of the Cam- 

 panulacem (in a very extended sense), Cucurbitacece, Loasacece, 

 Passifloracew, and Begoniacece. a. g. 



6. Plants naturalized in the southwest of France: Recherches 

 sur les Plantes naturalisees dans le Sud- Ouest de la France; par 

 Joseph Lamic. An exhaustive article of 122 pages in the Annales 

 des Sciences Naturalles de Bordeaux et du Sud-Ouest, torn, iv, 1885. 

 — The basin of the Garonne, and especially the neighborhood of 

 Bordeaux and Bayonne, is thought to have received a lai'ger in- 

 fusion of foreign plants, in proportion to its indigenous species 

 than any other part of France, or even of Europe. Dr. Guillaud 

 estimates them at about one-thirtieth of the Phasnogams of the 

 flora. M. Lamic counts them at 80 out of 2500. In this essay, 

 after sketching the features of the region (ancient Aquitania), and 

 defining what he means by a naturalized plant (not hesitating to 

 include those which multiply by budding, if they are fully estab- 

 lished), and considering the degrees, proofs, and means of natural- 

 ization, he takes up these denizens in order, and tells us what is 

 known of the mode and time of introduction. We will note 

 some of the North American species. 



Lepidium Virginicum, L. — This was detected at Bayonne with- 

 in the half century, and up to 1868 was unknown elsewhere in 

 France. It has spread widely since the introduction of railways, 

 and doubtless by their aid, partly through increase and continuity 

 of its favorite habitat, in glareosis. 



Senebiera pwrnatifida, DC, or didyma, Pers. — This is attrib- 

 uted to the Southern United States, but its home is probably 

 farther south. 



-Hibiscus Jfoscheutos, L. — The history of the identification of 

 H. roseus of S. Europe with this species is given in full detail. 

 There is no documentary evidence of its introduction into Europe 

 where it has been known (in Italy) for 350 years. If our author 

 were acquainted with it in its native country he would have dis- 

 missed his lingering doubts as to its North America origin. 



Rhus typhina, L. — Propagates by seed and is establishing 

 itself in southwestern France. 



