7B SHORT NOTES AND QUERIES. 



leaves, except a few slightly hastate with ascending lobes, are naiTOwly 

 lanceolate, entire, and obtuse. The inflorescence, instead of forming 

 dense leafy spikes, consists of small distant axillary cymes. Anything 

 more unlike normal C. riihrmn it is difficult to imagine, 



A curions point about London introduced plants is the general preva- 

 lence of some one species during a single year, and its only sparing recur- 

 rence afterwards, in 18G7 it was impossible to examine a waste bit of 

 ground without coming sporadically ujjon Setaria viricUs, Beauv. Last 

 year Lepidium rtiderale, L., seemed to be eqnally widely dispersed ; within 

 a short time I met with it at Highgate, Hampstead, aiid Teddington. It 

 is not improbable that the grain used for feeding horses may each year, 

 from market contingencies, come mainly from some one source. It seems 

 qnite likely that the liorsebags of horses belonging to builders, cab- 

 drivers, etc. may be a quite important means of distributing small exotic 

 seeds in the environs of large towns. — W. T. Thiselton Dyer. 



Barometric Plants. — Linnaeus, in his 'Flora Lapponica,' writing 

 on TrifoJium repens (274), states that is a common practice to predict 

 (tanquam e Barometro) a coming storm by an inspection of this plant ; 

 for when the air is hot then the leaves hang down, whereas when there is 

 moisture in the air the leaves are erect. This holds, he remarks, not only 

 for the Trefoil, but also for most plants which have declining stamens 

 i^' dadinata, deorsum inflexa instar Carinas Naviculae." Phil. Bot. 1770, 

 p. 219 ; cf. Babington, sub voce). All the flowers, too, generally con- 

 verge (connivent) when a shower is impending, as though they knew 

 that the water would interfere with the fertilization of the plant, for Avheu 

 the fertilization has been effected no sucli convergency is exhibited (" quasi 

 scientes aquam actum generationis turbare, coagulando vel diluendo fari- 

 nara genitalem, cum actu generationis celebrato nulla conniventife signa 

 ostendant"). He instances Mimosa, Cassia, Bauhinia, and their allies, as 

 plants whose leaves converge every evening, even though there be no 

 diminution of temperature. He concludes by asking what is the cause of 

 this sensitiveness, and what change there is in the night air beyond the 

 absence of light and heat? Dr. Hooker ('Student's Flora,' p. 79) states 

 that the leaflets of Oxalis are pendulous at night, and often sensitive to 

 light. Of Anagallis arvensis he remarks that the corolla opens in clear 

 weather, and other plants besides those specified doubtless obey the same 

 law. I would wish to repeat the question given above of the great 

 botanist, in the hope that some reader of the Journal will be able to give 

 an explanation of tliis curious phenomenon. Will the same explanation 

 account for the perhaps more singular circumstance that the Trayopogon 

 pratensis, L., closes at noon ? — Robert Tucker. 



Accent in Botanical Names. — Mr. H. C. Watson, on pp. 3 and 

 69 of vol. i. (1847) of his ' Cybele Britannica,' gives " for the benefit of 

 lady readers or others who are not familiar with Greek and Latin names," 

 his pronunciation of the word "Cybele." Dictionaries are on Mr. Wat- 

 son's side, yet one Virgil, no mean poet, required for his verse, not 

 Cyb-ul-e but Cyb-e-le. (See also Cyb. Brit. vol. iv. (1859), and 'Com- 

 pendium,' preface, p. vi. (1870).) Now this word is one for which there 

 are two pronunciations, I think, fairly allowable, if a Latin author may be 

 cited as a good authority for his own language ; but what amazes me and 



