Page:Journal of botany, British and foreign, Volume 9 (1871).djvu/64

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Queries. — 8. What is the use of the white hairs on the inside of the corolla of the Foxglove ?

9. Seeing that yellow flowers scarcely ever have white varieties, what is the explanation of the curious " fading " of the golden petals of many species of Ranunculus to snow-white?

10. In herbariums, when there is change of colour in flowers, it is or- dinarily to a mahogany brown. Why do the crimson Erica cinerea, Lythrum Salicaria, Lagerstrcemia, and others, turn purple ?

11. Are the leaves o{ Fraxinus excelsior simple or compound? I have found young ones with the leaflets perfectly confluent, as in an ordinary pinnatifid leaf; but, when the foliage falls in autumn, every leaflet disarticu- lates from the rachis. Can a simple leaf change into a compound one ?

12. What measure is there for the belief held by some that the leaves of Ranunculus Lingua, R. Flammula, and, I suppose, all the other linear- leaved species in this genus, are only phyllodia ? Will the same reasoning apply to the leaves of Bupleurmn ?

13. What is the internal and highly elastic thread in the stems of many little Caryophyllacece, also in Veronica Iwderifolia, Claytonia, etc. ? and what is the purpose of the elasticity ?

14. Does the foliage of the common Asparagus consist of true leaves ? If not, what are those innumerable green bfistles ?

15. Coltsfoot, when in bloom, has its capitulum quite erect. Subse- quently, while the fruit is ripening, it is pendulous. Eventually, when the beautiful globe of silky pappus is developed, it is erect again. What is the physiological cause of the middle condition ?

16. Caprifoliacece are said to be distinguished from Cinchonacece by the want of stipules. What are the organs which every learner calls stipules on the petioles of Viburnum Opulus ?

17. Why is Rumex said to have a single perianth, in two whorls, when, to aU appearance, the flower is formed of a distinct calyx and corolla, — the six pieces similar in colour and texture, as in the Rushes and Lilies ? — L. H. Gkindon.

18. Cypripedium Calceolus. — Prof. H. G. Eeichenbach, in describ- ing a new Orchis in the ' Gardeners' Chronicle' (1870), p. 1342, says a propos of the extirpation of Orchideae, " If we had the acquaintance ol some magistrates in Ocana we would induce them to adopt the Yorkshire system, where the peasants are told to prevent the extirpation of Cypri- pedium Calceolus in a not very civil but very successful manner." What is this system or manner ? — Henry Trimen.



The following is an alphabetical catalogue of the new genera and spe- cies published during the past year (1870) in these periodicals : — 'Bo- tanical Magazine,' ' Floral Magazine,' ' Gardener's Chronicle,' Hooker's ' Icones Plantarum,' ' Journal of Botany,' and ' Refugium Botanicum.' The ' Journal of the Linnean Society,' and proceedings of other scientiflc

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