490 Answers to Queries, and Queries. 



36. ruthenica, var. 6. Bot. Mag., vol. xxxiv. tab. 1395. 



57. nepalensis ? 



58. Pallasii chinensis. Bot. Mag., vol. xlix. tab. 2531. 



59. ccelestina? 



40. pennsylvanica, of the London nurserymen. 



41. biglumis. Willd. Enum. Plant, suppl. 



42. tuberdsa. Bot. Mag. 

 45. .Xiphium. 



45. iriphioides. 

 44. persica. 



46. sp. ? Found growing on old walls near Paris, with pale yellow flowers, 



resembles I. germanica. 



47. Guldenstadw atomaria. 



I have six plants apparently different from any of the above, but as they 

 have not flowered I cannot ascertain the species I beg leave to add the 

 following species to my desiderata before sent you. (p. 118.) 



1 . /'ris livida. Sweet's Hort. Britt. 



2. JYis longiflora. Roemer and Schnltes. 



3. .Tris gracilis. Begelow, from North America. 



4. iYis lacustris. Nuttal, North America. -D. F. 



O'xalis caprina. — Dear Sir, O'xalis caprina, Botanical Magazine, 237., 

 mentioned in your account of Dropmore, at p. 260., in your last Number, 

 is the 0. cernua of Thunberg, which name, being the original one, should 

 be adopted, as has been already done by Decandolle in his Prodromus, 

 p. 696. ; and by Sweet in his Hortus Britannicus, p. 86., it is characterised 

 by having a little stem, and a many-flowered scape, with drooping yellow 

 flowers ; whereas, on the contrary, the O. caprina of Linnaeus has no stem, 

 a two to four flowered scape, and red flowers. The present O. cernua is a 

 charming subject, nearly hardy, requiring only to be planted in light soil, 

 and to be protected with a little mulch in severe weather, where it will 

 increase and flower in profusion. I have the honour to be, &c. — 

 Botanicus. January 13. 1827. 



Earthenware Pipes. — Sir, In reply to the query of your correspondent, 

 J. M. of Brighton (p. 575.), respecting the earthenware pipes, &c, used at 

 Bickley, I have to state that the pipes made use of here are not watertight, 

 nor do I suppose it possible by Roman cement, or any other means, to ren- 

 der earthenware pipes so entirely tight as to prevent any exudation of water 

 from them. 



The reservoir I consider very requisite, as by replenishing it with cold 

 water instead of the boiler, it prevents the heat of the water in the latter 

 from being checked, and consequently precludes any variation in the tem- 

 perature of the house ; a point, I imagine, of paramount importance. — T. 

 Wells. Bickly Gardens, Jan. 26. 1828. 



Disease of the Anemone, in Answer to A. B. — Sir, From the account 

 which your correspondent, A. B. of Warwick, has given in the last Num- 

 ber of the Gardener's Magazine, p. 582., of a disease which affected the 

 Anemone coronaria in his garden last year, I am inclined to think it must 

 have been occasioned by a species of iEcidium, a small parasitical fungus, 

 which I have observed for these five or six years past to attack the leaves 

 of that species of anemone in the Oxford botanic garden. The first 

 appearance of this fungus is that of lightish coloured spots on the under 

 surface of the leaves, these spots soon become small tuberculate mem- 

 branaceous bodies, or peridia, which protrude themselves through the epi- 

 dermis' of the leaf j they are at first closed, but afterwards open at the apex 

 inlo four or five, and sometimes more, broad, reflected segments ; by this 



