806 



from the preceding No.). " Botany of the Niger Expedition," by Sir 

 William and Dr. Hooker. " Observations sur TAmoreuxia," &c., 

 &c., by Dr. Planchon. " On the Economy of the Roots of Thesium 

 linophyllnm," by William Mitten, Esq. " Description of New 

 Lichens," by Dr. Thomas Taylor. 



No. 64, Contents : " New Lichens," by Dr. Taylor (continued 

 from the preceding No.). " Notes of Algag, observed at various alti- 

 tudes in Aberdeenshire," by Dr. Dickie. " Botanical Information," 

 being an announcement of the death of Delessert, and a continua- 

 tion of the "Catalogue of Mr. Geyer's collection of plants gathered 

 in the Upper Missouri," &c. 



The Thorea ramosissima was discovered by Mr. William Mc. Ivor, 

 of the Kew Gardens, "in the bed of the river, above Walton Bridge, 

 at low water exposed to view abundantly, and where covered 

 with clear water showing itself as a vast gelatinous mass of a pur- 

 plish-black colour, yet exhibiting its filamentous internal structure in 

 the same way as the Batrachosperma do, when seen with the naked 

 eye." (No. 61, p. 31). 



Although not relating to a British species, the following account of 

 a Brazilian representative of a British genus is curious, and worth 

 extracting. The account of it is introduced into the Journal from 

 Gardner's Travels : " We shall lastly mention the beautiful and sin- 

 gular Utricularia nelumbifolia (Gard.), remarkable no less for its 

 large size, 2 to 2^^ feet high, than for its place of growth. Like our 

 bladder-roots, it is aquatic, but is only found ' growing in the water 

 which collects in the hollow bases of the leaves of a large Tillandsia, 

 that inhabits abundantly an arid, rocky part of the Organ Mountains, 

 at an elevation of about 5000 feet above the level of the sea. Besides 

 the ordinary method, by seed, the Utricularia is propagated by run- 

 ners, which it throws out from the base of the flower-stem ; this run- 

 ner is always found directing itself towards the nearest Tillandsia, 

 when it inserts its point in the water, and gives origin to a new plant, 

 which, in its turn, emits another shoot. In this manner not less than 

 six plants may be seen united, each deriving support from the water 

 contained in as many separate plants of Tillandsia.' In our plants, 

 again, there are no leaves ; but bladders (as the name implies) among 

 the roots, which enable the plant to float and bring its blossoms above 

 the surface of the water. In the Brazilian species there are the blad- 

 dered roots ; and, besides, peltate leaves, three inches across, on 

 long footstalks ; while the flower-stem bears numerous large purple 

 flowers." (No. 62, p. 57). 



