568 General Notices. 



3474 SK bristle-pointed-^. O? «. ? 30 or' | au " "tf.P E^nk^of the pkSna*" Mil 



111 habit it much resembles N. gracilis and N. filicaulis ; but 

 is essentially distinguished from these by its broad, orbicular, 

 not compressed stigma. Corolla white, suffused with purple, 

 with the mouth of a deeper colour. A native of sandy plains 

 on the banks of the Parana ; from seed whence, sent by Mr. 

 Tweedie, the plant figured has been raised by Mr. Neill of 

 Canonmills, near Edinburgh. The plant thrives in a mixture of 

 peat and sand j and the branches, lying upon the soil, root freely 

 at every joint. (The British Flower- Garden, Sept.) 



CCXXVI. Hydrophyllea;. 



A7fi "MT^TVTO'T*TTI T A 

 S937a insignis Bentk. ' showy O -* or 1| au B California 1833. S r.m Bot. reg. 1713 



A procumbent annual species, with blue corollas above an 

 inch in diameter. It has larger flowers than N. phacelioides, its 

 habit is less straggling than that of N. parviflora and N. pedun- 

 culitis. N. insignis is stated to require a rich soil, not damp, 

 and a situation fully exposed to the sun ; and to be protected 

 carefully from wet when forming its seeds, or they will not ripen. 

 It is figured from the London Horticultural Society's garden ; 

 where " it has produced its seeds very sparingly, with all the 

 care that could be given to it." (Bot. Beg., Oct.) 



MONOCOTYLEDONOUS PLANTS. 



CCXL, OrchidecE. 



2530. C ATA SEPTUM. 

 f22657 semiapiJrtum Hook, half-open-^tutf. £ ES or £ n.f G Brazil 1824t D p,m.s Bot. reg. 1708 



Its flowers are not so showy as those of C. tridentatum ; but 

 they are peculiarly fragrant, a quality of which all the other 

 known species are destitute. When the plant is in rapid growth, 

 it will thrive the better if its roots are actually allowed to im- 

 merse themselves in water. (Bot. Beg., Oct.) 



Art. III. General Notkes. 



THE extreme Fibrils of the Roots of Plants, it has been asserted by Duhamel 

 and others, die annually in the winter season, and are renovated in the spring 

 in the same manner as leaves. Mr. Knight admits the position to be true in 

 regard to the fibrils of bulb roots, but denies it in regard to the fibrils of the 

 roots of trees. To ascertain the point, the Rev. P. Keith took up portions 

 of the roots of different plants, chiefly trees, at different seasons of the winter, 

 and, as a result, he concludes that " the root is never wholly denuded of its 

 fibrils or spongioles, as the branches are denuded of their leaves. A partial 

 decay, with a partial renovation, of these organs, seems to be occurring at all 

 seasons; but a total denudation of the root occurs at no season. If, with 

 Mr. Knight, we admit of a total denudation of bulbous roots, I think it wi41 

 not go beyond such as are taken up out of the soil for the winter; for, if the 

 bulb is allowed to remain in the earth, it is to be believed that new fibrils 



