M. L. Garreau on the Nitrogenous Matter of Plants. 33 



bus, subtus pallidioribus ; racemis terminalibus simplicibus, 4-9-floris, 

 pedicellis elongatis bibracteolatis, bracteolis linearibus acutis, petiolis 

 peclunculis calycibusque purpurascentibus, corollis aurantiacis, intus 

 versus basin filamentisque villosis, ovario glabro. Species unica : 



Campsidium Ohilense, Reiss. et Seem. MSS. in Herb. Vindob. ; 

 Seem, in Bonplandia, vol. x. p. 147, t. ] 1. 



Tecoma Guarume, Hook, in Bot. Mag. t. 4896, in adnot. (non 

 DeCand.). 



Nomen vernaculum Chiloense " Pilpil Boqui," teste Bridges. 



Geographical Distribution. — Chiloe (Bridges ! W. Lobb ! 

 n. 474, King !); Island of Huafo, lat. 44° S. (Eights ! in Herb. 

 Hook.) ; Arique, near Valdivia (Lechler ! Plant. Chil. n. 671). 



This beautiful plant seems to be rather common between lati- 

 tudes 40° and 44° S., and climbs over trees with a height of 

 40-50 feet. Nevertheless it is not mentioned in Gay's f Flora 

 of Chile/ and was thought identical with Tecoma ? Guarume 

 (Bignonia alata, Pav.) by Sir William Hooker. The authentic 

 specimens of Bignonia alata in the Berlin Herbarium prove, how- 

 ever, to be identical with Tecomaria fulva, Seem. (Tecoma fulva, 

 DeCand.); and the plant to which Sir W. J. Hooker alludes is 

 the type of an entirely new genus, allied in habit to Campsis, 

 Lour., but differing from that genus in the shape of the corolla 

 and parallel, not divaricate, anthers. Campsidium has, however, 

 no rooting branches, climber though it be, nor is it winding 

 like Pandorea, nor furnished with tendrils like most climbing 

 species peculiar to America. 



VI. — On the Functions of the Nitrogenous Matter of Plants. 

 By M. L. Garreau *. 



The numerous researches prosecuted of late years respecting 

 the organic elements of plants, whilst on the one hand adding to 

 our acquaintance with the structure, composition, and relations 

 of their tissues, have, on the other, suggested to several botanists 

 various theories regarding their evolution and their functions. 

 But the physiology of plants being, like that of animals, insepa- 

 rably dependent upon the knowledge of their organs, and this 

 knowledge being far from thoroughly understood, the conse- 

 quence is that every fresh discovery in their organization is fol- 

 lowed by a new interpretation of some question or other in their 

 physiological mechanism. 



The cell, regarded by most botanists as the primitive element 

 of vegetable organization, is represented as a nearly independent 



* Translated by Dr. Arlidge, from the ' Annales des Sciences Naturelles,' 

 tome xiii. 1860, p. 189. 



Ann. $ Mag. N. Hist. Ser. 3. Vol. x. 3 



