130 Dr. Arnott on the Genus Torreya. 



in Taimt. On the inside of the shell are two opposite longi- 

 tudinal ridges, extending from the base to within a short di- 

 stance of the summit, where they project a little from the side 

 of the shell. The projecting extremity of the ridge is perfo- 

 rated, and communicates obliquely downwards, with a fora- 

 men on the external surface of the nut. A bundle of fibres 

 in the parenchyma of the exocarp extends up on each side of 

 the nut, and appears to give off a filament at the external fo- 

 ramen, which passes through the narrow canal and emerges 

 from the orifice at the summit of the internal ridge. Respect- 

 ing the use of these canals I have as yet been unable to ascer- 

 tain anything satisfactory." 



As I have above pointed out that SprengePs genus Torreya 

 must be reduced, I feel certain that I express the general wish 

 of all botanists that this name be now appropriated to the 

 Florida tree, of which I proceed to give the following de- 

 scription. 



Torreya, Am. 

 FLORES DI01CI. 



Masc. Amentum primo snbglobosum, demum elongatum. Rachis nuda, 

 demum elongata, basi squamis siccis quadrifariam imbricatis bracteata, 

 multiflora. Squamae staminiferas, pedicellatae, subpeltata?, dimidiatae, 

 hinc antheram 4-locularem pendulam gerentes. 



Fcem. Amentum ovatum, basi ut in mare bracteatum, uniflorum. Dis- 

 cus carnosus hypogynus nullus. Ovulum erectum. Semen ovatum basi 

 squamis siccis haud grandefactis bracteatum, caeterum nudum, testa 

 crassa extus carnoso-coriacea, intus fibrosa : tegmen crustaceum, durum. 

 Albumen ruminatum. Embryo subcylindricus, brevis ; cotyledones 

 connatae. 



Arbor. Rami patentes ; ramuli distiche furcati. Folia disticha, linearia, 

 rigida, mucronato-pungentia. 



1. T. taxifolia, Arn., in Hook. I c. Plant, v.o.ined. — Taxus montana, 

 Nutt. in Journ. Ac. Sc. Phil. vii. (non Willd.) 



Hah. in Florida Media, in collibus calcareis secus ripam orientalem flu- 

 minis Appalacli prope confluentes Flint et Chattahoochie ; et ad Flat 

 Creek influentem fl. Appalach ; etiamque ad u Aspalaga" copiose. 



Arbor mediocris, undique glaberrima. Rami patentes; ramuli disticbe 

 furcati, petiolis decurrentibus angulati. Folia approximata, solitaria, di- 

 sticha, patentia ad ang. 50-70 grad,, brevissime petiolata, petiolo vix semili- 

 neam longo crassiuscula, linearia; 10 — 15 lineas longa, versus apicem cur- 

 vilineo-acutata, mucronata, mucrone longiusculo pungenti acutissimo, supra 

 convexiusculaviridianitida, subtus pallidioraglaucescentia nervo lato utrin- 

 que rubro limitato. 



