1864.] lawson's botanical notes. 7 



12. Acer Negundo, foliis variegatis. — Tn the Verzeichniss 

 of our friend Mr. J. N. Haage, of Erfurt in Prussia, we observe a 

 drawing and description of a beautiful variegated or silver- leaved 

 variety of the Acer Negundo, — or as it ought rather to be called, 

 Negundo ace7vides. This elegant variety will form a welcome 

 addition to the list of American ornamental trees. ^ It is for sale 

 in the European nurseries. 



13. Canadian species of Equisetum. — The following are 

 described in Trans. Bot. Soc. Ed. : E. sylvatimm ; E. umhrosum ; 

 E. arvense; E. arvense, var. granlaturn ; (a new and remarkable 

 form from the Trent, near Trenton) ; E. Telmateja ; E. limosum ; 

 E. hyemale ; E. variegatum ; E. schyoides ; and E. sc'rpoides, 

 var. minor^ the last from Gaspe (Mr. Robt. Bell). E. palustre 

 is understood to grow in the northern parts of Canada. 



14. Sequoia Lawsoniana. — Messrs P. Lawson & Son of 

 Edinburirh have raised a new Conifer from California seeds 

 which has been named Sequoia Lawsoniana. 



15. Yucca filamentosa. — This fine southern plant is quite 

 hardy in Canada. Its specific name refers to the numerous threads- 

 or filaments which hang from the margins of the leaves. 



10. Clerodendron Thomsons, Balfour, (Mrs. Thompson's 

 Clerodendron). This handsome plant was transmitted by the 

 Rev. AV. C. Thompson from Old Calabar, on the west coast of 

 Africa, and flowered at the Botanic Garden of Edinburgh, in 

 December, 1861. It is a shrubby twining plant, producing 

 showy flowers, and will soon be seen in all our hot-houses. 

 Prof. Balfour gave a fall description of it some time ago, 

 accompanied by a beautiful drawing from the pencil of Dr. 

 Greville. (Trans. Bot. Soc. Edin., vol. vii, p. 2.) It had not 

 then shown fruit, which however has been subsequently produced, 

 and is now described, with elegant drawings. Prof. Balfour states 

 that the fruit consists of four achens, which when ripe assume a 

 shining black color externally. Between the achens, and attached 

 to their surface, but not appearing on the peripheral side, there 

 is a bright red cellular coat, which enlarges as the fruit ripens, 

 separating the achens, which ultimately appear as four distinct 

 seed-vessels, covered on their upper surface (commissure), with a 

 succulent rugose mass of cells of a bright scarlet color. The 

 surface oil-oflobule-bearino: cells are described as of a glandular 

 nature. We have here apparently a beautiful example of glan- 



