107 



m, A. Br., and C Preissii^ A. Br., (both of which Prof. Braun in- 

 cludes under C. Dichopitys)^ and more closely approaches that of C. 

 Ecklonii from Africa. Should this prove distinct, I propose to name 



it C. Ciirtissii, 



All of these Charae are always gymnopodous, that is the first inter- 

 node of the leaf is naked. The variations in the cortication of the 

 other internodes are great ; this naked internode is usually quite as 

 long as any of the others, thus differing from the Gymnopodae of the 

 Diplostephanae section. The development of the stipules serves to 

 distinguish one from the other; besides, the stem cortication of the 

 latter plants is triplostichous while that of the former is diplostichous. 



T\-\Q^tGymnopodae of the Diplostephanae section of the genus Chara 

 are also peculiar to America as compared with Europe, and common 

 to America and Asia. Not a single species is known in Europe ; while 

 in America, North and South, the islands of the Pacific, Asia and 

 Africa, there are numerous species and varieties. In the United 

 States we find C. sejuncta, A. Br., two varieties ; C gy?nnopus var. 

 elegans, A. Br.; var. Humboldtii, K.'^x.\ var. trichacantha, K,^t,\ 

 var. Michauxii, A. Br.; var. conjugens, A. Br. In the Sandwich 

 Islands, var. Meyenii In India, var. Ceylonica, In Africa, var. De- 

 lileu In some of the West India Islands, var. Berteroi, besides the 

 following allied species : C Javanica, A. Br., C. inconsians, A. Br. 

 Central America; C. Criigeria?ia A. Br., Trinidad; C. Angolensis, A. 

 Br., and C. Commersonii, A. Br., Africa. It is interesting to note 

 that this species, with its sub-species and varieties, is widely known 



except in Europe. 



For the determination of other forms we find ourselves obliged 



■ 



to consult the East. 



T. F. Allen; 



« 



86. Large Trees near New York City.— The following trees of 



considerable size were measured during the month of July. The cir- 

 cumferences are nothing extraordinary for the respective species in 

 their most favored localities, but are perhaps as great as any to be 

 found in this neighborhood. In the town of Bayonne, Hudson Co., 

 N. J., on the New Bergen Road, just south of the M. & E. Canal bridge, 

 there is a remarkable group of Castanea vesca, L., var. Americana, 

 Michx., one i6 feet, two over 12 feet, and seven over 10 feet in circum- 

 ference at 5 feet from the ground. They have been almost entirely 

 deprived of their bark, and all are dead or dying; but the trunks 



show no signs of decay. . . ' 



Popidus monilifera, Ait. A beautiful tree, 14 feet in circumfer- 

 ence, measured at 5 feet from the ground, adorns the lawn of Philip 

 S. Crook, Jr., at the corner of Flatbush and Caton Avenues, m the 

 village of Flatbush, Kings Co., N. Y. Some years since it was struck 

 by lightning, but shows little sign of injury. The owner, being a 

 gentleman of taste, saved the tree by the application of a great metal 

 band around the base of the lower limbs. 



Juglans jiigra, L. A specimen 12 feet in circumference, on Mr. 

 Crook's lawn, "makes a worthy fellow of the Popidus. In the forks 

 of its branches, at 20 feet from the ground, there has sprung up a 

 bush of Ribes rubrum. 



