28 Notes on Botany — Hm$eij. 



fall, in October, I took up and potted a fine specimen of the var. dis- 

 sectum. Alxdit the middle of December the fertile frond withered, and 

 I removed it. The sterile frond, on the other hand, has remained un- 

 changed until this time (January 16), and 1 do not doubt that it is 

 hardy. I therefore conclude that the sterile frond of Botnjch'mm 

 lunar ioides is hardy. Like the Aqolenewn ruta-vmravia, which is 

 hardy, the sterile frond of B. lunarioides will perish before or at the 

 time the new frond springs up. 



Ophioglossum vulgatum. — On removing some roots of this fern 

 from the ground, last fall, into pots, I observed that the new frond had 

 already started, and was about one half inch in length. They have 

 rem;iined, up to this date, just as they were when they were removed 

 from the ground. I suppose this is a habit of the species. 



The Botanical Directory for North America and the West 

 Indies. — This is the title of a publication giving the names of all the 

 working botanists in the territory embraced. It has just been issued 

 as part of one of the numbers of the Bulletin of the Torrey Botanical 

 Society of New York City. It gives, first, the names and the specialty, if 

 any, of the botanists knoAvn to the editor, with the name of the State 

 appended in which he resides ; then follows another list ot the names, 

 under the States, with full postoffice address. 



List of Trees and Shrubs of Ohio, in the "Report of the Ohio 

 Agricultural Society for the year 1872." — This list, made out by Prof. 

 Tlussey, is accompanied by an address by the same person on our 

 Forest Trees, their Distribution, Age, etc. The idea is set forth and 

 illustrated in the address, that the distribution of our trees depends, in 

 great measure, upon such circumstances as favor the germination of 

 the seed and the growth of the young plant for one or more seasons. 

 Such trees as have a vigorous growth in their early stages are more 

 widely disseminated. Those that are less so, but only flourish when 

 young in the shade of other trees, or in favorable seasons, are not so 

 widely disseminated. Uniformity of species is regarded as indicatmg 

 a comparatively recent forest ; a great variety, a more ancient forest. 

 A practical inference is that the most of our forest trees will flourish 

 in places where they are not now found, as in prairies and the western 

 plains, if the young trees are cultivated a few years from the seed. 

 The tree will grow under csltivation where the seed will not germi- 

 nate, and if it germinates, where it will not grow without care at first. 

 We want more exact information in regard to the lines which bound 

 species. The publication of correct local lists of plants is greatly 

 desired by botanists. 



