28 THE PLANT WORLD. 



pratensis, Populiis alba, Reseda lutea, Robinia hispida, Robinia Pseuda- 

 cacia, Robinia viscosa, Sagittaria latifolia, Stacliys palustris, Teucrijim 

 Caiiadense, Therniopsis Caroliniana, Tiissilago Farfara, Titssilago 

 Petasitcs. 



In our botanic garden, to keep some of these plants within reason- 

 able bounds, they were placed each within a piece of old smoke-stack 

 a foot and a half in diameter and about two feet deep. Some of the 

 plants do very well this way, but several of them leave the center va- 

 cant and run around the edge of the enclosure, reininding one of un- 

 easy animals in a cage, while the Canada thistle thrives, putting its 

 roots down deep into the soil. The first you know, these roots of the 

 thistle run under the iron hoop and new plants pop up serenely from 

 two to five feet distant. Plants that run around the margin are 

 Stachys, Teucrium, Aristolochia Cleniaiitis, while feeble plants of 

 Linaria Linaria, though in rich earth, failed utterly last season. We 

 had to change the soil and put in new plants to keep the stock good. 

 They are impatient of restraint and want to ramble about at will, as 

 plants almost seem to have a will. 



The following twelve perennials among others in the garden have 

 failed more or less or died, especially in the middle of the patch: 



Boltonia asteroides. Coreopsis lanceolata, Gecoma Jicderacea, Heli- 

 antlius gigantcus, HeliantJius grosse-scrratus, Marubium vulgare, Rud- 

 beckia speciosa, ScropJmlaria Marylandica, SpatJiyema fatida, Uvula- 

 ria perfoliata, Viola lanceolata, Vleckia ( Lophanthus) nepetoides, 



(TO BE CONCLUDED.) 



Toward the latter part of July last, in company with several bo- 

 tanical friends, I took a short field excursion to a neighboring marsh 

 always reported to be superb collecting ground, and such indeed we 

 found it. Among other finds I secured plenty of Sundew {Drosera 

 rotitndifolia ), which on returning home I placed in one of my artificial 

 bogs. It soon blossomed and matured fruit, which was followed by a 

 period of rest. The leaves had disappeared — nothing of the plant in 

 sight but the ripened seed stalks, and I supposed the plants were all 

 dead. A few days ago I noticed numerous little colonies of sundews 

 appearing all over the bog. At first I supposed them to be seedlings, 

 but on a closer inspection I found most of them proceeded from old 

 leaves, generally from the upper surface. In a few instances they ap- 

 peared from the under surface and edge of the leaf, like the Bryophyl- 

 Inin. This behavior was a surprise to me, as I have neither read nor 

 heard of an instance before where the Drosera develops new plants 

 from buds formed on the old leaves. But I have the clear evidence 

 before me that they do. — Jas. A, Graves, SusqueJianna, Pa. 



