1906] Harger, — Connecticut Botanical Society, — II 223 



Mr. Bissell discovered FAeocharis Engelmanni Steud., and the 

 writer, Monarda fisiidosa L. 



The third excursion on Sept. 12th was to the shore region near 

 South Norwalk under the guidance of Mr. C. H. Bissell and Mr. 

 G. P. Ells. At Roton Point Mr. Bissell showed the station for 

 Pkaseolus perennvt L. noted in Rhodora 4: 13 and, in the vicinity, 

 Baccharis halimifolia L., Arctosfaphylos Uva-ursi (L.) Spreng., Se- 

 taria versicolor Bickn. and EJipnus rohusiufi Scribn. & Sm. Here the 

 proceedings were interrupted by a shower but the time was utilized 

 by eating lunch under the shelter of a friendly veranda overlooking 

 Long Island Sound and the Norwalk Islands. After the rain the party 

 proceeded toward South Norwalk visiting the most northeasterly 

 known station for the sweet-gum tree and stations for Lopftanthus 

 nepetoides (L.) Benth. and Solidago rigida L. 

 Oxford, Conivecticut. 



Regeneration in the Leaf of Aristolochia Sipho. In 



Rhodora 5:38 (1903) I described the curious lamellar outgrowths 

 on the under surface of a leaf of Aristolochia Sipho, first observed 

 by Miss Katharine P. Loring, of Pride's Crossing, Massachusetts. 

 The leaf was believed to have been injured and the lamellae were 

 thought to be incidental to the healing of the wounds. Perrot dis- 

 covered similar structures upon the same species in France. 



Miss Loring has now placed the origin of the extraordinary growths 

 beyond dispute by careful experiment. Early in the present season 

 she selected a number of young leaves and treated them by folding 

 and pinching the blades in various directions. Most of the injuries 

 thus made were healed, and in connection with a good manv the 

 lamellae arose in accordance with expectation. Folds generally 

 parallel with the principal veins were more successful in stimulating 

 the desired growth than those made transversely to the veins. Some 

 leaves were found which had numerous small areas of excrescence, 

 the effect, as Miss Loring believed, of accidental abrasion, since these 

 leaves were situated in surroundings favorable to such an explanation. 

 At any rate, the experiment proves that the accessory lamellae may be 

 occasioned by injury. It seems to me likely that insect bites would 

 have the same effect, and that the phenomenon may be expected to 

 recur under natural conditions. — R. G. Leavitt, Ames Botanical 

 Laboratory, North Easton, Massachusetts. 



