134 



bears a fringed ridge lengthwise along one side, indicating that 

 it was formed by the fusion of two adjacent peduncles. The 

 specimen shown in figure k was presented to the writer by Pro- 

 fessor Underwood in the autumn of 1907. 



Twill and Triplet Hickory Nuts. — Monstrosities in the hickory 

 are relatively rare. An embryo of Hicoria ovata {Carya alba 

 Nutt.) with three cotyledons has been described by Dr. N. L. 

 Britton (Bull. Torrey Club 7: 21. Feb. 1880) and by H. C. 

 B [eardsley] (z/^zV/. 7 : 54. May 1880). Dr. Britton has also de- 

 scribed a tree of Hicoria glabra {Carya porcina Nutt.) where most 

 of the leaves, normally pinnately compound, were simple {ibid. 

 8: 132. 1881). Dr. Arthur Hollick exhibited before the 

 Torrey Club in 1881 {ibid. 8: 60) a distorted fruit of Hicoria 

 glabra {Carya porcina) which he described as occurring year after 

 year near Court House Station, on the Staten Island Railroad. 

 Only two or three other monstrosities are noted in this genus by 

 Penzig. In 1886 Dr. Hollick (Proc. Nat. Sci. Assoc, Staten 

 Island I : 35) exhibited and described twins and triplets of 

 Hicoria alba {Carya tomentosd). "The twins," he says, "were 

 generally perfectly joined, but the triplets were separate, with the 

 sides flattened where they pressed against each other, similar to 

 chestnuts in a bur. All the nuts from the same tree were more or 

 less affected." Such a variation as this is well shown in figure/, 

 and I think no illustration of it has been published before. The 

 specimens {Hicoria alba) were collected by Mr. Percy Wilson in 

 1 90 1, near the N. Y., N. H. & H. R. R. station at Baychester, 

 New York. Dr. HoUick's description is sufficient for these 

 specimens. 



Ascidia in Clover. — The formation of pitchers in clover is so 

 common that the instance here figured (fig. /.) is referred to pri- 

 marily because it was stated by the pupil who collected the speci- 

 mens that every leaf of the plant which bore them possessed ascidia. 

 I did not have the opportunity to observe the plant personally. 

 In "Die Mutationstheorie" (i : 641), it is stated that Trifoliwii re- 

 peats in the garden forms ascidia only in spring, the pitchers pre- 

 ponderating on the first leaves of the shoot. Mulder (Tidjschr. 

 Natuur.-Gesch. en Physiol. 6: 109. 1839) describes and fig- 



