215 BOTANICAL GAZETTE. 



Growing with No. 35. Found as far North as the line of the Ft. 

 Smith and Little Rock R. R. 



35. Osinimda cinnainomca, L. — Swamps of South Arkansas, also on 

 cliffs of sandstone in the extreme N. W. part of the State upon White 

 River. 



ORDER OPHIOGLOSSACE^. 



36. Botrychiiim ternatum, Swurtz, var. hinarioides, Milde. — Said to 

 occur in the rich woods of Ark. We have not found it. 



37. Botrychiiim ternatum, Swartz, var. obliquum, Milde. — Occurs in 

 the low rich woods of S. W. Ark. The Arkansas form has rather 

 broad sterile fronds. We have specimens from S. W. Ark. collected 

 by Miss Mary Jcsnes, of Montgomery Co. 



38. Botrychiiim Virgi/iicum, Swartz. — Common in the rich shaded 

 copses of the upland portion of Ark. 



39. OpJiioglossum vitlgatum, L. — In N. W. Arkansas upon lime- 

 stone ledges 200 ft. above the valleys, also wet woods in rich soil. 



Some Arkansas Trees.— Mr. Warder will find in the August 

 and September numbers of the Gazette for 1880 an account of some 

 specimens of Castanca piunila occuring in Hempstead County, which 

 exceed in size those he found near Hot Springs. Specimens two feet 

 in diameter are found in N. W. Ark., near Fayetteville. I am in- 

 formed that a few specimens of C. vesca occur 'in E. Ark. , but 

 whether they are introduced or spontaneous I am unable to decide 

 having never seen the specimens growing. I should like to know 

 more about the occurrence of Finns aiistralis in Ark. I did not find it 

 while in S. Ark. last summer, but P. mitis extends as far South as the 

 Texan border. Should also like to know whether Magnolia grandi- 

 flora grows spontaneously about Malvern. 



M. macrophylla and tripctala are common in Garland and adjoin- 

 ing counties, but I did not find M. grandiflora spontaneous. Ilex 

 opaca grows much farther N. in Ark. than Malvern. It is common 

 about Hot Springs. 



I have passed from the N. to the S. part of Ark. in order to ob- 

 serve the change of tree covering, and find that it is governed by alti- 

 tude, moisture, soil and other physical conditions, and that one can 

 pass from one geological horizon to another and not be aware of it by 

 a change in vegetation. 



It is true that Q. aquatica and Pliellos are not found in the N. part 

 of the State, but they extend on the sub- carboniferous as far as the 

 mountains about Ft. Smith, the distribution being termed by the phys- 

 ical rather than geological conditions. The same may be said of Ilex 

 opaca arid other species. 



One could go from Malvern through Magnet Cove to Hot Springs 

 and from the vegetation never dream he was passing across such a re- 

 markable metamorphic region. 



Q. Pliellos and aquatica might be added to the Oaks of Garland 

 Co., as they grow about Hot Springs. 



This is not written in the spirit of criticism, but that I may know 

 more about some species spoken of by Mr. Warder in March Gazetik, 

 p. 188. — F. L. Harvey, Ark. Ind. Univ., Fayetteville, Ark. 



