1S94. PROCEEDINGS OF THE NATIONAL MUSEUM. 411 



19. (58.) ROBINIA PSEUDACACIA, Liiinaanis. Black Locust. 



A cultivated specimen, growing in Wabash County, 111., measured 

 by Dr. Sclmeck, was 95 feet high and Hi feet in circumference. 



21. (76.) PRUNUS AMERICANA, Marshall.- Wild Plum. 



The tree from which Dr. Schneck's specimens of the wood were taken 

 measured 28 feet high and 27 inches in circumference. 



22. (78.) PRUNUS ANGUSTIFOLIA, Marshall. Chickasaw Plum. 



Dr. Schneck's specimen was 20 feet high and 21 inches in circum- 

 ference. 



23. (81.) PRUNUS SEROTINA, Ehrmann. Wild Cherry. 



A wild-cherry tree measured by Dr. Schneck was V.\~) feet high by 

 10^ feet in circumference. 



25. (87.) PYRUS CORONARIA, Linn:eu8. Crab Apple. 



Dr. Schneck's specimen was 28 feet high and 20 inches in circum- 

 ference. 



28. (96.) CRAT^GUS CRUS-GALLI, L i n n .i^ u s . Cockspur Thorn. 



Height, 32 feet; circumference, 20 inches (Schneck). 



30. (102.) CRATAEGUS TOMENTOSA, Linn a- us. Black Thorn. 



Height, 29 feet; circumference, 21 inches (Schneck). 



31. (105.) AMELANCHIER CANADENSIS, Medicus. Juno Berry. 

 Height, 38 feet ; circumference, 28 inches (Schneck). 



32. (106.) LIQUIDAMBAR STYRACIFLUA, Linna'us. Sweet Gum. 



Articles describing this species refer to the corky excrescences to 

 the branchlets as if tliey w^ere a constant feature. So far is this from 

 being true that it is probably no exaggeration to say tliat not 5 per 

 cent, of the total number of trees possess them, or at least they are not 

 conspicuously developed in a greater x^roportion. Indeed, so far as my 

 observation goes (and I liave examined many hundred trees), these 

 excrescences are decidedly exceptional. 



37. (12-1.) VIBURNUM PRUNIFOLIUM, Linnji>us. Black Haw. 

 Height, 21 feet; circumference, 11 inches (Schneck). 



41. (154.) FRAXINUS PUBESCENS, Lamarck. Red Ash. 

 Height, 138 feet; circumference, 16 feet (Schneck). 



44.(157.) FRAXINUS VIRIDIS, Michaux, f. Green Ash. 



Height, 92 feet; circumference, 5 feet (Schneck). 



