Jeffry, and Torrey . — Transitional Herbaceous Dicotyledons . 249 
PLATE XIII. 
Fig. 26. Total transverse section of the nodal region of the woody herb Gerardia, showing the 
presence of two foliar rays corresponding to the two opposite leaves. The ray on the lower side has 
just begun to appear. 
Fig. 27. Transverse section of the foliar ray shown in the upper region of Fig. 26, more highly 
magnified. 
Fig. 28. Transverse section of the foliar ray in Solidago canadensis , from the base of the aerial 
axis. 
Fig. 29. Tangential section of the foliar ray of .S’, canadensis , from the thicker region of the 
aerial stem. 
Fig. 30. Radial section of the foliar ray from the woody region of the aerial stem of S. 
canadensis. 
Fig. 31. Tangential section of the foliar ray of the lower region of the aerial axis of Helianlhus 
tuberosus. 
Fig. 32. Tangential section from a lower aerial node of Helianthus annuus , showing the 
organization of the foliar ray. The magnification is the same as in Fig. 31. 
