7G 



Saxifeagaceae. 



Fendleba. 

 (Family Saxifragaceae). 



Shrubs, intricately branched: 

 deciduous. Twigs squarish or 

 round, soon fluted or ribbed, some- 

 times almost spine-tipped, rather 

 slender, at first gray-puberulent: 

 pith small, rounded, white, contin- 

 uous. Buds rather small, solitary, 

 sessile, with 1 or 2 pairs of white- 

 hairy scales, nearly or quite con- 

 cealed by the much-raised leaf- 

 scar. Leaf-scars opposite, trun- 

 cately linear: bundle-traces 3, 

 minute: stipule-scars lacking, but 

 the leaf-scars connected by a 

 transverse line. 



The winter-characters of Fend- 

 lera rupicola are pictured by 

 Schneider, f. 190. 



The persistent base of the peti- 

 ole with the narrow leaf-scar 

 running across its top, in Fend- 

 lera, finds an extended parallel in Philadelphus, where the 

 leaf-scar is broad. In these cases it is to be seen that the 

 leaf-scar really has been formed by a similar but more ex- 

 tended oblique abscission through the enlarged base of the 

 petiole. Among many comparative publications on such ar- 

 ticular membranes or articular tegments is an excellent pa- 

 per by Hildebrand, in volume 13 of the Botanisches Central- 

 blatt. Other good examples of articular membranes are af- 

 forded by such Leguminosae as Robinia and Sophora. 

 Twigs gray or buff, stiff. (1). F. rupicola. 



Twigs red-brown, flexible. F. tomentella. 



