90 JOURNAL OP THE 



trees were found in different places, but always near 

 the coast. 



O. cinerca x O. aqtcatica. — The leaves 2.5 to 3 inches 

 lono-, 1.5 to 2 inches broad, are broadl}^ spatulate; round- 

 ed or three lobed at the summit; rarely rounded at base. 

 Above they are smooth; below varying- from the thick, 

 white pubescence of cinerea to nearly sniooth, with 

 small tufts of coarse pubescence in the axils of the 

 veins. The venation is mostly obscure. They are 

 small trees, 20 to 25 feet in height, with drooping" 

 branches and rather sniooth g^ray bark. The twig-s are 

 pubescent save where the pubescence has worn off. On 

 December 2 the trees are nearly naked of leaves, the 

 leaves still persistent being- yellow, while type trees of 

 aquatica are g-reen. The nut is globose, brown, not rib- 

 bed, tomentose, as are the scales of the shallow or deep 

 cup; cups persistent on the twigs as those of aquatica 

 frequently are. Several specimens of this hybrid were 

 seen, all near the coast. 



Q. petiolaris . — Q. cinerea x Q. tinctoria f — The 

 leaves are oblong or elliptical, 4 to 6 inches long and 

 1.5 to 2 inches broad; sinuate or crenate on the marg-ins; 

 mostly three lobed and dilated at the summit; truncate 

 or subcordate at base. The lobes at the summit are 

 usually bristle-tipped. Leaves are smooth above or 

 with glandular, septate hairs along the midrib; the 

 under surface covered with a close, brownish tomen- 

 tuni, wearing away with age; tufts of coarse pubes- 

 cence in the axils of the primary veins. The venation 

 is that of the black oaks (tinctoria and coccinea) with 

 4 to 6 pairs of prominent, impressed primary veins. 

 The petiole is one-half inch long. The long buds, 

 .3 inch, are lanceolate. The slender twig's are covered 

 with the brownish tomentum of cinerea. Five or six 



