12 WOODY PLANTS OF MANHATTAN 



buds naked, rusty pubescent Very common in woods. along fences, and 

 stone walls. 



R. Canadensis, Marsh Arb. L785. Canada Sumac. 



A small shrub with white pith, brown twigs finely pubescent above, 

 glabrescent below, live or eight-ranked, circular leal-scars raised on ;i 

 broad base, with several scattered bundle-scars. Pubescent buds naked, 

 entirely hidden by the overarching leaf-scar. The next year's catkins 

 conspicuous. Infrequent on rocky hills. 



18 AMORPHA, L. Gen. 17M7: Spec. 1753. 



Twigs pubescent A canescens. 



Twigs glabrous A.fruticosa. 



A. OANJSSCENS, N'utt. in Fraser-s Cat. 1813. Lead plant. 



A low shrub one or two feet high or occasionally as much as four feet. 

 Twigs light brown or ashy, giaorescent below, pubescent above. The 

 small leaf-scars eight-ranked, with three bundle-scars usually coalescent. 

 and minute or obsolete stipule-scars. Buds single, flattened and closely 

 appressed. Just above the bud there is a protuberance of the bark. Scales 

 about four, brown, glabrescent. Common on prairie and in upland 

 woods. 



A. FRTJTlCOSA, L. Sp,c. IT").'!. False Indigo. 



A shrub with gray, glabrous, sulfate twigs which die back at the 

 summit, semi-oval, five-ranked leaf-scars, three closelv aggregated bun- 

 dle-scars, small stipules, usually persistent at the angles of the leaf-scars. 

 Buds two superposed, the upper closely appressed; scales four or live, 

 dark-brown, glabrous. Common in moist places. 



19 ROBINIA, L. Gen. 17:r7: Spec. 1753. 



II. Pseudo- Acacia, L. Spec. 1753. Black Locust. 



Twigs light brown, glabrous, somewhat ridged. Leaf-scars triangu- 

 lar three -lobed, raised in t!ie centre; bundle-scars three; stipular spines 

 present or obsolete. Buds entirely hidden by leaf-scars, the cavity 

 beneath lined with dense ferruginous pubescence. Introduced as a shade 

 tree and escaped in places. 



i2o CERCIS, I- Gen. 17:;7: Spec. 1753. 



C. Canadensis, L. Spec. 1753. Red bud. 



A small tree witli twisted and scaly bark; dark red-brown, glabrous, 

 shining, slightly ridged twigs, two-ranked, triangular three-lobed leaf, 

 scars, three bundle-scars and stipule-scars or persistent stipules adjacent 

 above the leaf-scar. Terminal buds none; lateral small, flattened, 

 appressed, two or three superposed. Flower buds larger, oval, spread- 

 ing. Seales two or three. Common. 



