12 WOODY PLANTS OF MANHATTAN 



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

 stone walls. 



R. Canadensis, Marsh Arb. 1785. Canada Sumac. 



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

 glabrescent below, live or eight-ranked, circular leaf-scars raised on a 

 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. 1737: Spec. 1763. 



Twigs pubescent A canesct its. 



Twigs glabrous A.fruticosa. 



A. CANESCENS, Mutt, in Eraser'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, glabrescent 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. FRUTICOSA, L. So.c. 1753. False Indigo. 



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

 summit, semi-oval, five-ranked leaf-scars, three closely 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 five, 

 dark-brown, glabrous. Common in moist places. 



pi ROBINIA, L. Gen. 17: J .7: Spec. 17".:;. 



R. Pseitdo- Acacia, L. Spec. 17">:;. Black Locust. 



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

 lar three-lobed, raised in the 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 place-. 



20 CERCIS, L. (it'n. 17:;7: Spec. 17".:;. 



C. Canadensis, L. .^pec. 17-53. Bed bud. 



A small tree with 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. Scales two or three. Common. 



