546 REPORT OF NEW JERSEY STATE MUSEUM, 



Order RHAMNALES. 



Family RHAMNACE^. Buck-thorns. 

 Key to the Species. 



a. Fruit a berry, flowers greenish, in clusters. [Rhamus cathartica L.]* 



aa. Fruit dry, splitting into three nutlets, flowers white in terminal, umbel- 

 like clusters, forming a showy panicle. Ceanothus americanus, p. 546 



CEANOTHUS L. 



Ceanothus americanus L. New Jersey Tea. 



Ceanothus americanus Linnseus, Sp. PI. 195. 1753 [Virginia and Carolina]. 

 — Barton, Fl. Phila. I. 126. 1818. — Knieskern 11. — Britton yy. 



In open woods ; commion in the northern counties and occa- 

 sional southward in the Middle and Cape May districts. 



Fl. — Early June to early July. Fr. — »Mid-July to late August. 



Middle District. — New Egypt, Pemberton (Bassett), Medford (S), Had- 

 donfield (S), Westville, Lawnside (S), Woodbury (NB), Yorktown. 

 Cape May.— Cold Spring. 



Family VITACE^. Grapes. 



Key to the Species. 



a. Leaves digitate, 5-7 foliate. Psedera quinquefolia, p. 548 



aa. Leaves not compound, entire or deeply lobed. 



b. Leaves velvety-tomentose on the under surface. 



c. A tendril or branch of inflorescence opposite each of several suc- 

 cessive leaves. Vitis lahrusca, p. 546 

 cc. Tendrils intermittent, none opposite each third leaf. 



V. cestivalis, p. 547 

 bb. Leaves glabrous, or short-hairy on the veins beneath. 



c. Teeth of leaves narrowly deltoid or even lanceolate, sharply acumi- 

 nate, often falcate ; berries blue with a bloom, stipules over 4 mm. 

 long. V. vulpina, p. 547 



cc. Teeth of leaves broadly deltoid, cuspidate ; berries black and shin- 

 ing, stipules 4 mm. long or less. V . cordifolia, p. 547 



VITIS L. 



Vitis labrusca L. Fox Grape. 



Vitis Labrusca Linnseus, Sp. PI. 203. 1753 [North America]. — Knieskern 11. 

 — Britton 77. 



* Buckthorn, escaped from cultivation in some places. 



