296 Karl M. Wiegand and Arthur J. Eames 



2. Ceanothus L. 

 1. C. americanus L. New Jersey Tea. 



Open woodlands and thickets, in the heavier sandy or gravelly acid soils ; com- 

 mon. July. 



Abundant in the sterile acid soils of the ravine crests of the basin and on the 

 cliff crests along Cayuga Lake, and found also in many places on the more residual 

 soils of the higher hills ; absent in the pure clays and in the McLean district. 



Cent. Me. to w. Ont. and Man., southw. to Fla. and Tex. ; occasional or locally 

 common on the Coastal Plain. 



84. VITACEAE (Grape Family) 



a. Floral disk wanting; corolla expanding; leaves palmately compound. 



1. Parthenocissus 

 a. Floral disk present, of 5 glands; corolla dropping without expanding; leaves 

 simple. 2. Vitis 



1. Parthenocissus Planch. 25 



a. Plant high-climbing ; tendrils adhesive ; leaves dull pale green, glaucescent be- 

 neath ; cymes irregular, not dichotomous, panicled ; fruit about 5-7 mm. in diam. ; 

 seeds 1-3. 

 'b. Foliage glabrous. 1. P. quinque folia 



b. Foliage pubescent, at least when young. la. P. q., var. hirstita 



a. Plant resting loosely on rocks, stumps, fences, and similar places ; tendrils not 

 adhesive ; leaves deeper green, glossy above, green beneath ; cymes dichotomous ; 

 fruit about 8-10 mm. in diam. ; seeds 3-4. 

 b. Foliage glabrous. 2. P. vitacea 



b. Foliage pubescent, at least when young. 2a. P. v., var. dubia 



1. P. quinquefolia (L.) Planch. (Psedera quinquefolia of Gray's Man., ed. 7. 



Ampelopsis quinquefolia, in part, of Cayuga Fl.) Virginia Creeper. Woodbine. 



Damp talus and low woods, in soils not too light; common. June 15-July. 



Climbing up the cliffs in the ravines of the basin, and along the cliffs of Cayuga 

 Lake, where it is very characteristic ; also climbing trees in swamps and along river 

 banks. 



S. N. H. to 111., southw. to Fla. and Mex., including the Atlantic Coastal Plain. 



The adhesive part of the tendrils is not ordinarily dilated, as in the Boston ivy. 



la. P. quinquefolia (L.) Planch., var. hirsuta (Donn) Planch. 

 In situations similar to the preceding, and equally common. June 15-July. 

 Ont. and Vt. to Iowa, southw. w. of the Allegheny Mts. to N. Mex. and Mex. 

 This variety apparently passes into the typical form. 



2. P. vitacea (Knerr) Hitchc. {Psedera vitacea of authors. Ampelopsis quinque- 



folia, in part, of Cayuga Fl.) Virginia Creeper. Woodbine. 



On fences, stumps, rocks, or banks, in rich soil which is not too dry; frequent, 

 and generally distributed. June 15-July. 



Cent. Me. to Alberta, southw. to Pa., Tex., and Colo. ; less frequent or rare near 

 the coast. 



2a. P. vitacea (Knerr) Hitchc, var. dubia Rehder. (See Rhodora 10:28. 1908.) 



In situations similar to the preceding; frequent. June 15-July. 



E. U. S. 



Probably only a hairy extreme of the typical form. 



25 Parthenocissus Planch, is included among the additions adopted at Brussels in 1910 to the 

 nomina conservanda of the International Code. 



