Lonicera 



Caprifoliaceae 



889 



"50 



Map 1954 

 Lonicera dioica 

 var glaucescens (Rydb.l Butters 



50 



Map 1955 



Lonicera prolifera (Kirchner) Rehd 



Upper surface of disk not glaucous; disk usually somewhat rhombic or elliptic, 

 usually tapering at the ends or sometimes rounded; leaves usually of an 

 oblong type; flowers generally more or less purplish and usually glabrous 

 or nearly so on the outside, or entirely pale yellow and more or less pubes- 

 cent; whorls of flowers approximate. 

 Leaves nearly or quite glabrous beneath; outside of corolla glabrous or nearly 



so; corolla more or less purplish 3. L. dioica. 



Leaves pubescent beneath; outside of corolla villous; corolla pale yellow, rarely 



purplish 3a. L. dioica var. glaucescens. 



Upper surface of disk glaucous; disk usually of an orbicular type with rounded 

 ends; leaves more of an oval type; flowers always pale yellow, glabrous 

 without; whorls of flowers usually separated and forming a short spike.. . . 

 4. L. prolifera. 



1. Lonicera canadensis Marsh. American Fly Honeysuckle. Map 

 1951. This species has been reported from Pine Station, Lake County, and 

 I found a single specimen in La Porte County. This is one of our rarest 

 shrubs and may soon be extinct. 



E. Que. to Sask., southw. to Pa., Ind., Wis., and Minn. 



2. Lonicera japonica Thunb. Japanese Honeysuckle. Map 1952. 

 This species has been cultivated for a long time and is still common in 

 cultivation. Where it is planted it persists under the most adverse circum- 

 stances and usually spreads rapidly by rootshoots. I have seen it only twice 

 where I felt sure that it was an escape from seed. No doubt it is perma- 

 nently established in Indiana because the task of destroying it is too great. 



Nat. of e. Asia; escaped in Conn, to Ind., southw. to Fla. 



3. Lonicera dioica L. Limber Honeysuckle. Map 1953. This species is 

 restricted mostly to the lake area where it is infrequent mostly in swampy 

 and springy places and is absent or very rare south of the lake area. 



Maine to Man., southw. to Ga. and Nebr. 



3a. Lonicera dioica var. glaucescens (Rydb.) Butters. {Lonicera glau- 

 cescens Rydb.) Map 1954. Infrequent in the northeastern part of the state 

 in most soil, usually about swamps and even in bogs. South of this area it 



