April, 1914 .] 
The Honeysuckle Family in Ohio. 
307 
slightly gibbous; fruit a yellow berry about f inch in diameter. 
In woods. Stark, Muskingum, Franklin, Madison, Clark, 
Highland. 
11 . Lonicera dioica-L. Smoothleaf Honeysuckle. A trailing 
or shrubby plant 3 to 10 feet high; leaves oval to obovate, If to 3 
inches long, | to If inches wide, usually glaucous beneath, upper 
pair connate-perfoliate, lower ones sessile, obtuse, base truncate 
or cordate; inflorescence a terminal cluster; corolla yellowish green 
tinged with purple, gibbous, 2-lipped, glabrous without, pubescent 
within, tube f to f inch long, stamens and style exserted; fruit a 
red berry f to f inch in diameter. In dry rocky fields and along 
roadsides. Champaign, Franklin. 
Triosteum L. Horse-gentian. 
Perennial herbs with simple, terete, pubescent stems; leaves 
opposite, perfoliate or sessile, ovate, oblong, or oblanceolate, 
constricted below the middle, usually pubescent; flowers solitary 
or in clusters, bisporangiate, 2-bracted, sessile; corolla yellowish, 
green, or purple, tube narrow, gibbous at the base, campanulate; 
calyx lobes elongated, linear-lanceolate, leaf-like, persistant; 
filaments short, anthers linear, included; ovulary 3-5-locular 
containing a single ovule in each cavity; fruit a coriacious, orange 
or red drupe containing 2-3 one-seeded nutlets, embryo small. 
Key to the Species. 
1. Stem slender, hirsute pubescent, H to 3J feet high; leaves rough pube¬ 
scent, corolla yellowish. T. angustifolium. 
1. Stem erect, stout, finely glandular-pubescent, 1 to 3 feet high; leaves 
soft pubescent, some connate-perfoliate; corolla purple or dull red. 
T. perfoliatum. 
1. Triosteum angustifolium L. Yellow Horse-gentian. Stem 
slender, very pubescent, 1 to 3 feet high; leaves lanceolate to 
oblanceolate, acute to long acuminate, 2f to 5 inches long, f to If 
inches wide, tapering below the middle to an acute sessile base, 
roughly pubescent; corolla yellowish, about f inch long; flowers 
axillary, solitary. In fertile places. Cuyahoga, Warren, Clermont. 
2. Triosteum perfoliatum L. Common Horse-gentian. Stems 
If to 3f feet high, covered with short glandular hairs; leaves 
3f to 8f inches long, If to 5 inches wide, ovate to oblong-lanceo¬ 
late, acuminate, tapering to a narrow base, often somewhat con¬ 
nate, upper surface appressed pubescent to glabrous, lower quite 
pubescent; flowers not solitary, f to f inch long, corolla lobes 
rather large, somewhat spreading; stamens and style moderately 
exserted; calyx lobes linear, obtuse; fruit an orange-red drupe 
about f to f inch long. In rich soil. General. 
