112 Spriiio Flora of Ohio. 



to linear, (i-^O Hues long, the radical oval or oblong, less rosulate, not 

 ciliate. 



Hous-to'-ni-a ten-u-i-fo'-li-a Nutt. (//. purpurea var. tenuifolia Gr.) 

 Houstonia. — Slender, diffuse, 6-12 in. high, with loose inflorescence and 

 almost filiform branches and peduncles; cauline leaves all linear, 

 hardly over 1 line wide. 



2. Genus CEPH-A-LAN'-THUS. — Calyx-tube inversely pyramidal, 

 the limb 4-toothe(l; corolla tuljular, flowers in spherical, peduncled 

 heads, white; shrubs, with ovate or lanceolate-oblong leaves. 



Ceph-a-lan'-thus oc-ci-den-ta'-lis. Button-bush. — Growing in swamps 

 and along streams. 



3. Genus MITCH-EL'-LA. — Flowers in pairs with their ovaries 

 united; calyx 4-toothed ; corolla funnel-form, 4-lobed, the lobes 

 densely bearded inside ; a smooth, trailing small evergreen herb, 

 with round-ovate and shining, petioled leaves. 



Mitch-el'-la re'-pens L. Partridge-berry. — Flowers white, tinged 

 with purple; the scarlet berries remaining over winter. 



4. Genus GA'-LI-UM. — Calyx-teeth obsolete, corolla 4(rarely o)- 

 parted, wheel-shaped; stamens 4 (rarely .i), styles 2; flowers small, 

 c^mose, stems square, leaves whorled. 



A. Leaves ahnni S in a ii'hur!. fi nit ivi/h haoked prickles. 



Ga'-li-um a-pa-ri'-ne L. Cleavers; Goose Grass.— Stem weak and re- 

 clining, bristle-prickly backward, hairy at the joints; leaves lanceo- 

 late, rough on the margins and midrib, 1-2 in. long. 



A. Leaves in \s, cninpai-ativcly /arge and firoad. moie i/r /ess distinc/ly o- 

 nerved ; JiiiH liooked-hristly. 



b. Flowers diiU-puiple to yello7i.'ish-7vhile : peduncles '?i-several-flo7verrd. 



Ga'-li-um pi-lo'-sum Ait. Hairy Cleavers. — Hairy, leaves oval, 1 in. 

 long, the lateral nerves obscure ; peduncles 2-o-forked, the flowers all 

 pedicelled. 



Ga'-li-um cir-cae'-zans Mx. Wild Licorice.- Smooth or downy; 

 leaves oval or ovate-oblong, ciliate, 1-1)4 iii. long; peduncles usually 

 once forked, the branches elongated and divergent. 



