158 Order CELASTRALES 
1. Rhamnus. 612. 
Flowers 2 or 3 together in the axils, not umbeled. 
Petals present; calyx teeth 4; stigmas and nutlets 2. 1. R. lanceolata. 
Petals wanting, calyx teeth 5; stigmas and nutlets 3. 2. R. alnifolia. 
Flowers perfect, in axillary peduncled umbels. 3. R. caroliniana. 
1. Rhamnus lanceolata Pursh. Buckthorn. 
In moist soil in the eastern part of the state. Bellevue; Meadville; 
Nehawka; Nemaha; Weeping Water; Wymore. 
2. Rhamnus alnifolia L’Her. 
In swampy soil in the eastern part of the state. Omaha. 
3. Rhamnus caroliniana Walt. 
In the southeastern part of the state. Weeping Water; Wymore. 
2. Ceanothus. 613. 
Peduncles terminal and axillary, elongated, the axillary as long as 
the leaves; leaves 2.5-5.5 mm. wide. 1. C. americanus. 
Peduncles mostly terminal, short; leaves 7-26 mm. wide. 2. C. ovatus. 
1. Ceanothus americanus L. New Jersey Tea. 
In the southeastern part of the state. Fairbury; Lincoln; Weeping 
Water. 
2. Ceanothus ovatus Desf. Red-root. 
Common over most of the state. Cuba; Kennedy; Lincoln; Long 
Pine; Ponca; Red Cloud; Richardson county; Thedford; Valentine. 
2. VITACEAE. 
Grape Family. 
Leaves simple in ours, never palmately compound. 
Inflorescence thrysoid, the peduncle usually continuing through it 
as a main axis, petals falling away together without expand- 
ing. 1. Vitis. 
Inflorescence cymose, the peduncle repeatedly forked into several 
main branches, petals separating and expanding before falling. 
2. Ampelopsis. 
Leaves palmately compound. 3. Parthenocissus. 
1. Vitis. 613. 
Leaves densely floccose-pubescent beneath. 
Twigs terete; fruit 10 mm. in diameter; seeds 2-3, about 6 mm. 
long. 1. V. xstivalis. 
Twigs angular; fruit 6-8 mm. in diameter; seeds 1-2, about 4 mm. 
long. 2. V. cinerea. 
Leaves glabrate or slightly pubescent beneath when young. 
Leaves mostly 3—7-lobed; fruit 8-10 mm. in diameter, ripening in 
summer; seeds 2-4. 3. V. vulpina. 
Leaves sometimes slightly 3-lobed; fruit 6 mm. in diameter, ripen- 
ing after frost; seeds 1-2. 4. V. cordifolia. 
1. Vitis zstivalis Michx. Summer Grape. 
Reported from Weeping Water. 
2. Vitis cinerea Engelm. 
Along the Missouri in the southeastern part of the state. Peru. 
