156 SAPINDALES 
2. Hicoria. (Carya.) 323. 
Bud scales valvate, 4-8, falling soon after the bud opens, fruit 25-35 
mm, long, husk thin with wing-like edges. 1. H. minima. 
Bud scales imbricated, 8-12, the inner elongating when the bud opens 
and tardily deciduous, fruit 35 mm. or more long, not winged. 
Husk thick, nuts white or whitish, sweet, middle lobe of the stamin- 
ate corolla twice as long as the lateral. 
Leaflets 5, rarely 7, nut 10-20 mm. long 2. H. ovata. 
Leaflets 7-9, nut usually larger. 
Young foliage pubescent, mature leaves slightly so beneath. 
3. H. laciniosa, 
Foliage and twigs persistently tomentose-pubescent, foliage 
fragrant. 4. H. alba. 
Husk thin, nut brown, bitter, leaflets 3-7; lobes of the: staminate 
corolla about equal. 5. H. glabra. 
1. Hicoria minima (Marsh.) Britton. Bitter Nut. 
Common along streams in the southeastern part of the state. Cass 
County; Lincoln; Nebraska City; Platte River; Peru; Wabash; 
Wymore. 
2. Hicoria ovata (Mill.) Britton. Shell-bark Hickory. 
Along the Missouri in the southeastern part of the state. Nebraska 
City; Peru; Plattsmouth; Richardson County. 
3. Hicoria laciniosa (Michx.) Sarg. 
Rare in Richardson County. 
4. Hicoria alba (L.) Britton. 
Southeastern Nebraska? 
5. Hicoria glabra (Mill.) Britton. Pig-nut. 
Along streams in the southeastern part of the state. Nemaha; 
Wabash; Weeping Water. 
5. BETULACEAE, 
Bracts of the staminate aments each with a single flower, nut neither 
winged nor margined. 
Trees, pistillate flowers numerous in spike-like aments, nuts small, 
4-5 mm. long. 
Bracts flat, not enclosing the flower or fruit. 1. Carpinus. 
Bractlets tubular, becoming bladder-like and enclosing the fruit. 
2. Ostrya. 
Shrubs, pistillate flowers few, 2-4, in capitate clusters, nuts 12 mm. 
long or more. 3. Corylus. 
Bracts of the staminate aments with 3-6 flowers each, nut winged 
or margined, i. e. a samara. 
Pistillate aments solitary, apparently axillary, scales thin falling 
soon after the seeds. 4. Betula. 
Pistillate aments clustered, scales thick, becoming woody, long 
persistent. 5. Alnus. 
1. Carpinus. 326. 
1. Carpinus caroliniana Walter. Blue Beech. 
Reported from Sarpy County. 
