44 MISC. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 



Aesculus glabra Willd. Ohio buckeye. 



Range: 22, 24, 25, 27, 29. 

 Site: Well-drained, moist, sun, shade. 

 Fruit : Capsule, available in September. 



A large, rapid-growing tree ; flowers April-May ; short-lived ; wood sometimes 

 used commercially ; flowers not showy. Young shoots poisonous to cattle and 

 if forage is poor in spring cattle will eat them ; later not attractive to livestock ; 

 hogs poisoned by the seeds. 



Several varieties have been described, a white-barked form, one with more 

 pubescent leaves, and one with more leaflets. All are of more or less local 

 occurrence within the range of the species except var. arguta (Buckl.) Robin- 

 son, (A. arguta, Buckl.), the shrubby buckeye, found also in region 30. 



Aesculus humilis, see Aesculus neglecta. 

 Aesculus michauxii, see Aesculus neglecta. 



Aesculus neglecta Lindl. 

 Range: 28. 



Site: Well-drained, sun. 

 Fruit: Capsule, available in September. 

 A large, very rare tree; flowers April-May. 



Var. georglana Sarg. (A. georgiana Sarg.) Georgia buckeye; usually 

 shrubby ; occurs in regions 28, 29, and 30. 



Var. tomentosa Sarg. (A. michauxii Hort, not Spach, A. humilis Hort., not 

 Lindl., A. rubra carnea superba Hort., and A. rubra carnea pubescens Hort.) in 

 region 28 has very showy flowers. 



Aesculus octandra Marsh. Yellow buckeye. 



A. flava Ait. 



Range : 20, 22, 23, 24, 25, 27, 28, 29. 

 Site: Dry, well-drained, sun. 

 Fruit : Capsule, available in September. 



A large 'shrub to small or large tree ; root system shallow ; rapid growing, 

 short-lived ; wood used commercially ; subject to dry rot and stem borers ; 

 blooms April-May ; a red-flowered form is known. 



Aesculus parviflora Walt. Bottlebrush buckeye. 



Range: 29, 30. 



Site: Well-drained, shade. 



Fruit: Capsule, available in October. 



A large spreading shrub, very showy during the July flowering period ; com- 

 monly occurs on rich soil. 



Aesculus pavia L. Red buckeye. 



Range: 20, 25, 27, 28, 29, 30. 



Site: Moist, shade. 



Fruit: Capsule, available in September. 



A large shrub to small or rarely large tree ; ordinarily occurs on slightly acid 

 soil ; flowers April-May ; very handsome in cultivation ; a form with dark-red 

 flowers is known. Poisonous to livestock. 



Aesculus rubra vars., see Aesculus neglecta. 



Ailanthus altissima (Mill.) Swingle. Ailanthus. 



A. glandulosa Desf. 



Range : 1, 2, 3, 5, 6, 8, 11, 17, 20, 22, 24, 25, 27, 28, 29. 

 Site: Dry, well-drained, moist, sun. 

 Fruit : Samara ; ripe in September, long persistent. 



A large tree introduced from China but aggressively spontaneous and well- 

 established in the range indicated ; easily storm-damaged ; rapid growing ; cop- 

 pices freely ; immune to the effects of smoke, dust, or insect pests ; 14,000-22,000 

 seeds per pound, germination 60 percent, about 3,000 usable plants per pound 

 of seed ; withstands considerable abuse in handling ; staminate plant odoriferous 

 in flower. This species produces wood even on poor soil more than twice as 

 fast as any native tree having wood of anything like the same fuel value ; wood 

 ranked with that of black walnut or oak for fuel, excellent for cabinetrnaking. 

 Observations: Pine grosbeak, crossbill; white-tailed deer, 



Ailanthus glandulosa, see Ailanthus altissima. 



