658 HlPPOCASTANACEAE Aesculus 



164. HlPPOCASTANACEAE T. & G. Horse-chestnut Family 



4721. AESCULUS L. 



Anthers protruding from the flowers; fruit warty. 



Flowers white, blotched with red, yellow, or purple ; introduced 



1. A. Hippocastanum. 



Flowers yellow or greenish yellow; native 2. A. glabra. 



Anthers included in the flowers; fruit smooth 3. A. octandra. 



1. Aesculus HippocAstanum L. Horse-chestnut. Reported in Coul- 

 ter's Catalogue as escaping from cultivation. Also reported by Andrews 

 for Monroe County without data. It is reported as sparingly escaped in 

 Michigan and Schaff ner, in his Catalogue of Ohio Plants, says : "No speci- 

 mens." 



Introduced from Asia through Eu. 



2. Aesculus glabra Willd. Ohio Buckeye. Map 1369. Usually a fre- 

 quent tree in all parts of Indiana although it appears to be absent from a 

 few of the northwestern counties. Because it is poisonous to stock, land 

 owners from the earliest times have tried to exterminate it. It is usually 

 associated with beech, sugar maple, and American linden. 



The pubescence on the under surface of the leaflets is quite variable as to 

 abundance and duration. Trees with the leaflets permanently pubescent 

 beneath are known as Aesculus glabra f. pallida (Willd.) Fern. 



West of the Allegheny Mts. from Pa. to Iowa, southw. to Ala. and Okla. 



3. Aesculus octandra Marsh. YELLOW BUCKEYE. Map 1370. Infrequent 

 on wooded slopes near the Ohio River from Dearborn to Crawford Coun- 

 ties. Phinney's report for Delaware and Jay Counties was an error. 



The flowers vary in color from deep yellow to purple or reddish purple. 

 This variation, added to the fact that the species begins flowering when it 

 is shrublike and ultimately grows to be a very large forest tree, has led 

 authors to describe several species and forms. A purple flowered form 

 was reported by Young 1 for Jefferson County under the name of Aesculus 

 flava var. purpurascens. This color form is now known as Aesculus octan- 

 dra f. virginica (Sarg.) Fern. (Rhodora 39: 318. 1937.) 



Pa. to Iowa, southw. to Ga., Okla., and Tex. 



165. SAPINDACEAE R. Br. Soapberry Family 



Herbaceous plants. (See excluded species no. 432, p. 1072) 



4726. Cardiospermum, p. 658. 



Woody plants 4824. Koelretjteria, p. 658. 



4726. CARDIOSPERMUM L. 



See excluded species no. 432, p. 1072. 



4824. KOELREUTERIA Laxm. 



1. KOELREUTERIA PANICULATA Laxm. GOLDENRAIN-TREE. Escaped 



from cultivation in New Harmony, in Posey County. 



'Botany of Jefferson County. Indiana Geol. Surv. Rept. 2: 255. 1871. 



