SAPINDACEJ':. 



concave valves ^yhicll abandon the columella and leave at liberty 

 tlie large, flattened, imbricate seeds, each containing a straight 



Maffoiiia pubescens. 



Fig. 403. Longitudinal section of seed. 



embryo with largo elliptical cotyledons (fig. 402, 403). The Mago- 

 nias are beautiful Brazilian trees with alternate compound-pinnate 

 leaves and polygamous flowers. 



V? ^SCULUS SERIES. 



^seulus,^ or horse chesnut (fig. 404-408), has hermaphrodite or 

 polygamous and ii-regular flowers. The calyx is campanulate or 

 tubular, quinquefidal, with five nearly equal or unequal lobes, im- 

 bricate in the prfefloration. The petals, five, or, more often, only 

 four in number, are unequal,- destitute of appendage, and each 

 supported by a narrow claw, flattened or with involute edges. They 

 are also imbricate in the bud. The stamens are rarely five in 

 number and alteruipetalous. More often there is also a verticel 

 formed of oppositi-petalous pieces, one, two, or three in number.* 

 The filaments are free, inserted inside a circular or incomplete disk, 



' L. Geii. n. 462.— J. Gen. 261.— Lamk. III. 

 t. 273.— Debr. Diet. iii. 712; Suppl. iii. 593.— 

 DC. Prodi: i. 597.— Spach. in Ann. Sc. Nat. 

 sér. 2, ii. 52 ; Suit, à Jliiffhii, iii. 18. — Endl. 

 Oeii. n. 5641. — Schnizl. Iconogr. t. 230. — A. 

 Gray, Oen. III. t. 176, 177.— Payee, Orgamg. 

 128, t. 28.— B. H. Gci. 398, n. 21 (part.).— 

 H. By, Payer, Fam. Kat. 318.— Lem. et Dcxe. 

 Tr. Gén. 325.— Sippocastaiiiim T. Inst. 611, 



t. 382.— Gjektn, Frtict. ii. 135, t. Ill (incl. : 

 Calothyrstis SpACH, Macrothijrsus Spach, Pavia 



BoERH.). 



= And usually of different colour, the two 

 upper being often stained inwardly and at the 

 base with ycUow or red. 



' On the situation of these oppositipetalous 

 stamens, see Payer, loo. cit. 130. 



