ACERACEiE. 201 



Plate 175. 



NEGUNDO, Mcench. 



Flores dioici. Calyx minimus, 4 - 5-fidus. Petala nulla. 

 Stamina 4-5, rarius 6. Discus obsoletus. — Folia impari- 

 pinnata, 3 - 5-foliolata. Flores laterales ; masculi fasciculati 

 e gemmis aggregatis aphyllis, pedicellis capillaribus ; foeminei 

 racemosi. — Csetera Aceris. 



Negcndo, Mcench. Meth. p. 334. Nutt. Gen. 1. p. 253. DC. Prodr. 1. 



p. 596. Torr. &, Gray, Fl. N. Am. 1. p. 249. Hook. & Arn. 



Bot. Beech, t. 77. Endl. Gen. 5559. 

 NEGUNDI0M, Raf. in N. Y. Med. Repos. (hex. 2.) 5. p. 350. 

 Acer Negundo, Linn. Slichx. f. Sylv. 1. t. 46. 



Asli-Ieaved Maple. Box-EMcr. 



Flowers strictly dicBcious ; the fertile without sterile sta- 

 mens ; the sterile destitute of a vestige of a pistil. Calyx 

 very small, somewhat colored, deciduous, four - five-cleft, or 

 in the fertile flowers four - five-parted ; the lobes lightly im- 

 bricated in aestivation. Petals none. Disk obsolete or 

 none. Stamens 4 or 5, rarely 6, hypogynous, exserted long 

 before anthesis : filaments at length capillary : anthers 

 linear, fixed by the base, apiculate, innate or scarcely in- 

 trorse, two-celled, the cells opening longitudinally. Pistil 

 of two carpels united at the axis : ovary compressed contra- 

 ry to the partition, two-lobed by the early growth of the 

 wing on the back of each carpel : styles 2, filiform, united 

 only at the base, stigmatose along the whole length of the 

 inner face. Ovules two in each cell, collateral, attached by 

 nearly the whole length of the inner face to the middle of 

 the inner angle of the cell, becoming amphitropous or at 

 length anatropous, the micropyle inferior. 



Fruit a double samara, as in Acer ; the carpels oblong, 

 with a very large semi-obcordatc wing. Skeo by abortion 

 of one of the ovules solitary, oblong, anatroi)Ous, ascending, 

 11 



