Acer.] SAPINDACEJE. 89 



2- rarely 3-4-lobed and -celled ; styles 2, filiform, stigmatose on the inner 

 surface ; ovules 2 in each cell, attached by a broad base, superposed or 

 collateral. Fruit of 2, rarely 3 or 4 spreading samaras. Seed ascending, 

 compressed, testa membranous, inner coat fleshy ; cotyledons plaited, 

 radicle long. — Distrib. Europe, N. Asia, N. America, Java, the Hima- 

 laya, and Japan ; genera 3 ; species 50. — Affinities. Allied to Celas- 

 trinecc. — The Tribe Aceri'ncce differs from the others of this great tropical 

 Order chiefly in the opposite leaves, and stamens inserted on (not within) 

 the disk. — Properties. Several American maples yield sugar. 



l. A'CER, X. Maple. 



Leaves simple, entire or lobed. Disk annular. — Distrib. of the Tribe. 

 — Etym. The Latin name. 



A. campes'tre, L. ; leaves reniform obtuseby 5"-lobed entire lobulate 

 or crenate, corymbs erect, wings of fruit horizontal. Common or Small- 

 leaved Maple. 



Thickets and hedgerows, from Durham southd. ; naturalized in Scotland; 

 Ireland ; Channel Islands ; fl. May-June. — Small tree 10-20 ft., with 

 spreading branches; bark rough, fissured; wood beautiful, fine-grained. 

 Leaves 2-4 in. diam., pubescent when young; petiole 1-1| in., slender. 

 Corymbs 1-2 in. Flowers J in. diam., green, shortly pedicelled. Sepals 

 linear-oblong. Petals similar, but narrower ; wings of fruit linear-oblong, 

 slightly curved, each § in. long. — Distrib. Europe, from Denmark southd., 

 N. aud W. Asia. 



A. Pseudoplat'anus, L. ; leaves 5-angled, 5-lobed, lobes crenate-serrate, 

 racemes elongate pendulous, wings of fruit divergent. Great Maple, 

 Sycamore, Plane of Scotland. 



Plantations, &c. ; fl. May-June. — An umbrageous tree, 40-60 ft. Park smooth, 

 outer layer deciduous. Leaves 4-8 in. diam., glaucous beneath, lobes acute 

 or acuminate. Flowers as in A. campestre, but pedicels shorter, and stamens 

 longer. Ovary villous. Samaras 1^ in , scimitar shaped. — Distrib. Mid. 

 Europe and "W. Asia. — Sap sugary. Wood much used for turnery, &c. 



Order XXV. LEGUMiNO'Sffl. 

 Sub-order Papiliona'ce^e. 



Herbs, rarely shrubs. Leaves alternate, 3- or more-foliolate, rarely simple ; 

 stipules usually present ; leaflets often stipellate. Lnflorescence various. 

 Flowers irregular, proterandrous. Calyx of 5 connate sepalg, often 2-lipped, 

 Petals 5, very unequal, distinct or 2 or more adherent by their claws to the 

 staminal tube, imbricate in bud ; upper [standard) broad, often reflexed, ex- 

 teiior in bud ; 2 lateral (wings) parallel, enclosing and sometimes adhering 

 to the 2 lower (keel), which are interior in bud, and distinct, or connate by 

 their lower edges. Stamens 10, perigynous, filaments united into a sheath, 



